800 RWHP on stock fuel system..... CPE TT

[Paolo Castellano]

Hello all!

I would like to take this opportunity to share some of the data from the AEM datalogging we have done on John D'Amico's 1997 Gen 2 DIY twin turbo Viper GTS.

I recently put a little bigger turbo on the car with the new air intake system and intercooler setup.

I initially did some AEM datalogging while John D'Amico was driving to monitor the air-fuel ratios with basically the same tune the car had on it before the upgrade.

Rogue GTS, Bill, has done the datalogging this last week while I have been driving.

We basically upped the boost very incrementally and monitored the air to fuel ratios and the car still had enough fuel at almost 10 PSI where we had the boost cut set.

We were confident the car would have enough fuel to run that boost and decided to bring it to the Sound Performance dyno day yesterday and were pleased to put down 796 RWHP and 782 RWTQ on the stock fuel system stock motor, throttle bodies and heads. The only thing this car has on it is my turbo system, T&D's and a boost-a-pump and AEM.

It took about 5 pulls on the dyno to not hit the boost cut since the boost controller solenoid duty cycle was set for 10.0:1 air to fuel ratios.

The car made 735 RWHP on 10.5:1 at 8.5 PSI

When we leaned it out a smidge, it was hitting the 10 PSI boost cut almost instantly.

So, on the 6th run when the car was definitely not as cool as I would have liked, we pulled the #'s you see on the dyno graph.

[plumcrazy]

thats crazy paolo. congrats.

how safe is it though on the stock fuel system ?

[99 R/T 10]

Using a Boost-a-pump?

[Mr Hemi Head]

awesome
What is the rwhp when the boost is limited to (?) for cast piston cars.

[Paolo Castellano]

Using a Boost-a-pump?

99 R/T 10, Yes sir!

[Paolo Castellano]

awesome
What is the rwhp when the boost is limited to (?) for cast piston cars.

Mr Hemi Head, With how conservatively this car is tuned,
I think the 800 RWHP# with C-16 with cast pistons would be safe as I remember reading about some Macedo car with a roe and nitrous making 800 RWHP on cast pistons.

Also a slightly larger turbo than what was on the car would make the same power at lower boost. This would make the fuel pressure drop with the boost climbing to a minimum.

Plum, I datalogged a ton of stuff that would convince you these are safe #'s on the stock fuel system. Please feel free to call me @ 630-878-3907 if you have any questions.

[Joseph Dell]

It is good to see someone finally proving the limits of the stock fuel system on a TT!

I've hit it on SC cars but always wondered about TT's.

In theory, 800-825 should be possible w/ a stock fuel system b/c you don't lose that power that drives the SC.

On a ROE, it takes about 80-100rwhp to spin the blower. On a paxton, it takes about 160-200rwhp.

Those are some sick #'s !! nice job!!!

JD

[martyb]

I can attest this CPE TT runs very well! The looks and performance of Paolo's system is amazing. My little Gen 1 Roe car went home with it's tail between its legs.

Awesome work Paolo!

martyb

[Russ M]

Stock injectors?

How much fuel pressure do you bump it up to?

Or do you mean with the stock pump?

[Paolo Castellano]

Stock injectors?

How much fuel pressure do you bump it up to?

Or do you mean with the stock pump?

-Russ

55# injectors/CPE billet rails
stock fuel pump
boost a pump, raises fuel pressure 1 psi per # of boost.

[KepRght]

very nice Paolo!

price of the diy kit?

[Casey]

Nice job Paolo!

[SYNFULL]

very nice Paolo!

price of the diy kit?

Ditto- I am planning on going with a s/c because I don't think I can afford a tt. Would like to know what a system goes for.

[big-n-italian]

i got your message about this paolo.

WOW. CONGRATS!

[Earl_H]

Paolo,

Congrats...Side question: do you ead boost thru the AEM or Boost Controller. If you are using an alternate source, have you noticed that the AEM reads about 1.5lbs less than boost controller/guage?