Originally Posted by Turbo955

I have the Speedtuning ECU flash and the resonator bypass pipes and it made 404 HP. Yea, .8 bar is only like 12 psi boost so we all can bury that factory gauge. I dont have an aftermarket boost gauge installed but it would be a good idea. I'm curious to know at what boost are the factory turbos out of breath? I wouldn't even be surprised if at max boost we arent even holding 1 bar...

Originally Posted by porschespeeddem

I was looking under one today at work, and it looks like the Transmission cross member bolts to the transfer case, so if one were to remove the transfer case, a new x-member would have to be made, or modified to adapt to the trans. It bolts into inserted nuts in the body, so it would be tricky to relocate the entire cross member.

Originally Posted by Evo650

When I floor this truck the stock boost gauge remains pegged. Todd told me the boost levels that he was seeing but I can't remember them. I'll ask him next time we talk. The turbos that we're using are fairly close to Garrett GT30r turbos in flow and power potential. The truck made just over 560awhp on a Dynojet and, according to Todd, the turbos are not maxed out yet. What's amazing about this kit is the fact that there is less trubo lag when compared to stock.

Evoms didn't recommend pushing this engine much further without lower compression pistons and beefier rods. Forged internals with more boost is my next step hopefully beginning in Feb. if all of the parts are ready.

I am concerned about the tranny but upgrades are only available right now overseas. I've received quotes from between $15k and $18k just for an upgrade, I must supply the tranny! Any domestic options out there?

Originally Posted by porschespeeddem

I would fully expect your gauge to be pegged all the time, as I'm sure you're in excess of 1 bar. Rather than looking for Porsche specific trans upgrades, have you looked into ZF transmission upgrades? That is the manufacturer of the trans and it is used in TONS of applications, i think that would broaden your search siginificantly. What is the V10 TDI VW using? That thing is holding some torque as well.

Originally Posted by Evo650

Isn't the Porsche tranny made in Japan? It's the exact tranny that was used in the Audi RS6, I think. Many tuners have stated that the weak link in tuning the RS6 was the tranny which concerns me. Level Ten claims to have the ability to modify this tranny for about $6k but I've heard some things abouth them that concern me.

Interesting thought about the V10 TDI. If you help me do some research I'll buy you a beer!

Originally Posted by Turbo955

EVO650, when Porsche designed the Cayenne Turbo they used an engine which isn't a "typical" Porsche engine by tradition. Meaning: practically no Porsche Tuner has ANY experience with the new Cayenne V8 engines. This is actually a very bad thing because a lot of bad ECU mods and tuning kits have been produced at the beginning because there was no experience whatsoever with these engines. I believe you about how tough it was to tune for the addition of the turbo kit. Before you and others designed turbo kits,
ECU mods were the best thing to do on the Cayenne Turbo. A moderate ECU tuning provides the Cayenne Turbo with around 50 horses more. Owners shouldn't expect much 0-60 mph acceleration improvement, unless the Tuners aggresively modify E-gas response and maybe even the gearbox ECU (which isn't recommendable, especially if people plan to tow or do serious off-roading). A Tuner I know tested performance of the Cayenne Turbo with original ECU and a modified ECU (520 HP instead of 450 HP). He told me that performance from 0-125 mph was improved by merely 2 seconds only. Again: we're talking about 0-125 mph, not 0-60. He also said that most ECU kits deliver around 40-50 HP without further mods like exhaust, catalytic converters, turbo chargers. To get the best results, a high flow exhaust system is highly recommended but usually adds only around 10-15 HP to the whole package. Also what I've found is that any ECU mod voids the warranty for the engine, the drivetrain and the auto tranny. No exceptions made! And if Tuners tell you that ECU mods aren't detectable: they lie! ALL ECU mods are detectable by Porsche, even if one uses a second motronic black box in exchange of the original one. It is true that some Porsche dealers might not be able to track ECU mods but in case of a major warranty issue, a Porsche rep will have a look at your Cayenne TT. Porsche asks for a complete printout of your car's motronic. Why? Well, if the motronic reads a mileage of 7000 mls and the speedo cluster a mileage of 12000 mls, there is a problem. Not to talk about a saved max. rpm of 7300(!) and a max. boost pressure of 1.2 bar. A little hint: the printouts usually contain coded messages which can be "translated" by Porsche only. Personally I could care less about the warranty cause I want an aftermarket turbo kit, preferably yours. As for the removal of the heavy offroad parts associated with the trans, I haven't had a chance to take a look at it but I wouldn't wanna butcher this thing while making payments! LOL...

Originally Posted by CayenneTurbo77

Just wanted to add to the best of my knowledge.....The GIAC ECU flash DOES NOT void the factory warranty......Only if the ECU Flash was the direct result of the problem.......also...my dealership....Brandywine Porsche outside of Philly....offers the GIAC tune AT the dealership.....I doubt they would do so if they felt the engine in any harm while voiding everyones warranty......I cant speak for the other tunes...but with my mods....my boost gauge also stays pegged...and gets there really fast!!!!

on a side note...racing a jeep srt8 in 2 weeks after my winter break.....will post my kill videos soon after

Originally Posted by fmarrero

Hi Mr EVO 650

My name is Paco and I am looking forward to have this upgrade for my Cayenne Turbo S. Do you finally got a chance to have a 1/4 mile reading?

How reliable have the truck at this moment?, could you explain how fast the truck goes as if I look at the video seems like the normal cayenne is not giving a race to you.

Thnxs, Francisco

Originally Posted by TT VIPER

What happened with this build? Is there any dyno numbers? Did they build the engine or ran it on stock engine? Is the car still running?

We're in the process of building a monster 957 Cayenne TT and I wondered what happened to this car.