Planet 9

**K-Man S** · #1 07-28-2007, 08:54 AM

For those who have waited a long time for it, here is the raw dyno chart for the Capristo Exhaust run at Imagine Auto on the Mustang 4 dyno producing 311 hp. As a point of note the dyno operator Karl usually doesn't start recording until about 2000 rpm because results below that threshold aren't that important or that reliable depending on a lot of factors, and it gives an even comparison to other dyno runs that he does the same way, ruling out how fast his foot went to the floor etc.

Dyno Chart Here:

Full size scanned image here:
http://www.planet-9.com/gallery/sh...569&original=1

For comparison purposes here is the Milltek Header + AWE Catback exhaust dyno chart from the same dyno, although this chart has been smoothed I believe.

douzzer · #2 07-28-2007, 01:51 PM

Soundsthe best and works the best. The run was valves open right? I'd like to see the valves closed chart side by side.

The above chart was desnork+V-Flo+GIAC+Capristo on 93 octane right?

**titanic** · #3 07-28-2007, 05:52 PM

Can't see the second chart clearly, can you please provide the full-size scan?

**K-Man S** · #4 07-28-2007, 06:09 PM

Originally Posted by douzzer

Soundsthe best and works the best. The run was valves open right? I'd like to see the valves closed chart side by side.

The above chart was desnork+V-Flo+GIAC+Capristo on 93 octane right?

The Capristo chart is de-snork + V-Flo + GIAC + Capristo (valves opening after 3000 rpm) and 92 octane, we don't have 93 around here.

**K-Man S** · #5 07-28-2007, 06:15 PM

Originally Posted by titanic

Can't see the second chart clearly, can you please provide the full-size scan?

Not sure where the original piece of paper is but I found a larger image size that you should be able to make out, note that the scaling on the sides of the graph is different between the two due to different ranges. Also the AWE one has one of my non-modified dyno pulls even though it says that it is Charles's car it isn't the file was mislabelled in the system because we ran back to back in October at Croctoberfest dyno time.

From what I can tell both are pretty similar, which is what I would expect from a modified exhaust system but the Capristo looks like it has a little more here and there throughout the graph and of course a higher total number (311 vs 304)

douzzer · #6 07-28-2007, 06:35 PM

I think you might have already told us, but: does the Capristo remote control allow you to lock the valves closed? There are street scenarios where that's preferable, and tracks where that's mandatory because of noise restrictions.

Soooo, I think when you get the underdrive pulley and IPD plenum on there, you'll be brushing up against 3.8+x51 power (381FWHP). And your torque curve is great -- wide, smooth, and predictable. This is a real accomplishment. I think you're going to need some custom ECU parameters to get the most out of the strap-ons, and I'll bet you'll get to 381hp if you go to that trouble. You're about ready to start aero tuning in earnest methinks. As it is I think your car is good for under eight minutes on the Nurburgring, in the right hands. Tweak the brakes (recirculators or PCCB) and add some downforce and I'd bet it would better 7:45 with Rohrl at the wheel (Rohrl drove an OEM 997 GT3 RS around in that time, and a Carrera GT in 7:28, as listed here).

**K-Man S** · #7 07-28-2007, 09:10 PM

I wonder if Walter is paying to airlift my car over there?

I don't know if you can lock the valves closed or not, when I manually open them for a demo I then manually close them and when I drive I can re-open them in auto mode. This is a question for Capristo. My hunch is that you could simply plug one of the vacuum lines or something when you take it to the track to keep the valves closed or bypass the black box or whatever since in default mode the valves are closed it is something in the black box that opens them so taking that out of the equation should give you a way to keep them closed for say a certain track, then re-engage when finished.

douzzer · #8 07-28-2007, 10:23 PM

Originally Posted by K-Man S

I wonder if Walter is paying to airlift my car over there?

In fact, you can probably make some money by blackmailing Porsche to stop you from shipping your car to the 'ring

.

I don't know if you can lock the valves closed or not, when I manually open them for a demo I then manually close them and when I drive I can re-open them in auto mode. This is a question for Capristo.

I can't imagine they haven't thought of this. What are the buttons on the remote? Have you told us this already?

bypass the black box

Ah ha, now that gives me an idea. If the box can be prevented from knowing the current RPMs, then it will keep the valves closed. How is it getting the RPM info?

**K-Man S** · #9 07-28-2007, 10:27 PM

keyfob has A button to open valves, B button to close valves, and yes this was already mentioned before.

I think RPM is a function of vacuum after they programmed the black box at Capristo, it only ties into the electric system and vacuum, but I was told by Capristo that the black box can be programmed to open and close in various rpm ranges by Capristo.

stever13 · #10 09-26-2007, 11:25 PM

Anyone have a good and reliable recommendation to do mod work on my CS in the San Francisco bay area (i.e. maybe K-mans' configuration with Capistro, etc)?

**K-Man S** · #11 09-27-2007, 06:46 AM

Check our sponsors page, there are sponsors in your area, Sharkwerks being one of them.

arcnphat · #12 09-27-2007, 11:48 AM

Carpisto exhaust, GIAC Flash, IPD Plenum

**K-Man S** · #13 09-27-2007, 11:55 AM

Originally Posted by arcnphat

Carpisto exhaust, GIAC Flash, IPD Plenum

I would expect your results to be unique but off hand something like

Capristo - 20-25hp gain
GIAC - 5-10 hp gain
IPD - unknown since I haven't dyno'd yet and won't until 10/4/07

Also you cannot necessarily just add gain numbers together, the ONLY way to know is to dyno YOUR car before and after your mods and see what you get to be sure.

arcnphat · #14 09-27-2007, 12:10 PM

Just wanted to say thanks for all the knowledge you share with us. Not sure if you got my pm about my stereo install disaster. Hopefully I have my toy back soon. New harness had to be installed. I have my capristo on it way from Nick Forza. He was such a gentlemen to deal with even though he is a true Ferrari man. I keep you posted on the install, detailing dynamics in mineola, ny is doing the install. Lastly, youtube can't really do justice to a true sound of the car. It must sound amazing in person.

**K-Man S** · #15 09-27-2007, 01:05 PM

YouTube doesn't do justice, in fact just yesterday I noticed how my idle has deepend in tone as the exhaust has broken in, something I think everyone will like. My license plate is Blitzkreig abbreviated and I have to tell you with the valves open the sound is reminiscient of a German Me109 in a full dive.

arcnphat · #16 09-28-2007, 01:18 PM

Love the Plate, looking like about 10 days until I get the car back and then a small trip to detailing dynamics for the install of the capristo. So looking forward to it after my disaster. Good luck on the body kit install. Pardon my french but from the looks of it, damm.

**K-Man S** · #17 10-13-2007, 01:55 PM

Just a quick note I compared my dyno run of this past week where we ran with the exhaust valves open from the beginning vs. the one posted earlier in this thread where the valves were in auto mode and it appears that I have more low-end torque when the valves are closed in auto mode but horsepower is pretty much the same. Nothing drastic, maybe 10-15 ft/lbs, but at least noticeable on the chart at the point when it comes on and at what level. Just wanted to post this as an FYI to those who might want to leave their valves open all the time you are losing torque on the low end by doing so...

mojozone · #18 10-13-2007, 08:11 PM

Ken,
Are you still without resonance with your system? And thanks for all the info.
Mike

**K-Man S** · #19 10-13-2007, 08:35 PM

Nope no resonance whatsoever, whether I set the valves to open at 3K or 4.2K the car is very similar to stock in terms of volume, simply a different tone but no resonance or no drone or whatever you want to call it that most systems suffer from to some degree between 2200 and 3000 rpm, Tubi probably being the worst that I've heard in person when under load in that rpm range. The only issue I've had was that they needed to send me one of those vacuum tanks to install because sometimes I wouldn't have enough instant vacuum on hand to fully open the valves, hence the need for the resevoir tank. Once that was installed I was golden.