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Discussion Starter · #21 ·
Realistically with over 11:1 compression, **** gas and a less than optimum rotating assembly pushing for a lot more power than the TPC kit delivers in a 987 is a recipe for disaster.

Can you roll your own and do better on power and price? The components aren't hugely expensive but programming and dyno time are. And if you want big numbers new rods and pistons are necessary.
if it's a 987.1 that's port fuel injected without bigger injectors and upgraded fuel pumps, I would totally agree. If it's a 987.2 and is direct injection, I would disagree. DI is much better for fuel atomization and designed to be capable of running leaner afr's at higher power levels. It's what makes all the upcoming turbocharged factory engines from all the different manufacturers sable to keep power levels up while reducing emissions. Plus, it all depends on the strength of the factory bottom end components.

As for dyno tuning...do you plan on driving your car on the dyno or the street? Dyno tuning is really only good for max power runs.

The 10 psi of boost is the peak boost, not sustained boost. My boost/vac gauge is in bars. Peak boost is about 0.7 bars (about 10.3 psi)...perhaps the waste gate prevents higher boost. However, the amount of boost in *normal* or usual driving is usually about 0.3 bars (about 4.4 psi). I seldom push it to get 0.7 bars. In the 3-1/2 years I've had the set up, I've not experienced any problems...of course I'm keeping my fingers crossed.
are you using a boost controller? If not, you probably are just running off wastegate spring pressure, in which case you wouldn't build boost past that point. Either way, you'd be perfectly fine. As far as how long the car will last at your power levels, you'd really have to know what the bottom end is made of and be running egt sensors and monitoring your afr's and timing to see if the ecu starts pulling timing on you as egt's go up. Something like that would actually be good to do on a dyno, but imo your final tune should be done on the street/a roadcourse for proper drivability.
 

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Discussion Starter · #22 ·
Is the TPC kit "state of the art"? No. Does it work quite well? Yes it does. Realistically with over 11:1 compression, [email protected] gas and a less than optimum rotating assembly pushing for a lot more power than the TPC kit delivers in a 987 is a recipe for disaster.

Can you roll your own and do better on power and price? The components aren't hugely expensive but programming and dyno time are. And if you want big numbers new rods and pistons are necessary.

I had the TPC kit on my car and it delivered exactly as promised. I have a custom set up on my car now that delivers 200 more hp than the TPC setup but the cost was in an entirely different league
would you mind posting a pic of the kit you're running now, even if complettely custom built? Good turbo porn is always fun to look at :)
 

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Cayman The Destroyer!
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Factory engines running DFI & turbos are not running anywhere near the nominal 11:75 that the NA Porsche DFI engines are running. (IE the 991 DFI Turbo S runs a 9.8:1 CR) And I say nominal because if the 987 engines are any indication CR can vary quite a bit plus or minus on the stock engines. There's not a lot of margin for error with detonation on these engines.

I say dyno time because when you are the first of a kind most programmers tune the car on the dyno and then do fine tuning on the street. All indication is that the DME on the DFI cars is royal bit*h to work with.

No disrespect intended but over the years many peeps have come on this site proclaiming that TPC and others doing turbo's on Caymans are doing it all wrong. Could it be done better? Sure. Would I have like to have compressor maps etc to work with? Of course! But calling it intellectual property is fine with me. So far none of the nay sayers have come up with more than talk. It's easy to talk the talk and bash available products and evidently much harder to come up with a better product.

I spent a lot of time working with some very smart and experienced people at Vision and EVOM's on my gen one turbo engine. It took a fair amount of R&D to optimize power, reliability and drivability even though the engine and DME are pretty well known. I'm sure cracking the new DME will be much harder.

I'm looking forward to seeing your creative and cost effective turbo solution for the DFI engine. Perhaps you can make a lot of money selling it to others or better yet publish all the spec's and open source the code so we can benefit from all your hard work without compensating you. :cheers:
 
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Discussion Starter · #24 ·
hey, I'm right there with you. In my line of work, I'm no stranger to the value of IP. I do, however, feel the tuners would make more if they functioned more like COBB and provided a user adjustable platform for a fee with standard map options and then also provided custom tunes for those that wanted more but weren't comfortable doing it themselves at an additional fee. If I end up purchasing a Cayman, you bet I will at least make my own hardware. Maybe the guys over at COBB or Procede can be persuaded into digging into the Porsche market.
 

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Cayman The Destroyer!
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I wish they would get into the market. Competition is a good thing. It's obvious you have quite a bit of knowledge and experience and I'm sure you can bring some good stuff to the table.

The CS is an awesome platform but doing mechanical work on these engines is a PITA and very expensive. Historically Porsche is not at all tuner friendly with their DME's and each generation gets worse.

My next play car will be a Factory Five 818R with a Subie WRX drivetrain. Easier to tune and if I blow it up it's no big deal!:hilarious:
 

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Discussion Starter · #26 ·
I text the owner of procede to throw the idea out there and have yet to hear back. He appears to be in the process of making a tune for the 997 turbo. Personally, just from experience with piggybacks and direct injection, that's personally my preferred route over flash tunes. So, hopefully he bites. He'd make an absolute killing by offering a user tunable piggyback for the 987.1/.2/981 cars.
 

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pwr hungry; I wish I knew what you know about this stuff before I took the plunge with the 987.1 TPC kit, I would have never done it if I knew this kit would cause my engine damage, but it was caught in the nick of time by a very reputable tuner. Sorry to barge in like this.
 

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Hello,

We currently do not have a turbo kit to release for the 981. We are working on it though.
Any news on when the 981 turbo kit will become available?

As of right now, we do offer our Atmo 355 PowerPak with includes a UniChip that we are using a UniChip for our tuning package and have picked up nice power. Here is more information on the PowerPak: TPC Racing 981 Atmo 355 PowerPak
Probably way to early to ask, but do you think this PowerPak will fit on a 2015 GTS and would the power gains be on top of the already factory increased power?
 

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Since we have not seen the 2015 GTS, I am not sure of the fitment. I do believe that it should be about the same though.

By the time the 2015 GTS is available, we will have our 981 Turbo Kit ready for release. We have been working hard on this kit and so far the results have been great!
 

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pwr hungry; I wish I knew what you know about this stuff before I took the plunge with the 987.1 TPC kit, I would have never done it if I knew this kit would cause my engine damage, but it was caught in the nick of time by a very reputable tuner. Sorry to barge in like this.
Given the lack of traction from your 2 TPC bashing posts (of the total of 3 posts you've had to date), it seems other TPC turbo owners (like me) have not experienced your problems. Moreover, I've neither read nor heard of any 987 TPC turbo conversion causing any "engine damage." Call me cynical, but I'm suspicious of the motives of any new forum member who signs up and then proceeds to post complaints about ANY vendor, much less one that I am quite familiar with and that has enjoyed an excellent reputation here for years. Since Harris has too much class to call you out, I will. Are you able to prove your assertion of resulting engine damage?
 

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pwr hungry; I wish I knew what you know about this stuff before I took the plunge with the 987.1 TPC kit, I would have never done it if I knew this kit would cause my engine damage, but it was caught in the nick of time by a very reputable tuner. Sorry to barge in like this.
I'd be very interested to know what your tuner found/corrected that would cause engine damage.
 
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