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Old 06-22-2009, 06:50 PM
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SRP just installed - first impressions

This thread's title is a bit of a tease - I can report on how the DIY install went into my '06 CS; driving impressions come tomorrow !

I ordered the combination of the SRP and a borla exhaust from Dan at Vivid Racing who has done a great job helping the pieces come together. I ordered both on June 5th; I received the SRP today, June 22.

The borla is "in process" ... no word from borla about when that process ends but they are making a batch of 5; at the time of my order 4 were for already-placed orders and it is claimed that I get #5.

mechanical install:

If you do this yourself review Softronic's PDF and the excellent writeup in the articles section.

I took about 2-1/2 hours to do the install and my work practices are really bad. your mileage, as ever, may vary.

Installing the pieces isn't terribly hard, but I lost some skin from my knuckles. The removal of the distribution pipe (plenum) + throttle body is cumbersome. Even with sliding the large rubber couplers left and right (to the outside) it was a struggle.

installing the new SRP was worse; I cleaned the couplers and used dry silicone spray lubricant on all surfaces and then tightened the outer clamps on the air intake manifolds, leaving the inner clamps (on the distrib. pipe) very loose.

Doing so allowed me to get the SRP placed; using the silicone allowed me to rotate the SPR as needed to finish the smaller hoses underneath.

4 points:

1) I clipped about 1/2" from the smaller side of the breather tube so it would kink less;

2) The larger end of the breather tube which attaches to the vapor-oil separator (VOS) is a very tight fit but is do-able. get medieval on the end of the tube but don't exert a lot of force on the VOS - it's plastic.

I lubed it w/ dry silicone and stretched the end of the tube w/ needle-nose pliers quite a bit.

3) The smaller of the 2 lines attaching to the SRP is a very loose fit and I'm not convinced the stock spring-loaded clamp is enough to seal it. on my '06 that end of the line had stretched a bit so I cut 1" off and that helped. next time I remove the engine covering I'll install a proper adjustable clamp.

4) and lastly, the PDF which shows the bare-bones install instructions mentions removing the small vacuum line from the stock plenum flap vacuum actuator -- but doesn't mention plugging that line. I stuffed it w/ a tightly-fitting spare bolt. Others may want a cleaner solution but this works.

The package *does* come w/ a small 3/16" (or so) plastic sphere -- presumably to plug that vacuum line. I didn't find it until well-after the dust had settled and I was done.

Reflash:

The box from Softronic arrived at about 1:00 today; by 2:00 (Mountain time) I had sent them my flash, and they replied at 5:30pm. Very nice turnaround!

The reprogram is stressful -- mainly because my laptop keeps disabling the wireless connection and I didn't know when (during reprogram) the softronics package needed to talk to the mother ship.

I powered my Cayman w/ jumper cables to a car idling next to it; I powered the laptop w/ AC as directed. All went well.

Note to Scott -- maybe have that incrementing packet counter update every 100 or so ... I wonder how much that rapid counter display update was taking away from the actual program !

As I said, tomorrow I need to take a little 400mi trip so I'll be able to give impressions on the SRP. I wish there was a way to know the reprogram 'took' -- presumably because it restarted after programming !

I won't be posting any Dynos ... the dyno / no dyno / with / without -exhaust / works / doesn't (...) has been talked to smithereens. I'll be reporting seat-of-pants only. I was confident in the already-posted results to buy everything sight-unseen.

-PM.

Last edited by Plainsman; 06-22-2009 at 07:04 PM.
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Old 06-22-2009, 07:33 PM
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Re: SRP just installed - first impressions

Read through the reviews in the install article. Some helpful pointers in there. Smaller hose clamp for one and instead of plugging the end of the vacuum line to the old plenum valve just remove it and put a vacuum cap on the solenoid valve mounted on the RH intake manifold. Makes it all come out a bit cleaner.

The small plastic sphere must be a new addition. Wasn't included previously.
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Old 06-23-2009, 09:42 AM
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Re: SRP just installed - first impressions

Originally Posted by Plainsman View Post
The package *does* come w/ a small 3/16" (or so) plastic sphere -- presumably to plug that vacuum line. I didn't find it until well-after the dust had settled and I was done.
I pulled the hose and capped off the solenoid with a vacuum cap but I always wondered what that was for.
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Old 06-23-2009, 02:43 PM
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Re: SRP just installed - first impressions

Originally Posted by GorresKime View Post
I pulled the hose and capped off the solenoid with a vacuum cap but I always wondered what that was for.
is capping off the solenoid necessary? i just pulled the hose and didn't have a cap so i left it open.... plus it's kind of hard to get to under the manifold...
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Old 06-23-2009, 02:51 PM
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Re: SRP just installed - first impressions

I am pretty sure it needs to be capped.

From SRP installation article comments:
Originally Posted by BillC
The solenoid is located on the right intake manifold, in between the runners for the front and middle cylinders. It's basically clipped to a plastic bridge between the runners. Lightly pry the hook on the bottom of the clip out from the bridge with the tip of your finger, and then the solenoid will slide right up. Then, it's pretty simple to pull the hose from the solenoid, install a vacuum cap (I used 5/32", and it fit nicely) and then just slide the solenoid back into place. Very quick and easy, and no cutting required.
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Old 06-23-2009, 07:44 PM
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Re: SRP just installed - first impressions

If you don't cap it you'll have a vacuum leak anytime the ECU commands the flappers open in the plenums. It's actually not that hard to get to. If you look at it closely you'll find that the solenoid clips over a plastic rib that runs between two intake runners. IIRC it will lift straight up. Just cap and slip it back on.
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Old 06-23-2009, 08:17 PM
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SRP just installed - first impressions, Driving impressions.

yes, plug that smallest vacuum line, however you like. I think my original post mentioned that.

Driving impressions

400+ miles, mostly interstate and some stop/go. The car is stronger at all useful RPMs; The throttle response is quicker and PSM doesn't assert itself as fast.

The car is a champ when winding it out - using all of the power band. And I found myself wanting more -- I trust the borla will allow the SRP to reach its full potential; waiting, waiting ...

All in all, very satisfied.

On the final stretch of interstate I set the cruise on 80 and reset the trip computer. In spite of one 3'rd gear blast past a wandering semi, I averaged 26.0 mpg.

If I could keep my foot off the gas for any length of time I'd get this kind of economy all the time. as if ...

mmmv,

-PM.

Last edited by Plainsman; 06-23-2009 at 09:48 PM.
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Old 06-27-2009, 06:20 PM
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Re: SRP just installed - first impressions

Just curious, what made you choose softronic over EVOMS? I am looking at both and not sure which way to lean.
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Old 06-27-2009, 11:07 PM
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Re: SRP just installed - first impressions

Just curious, what made you choose softronic over EVOMS? I am looking at both and not sure which way to lean.
In no particular order -

1) Scott's credentials and participation in the Porsche community - among other things, verifying stock firmware in cars @ some PCA races,

2) my having the capability to reflash my car back to stock w/o the intervention of a dealer / tuner, & free firmware updates as new developments occur,

3) the background to the softronic race plenum (SRP) development:
SRP backstory

4) a great summary, w/ dyno chart. I wanted modifications which would address the torque valley [chasm] from 3K to 4K rpm:
SRP description, dyno.

5) the dynos of the SRP+exhaust which are prevalent here give me a very good feel for what I'm buying; while that 40+ HP is nice at the top of the RPM range, it's the significant torque gains below that which grabbed my attention. I am confident that if I install the SRP and a borla I'll be quite happy.

6) Excellence Magazine's guarded mention in the April 2009 article comparing a CS w/ 2 modified 911s - summarizing one author's impressions of the RS350 package:

"... its EVOMSit reprogramming feels like a factory job in refinement terms and, with it, the RS350 kit creates a 3.4 which relishes repeated trips to the redline. While we can't say we feel an extra 40 - 50 horses, the RS350 does feel stronger than a stock S."

Given that they were talking about some of the magazine's sponsors, this seemed like an obligatory, but reserved, endorsement.

ymmv,

-PM.
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Old 06-28-2009, 03:52 AM
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Re: SRP just installed - first impressions, Driving impressions.

i've got the SRP on for a few days now. my question is: did the SRP cahnge something to make my engine buzz from about 5000rpm up? it sounds like some sort of vario cam change that activates and deactivates at the 5K mark that i never heard before(it's noticeably louder) i did also have the HIP Clear engine cover installed at the same time so i am not sure if it's louder because of this. i guess i could always flash back to stock to come to a conclusion. mabye existing srp customers can give some insight?

tks
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Old 06-28-2009, 05:02 AM
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Re: SRP just installed - first impressions, Driving impressions.

With the HIP engine cover, you will definitely get some additional noises coming from the engine compartment. Personally, I would change back to the stock cover and see if that makes a difference before reflashing.

Good luck!
-Moto


Originally Posted by 06cs View Post
i've got the SRP on for a few days now. my question is: did the SRP cahnge something to make my engine buzz from about 5000rpm up? it sounds like some sort of vario cam change that activates and deactivates at the 5K mark that i never heard before(it's noticeably louder) i did also have the HIP Clear engine cover installed at the same time so i am not sure if it's louder because of this. i guess i could always flash back to stock to come to a conclusion. mabye existing srp customers can give some insight?

tks

Last edited by MotoFanatic; 06-28-2009 at 05:04 AM.
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Old 06-28-2009, 07:49 AM
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Re: SRP just installed - first impressions, Driving impressions.

I notice that extra engine note; I think it's the vario-cam and noticed it before the SRP install.
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Old 06-28-2009, 09:57 AM
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Plainsman

Sounds like you did your homework before making this decision

I also have The SRP and Flash from softronic and your determining factors to choose Softronic was very similar to mine. I wanted to update my impressions after 1 month as well .

I have now relized there is more to tuning a car then just adding HP
My car has a whole new personality .When I am cruzing on the FWY in 5th it is running real smooth and the motor seems to be working less or easier then before,my fuel consumption has Improved as well.

When I want to get on it the car responds like its KNOWS what iam thinking ? Weird .Is the car is actually Smarter then before ? YES .Its communicating better and by doing this my driving experience is more pleasurable. The Car reacts in a way more connected to my driving and the tourque is aggressive when I want it to be 4kRPM to Redline is much quicker then Stock.

So in a Nutshell -My car is Smarter and feels better all around -The HP is secondary to me at this point even though I have a 2.7 liter it is just a more enjoyable car to drive Softronic
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Last edited by prodgers; 06-28-2009 at 01:35 PM.
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Old 07-02-2009, 08:27 PM
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Re: SRP just installed - first impressions

I would like to thank you for the first impressions posted and info on why you chose Softronic. Granted you could have used another product yet you decided on Softronic. This make me feel very humble in such a large Internet market .

THANK YOU!

Scott Slauson
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Old 07-10-2009, 09:23 AM
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Borla just installed - first impressions

I ordered my borla w/ 3.5" tips on June 5th from Vivid Racing. Shipped from Borla on 6/30 it arrived, via FedEx ground on July 8th. The price paid was $1500 including shipping.

No issues w/ the packaging - it arrived in one piece. With the July 4th weekend approaching, I'd hoped for a call from borla or Vivid *before* it was sent to confirm shipping -- I wanted to switch to 2-day [and pay for that delivery service] so I could install it over that weekend.

That level of involvement / service was beyond all concerned - Borla ships fedex ground, fedex ground is separate from their express services and the two don't talk, and Vivid took my payment and wrote a P.O. to borla. Everyone Did Their Job.

The long lead time at borla is more understandable and probably due to limited demand -- they make their $$ selling exhausts for mustangs, tundras, and suburbans ... our caymans are a small niche.

Borla sales told me on June 5th that a run of 5 was "in process" and 4 were spoken for. Unless you're lucky enough to find a stocking dealer, plan on a month delay. The build date on the shipping carton was "5/30".

[ I'd gripe some more about commerce in the internet age, except that I get far more options from amazon dot com -- even when I spend maybe 2% of that Vivid order ... ]

All in all, I did receive the exhaust.

Installation:

First a very BIG THANKS to Gator Bite for his articles on removing the stock exhaust and installing the Borla. I wouldn't have attempted this job w/o them. many thanks!

The install was rather special, in part because I too broke a couple of exhaust studs. More on that later.

I supported the car on jack stands, and removed the rear wheels. I also removed a small plastic piece of trim from the wheel wells to get better access to the exhaust flanges.

The issue of the exhaust studs deserves special mention -- I applied several rounds of penetrating oil over a 2 hour period. I then automatically reached for my 13mm sockets and found those to be too large for some of the studs.

My CS is an early '06 -- an East Coast US car from a state which probably uses a lot of road salt in the winter ... either some of the nuts on the exhaust flange rusted down to 1/2", 12mm and 11mm, or, there was some significant variance in the nuts used @ Porsche. My CS' nuts were quite rusted.

At various times I was reaching for those size sockets, in 6pt and 12pt styles.

Rather than struggle with a short ratchet -- and apply some stud-snapping force in a bad direction, I found a longer breaker bar worked better. less side-side motion.

I learned this after snapping 2 studs on the driver's side. I made several attempts to create a stud press but had to resort to dremelling+drilling to remove most of the meat of the stud, down to the flange, at which point I drove them out w/ a hammer and punch. Perhaps these studs were spot-welded in - I found mention of this in other threads.

I replaced those 2 studs w/ 8mm stainless bolts, nuts and lockwashers.

when installing the borla, the other 4 studs received new stainless nuts and lockwashers. All were treated w/ high-temp anti-seize.

"Other than that, Mrs. Lincoln, how did you like the play?"

Other than that, the removal of the stock exhaust was straightforward. The worst part of the removal was drilling out the 2 studs, kneeling on the garage floor ... pushing hard and watching drill bits turn red. Sadly I'm not so young any more.

Again, big thanks to Gator Bite -- it was especially helpful to be pointed to the 4 13mm bolts attaching the rear support cradle to the car -- *those* 4 and not the plethora of bolts used on the whole cradle.

-------------------------------

Borla install:

This too was straightforward, in spite of doing it myself. The suggestion of using a ratchet-strap was genius and really helped hold things together.

I put a moving blanket down under the car in case the exhaust dropped, got under the car, head pointed to the front, dragging the exhaust in behind me w/ my feet.

[OK, it would have been much easier w/ 2 people. My wife was at work ...]

I worked in stages side-to-side, arranging the borla nearer to its mounting points, and then I seated the borla's flanges on the exhaust studs, just enough to get 1 nut on each side. At one point I had to disconnect the right side assembly from left+tip to be able to position it.

Penetrating oil on the tip assembly help keep things loose enough to shift.

I then worked to get the 3 pieces of the assembly pressed together enough so that the distance between the rear mounting paddles was the same as the mounting bolt holes on the transmission. The ratchet strap was really helpful there.

When I succeeded getting it close in the rear, I attached 1 mounting bolt each side, and then started to muscle / press / pound / strap the exhaust onto all he exhaust studs. I then attached new nuts, finger-tight.

I repeated the process at the rear, installing lower and upper isolators and bolts, finger tight.

I then made a stab at getting the tip centered. When that was close, I tightened all the mounting hardware except the tip assembly clamps.

Lastly, I tapped on the tip assembly w/ hammer and block of wood to center the exhaust and then I tightened up the clamps.

Job done.

Last edited by Plainsman; 07-10-2009 at 10:05 AM.
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Old 07-10-2009, 09:38 AM
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Borla + SRP driving impressions

Yow.

I now have a CS which pulls stunningly to redline - and it is really strong.

Winding out 2'nd and 3'rd is amazing -- this car still wants to be run above 4K rpm but there is more torque lower down in the power band. Above 4K it simply flies.

Yesterday's drive was limited to 100 miles of interstate, w/ a few speed moments when no one was there to be righteously offended. And on-ramps.

Until I get the feel of this some more I won't be able to give more than these bare impressions.

All in all I'm very satisfied.

Yes, the drone is still there from 2K to 2.7K rpm when under throttle. I'm learning to drive around it. I'm also considering just how the stock exhaust mitigates it. The 'drone' seems to be at the car body resonant frequency.

Anyone got any more info on that? -- I'll search for 'drone' here, and see just what may be done to mitigate it. For me, this is less of an irritation than a design puzzle to be solved.

The overall sound of the exhaust, at all points in the powerband, is truly awesome! power and sound !

I *really* can't wait to get this thing on a track !

-PM.
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Old 07-10-2009, 10:22 AM
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Re: SRP just installed - first impressions

Have been looking at Borla as well. What is the difference between the exhausts and the size of tips? Are they different other than that? I think Borla calls one race and one eduro or something like that.
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Old 07-10-2009, 11:43 AM
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Re: SRP just installed - first impressions

Originally Posted by Gator Skin View Post
Have been looking at Borla as well. What is the difference between the exhausts and the size of tips? Are they different other than that? I think Borla calls one race and one eduro or something like that.
the only difference is the tip diameter ... I went w/ 3.5" instead of 4". an appearance thing only.
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Old 07-10-2009, 12:38 PM
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Re: SRP just installed - first impressions

I've got Borla on mine as well and definitely agree with your impressions. Doing the SRP tomorrow and can't wait to complete the package! .

As for drone I really don't know what it is that increases the volume, but I noticed it from day one with OEM exhaust, just lug the engine a bit and note the difference in sound. Borla is most definitely louder, but my regular driving habits didn't have me spending much time in that power band anyways.
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Old 07-10-2009, 02:57 PM
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Using drone to your advantage

The Drone has a usefull Purpose
if you ever do not want to listen to the person in the passenger seat ,purposely lug the car to a heavy drone

If someone from work that you do not care for wants a ride home from time to time DRONE IT BABY .. all the way home
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