Jags, seems that these GT turbos spool so much faster and they feel as if they never let up, with the Stage 4 setup it felt as if the car stopped pulling at about 4500-5000 rpms, I have dynoed the car on a dynodynamics and got 455 HP to all 4 wheels, I did have a boost leak though and haven't had the chance to get another done since.

Hope this helps.

George

 

FAT911 can you tell me about the characteristics of the gt640 compared to stage 4 and dyno #s is you have any

 

That sounds like stage 4 numbers or even less. Stage 4 should put down 500rwhp. I was told that the gt640 kit puts down 550 to high 500 at the wheels. Evoms show 583 rwhp.

Jags

 

Also was that with the race program

 

Jags,
That is AWD numbers. Divide by .75 to get the crank. You have loss through all four wheels, not two!

 

Thanks Stephen, your the man.

Also note that I had boost leaks, this was on 93 Octane too.

 

But thats still 606hp at the crank. That about 34hp short isnt it?

Or is it the dyno?

 

I would say that it is a combination of the dyno and the OEM boost hoses giving up

 

Jags

I had lunch with Kevin(Ultimatemotorwerks) and Henry at BandH Motorsports yesterday. They mentioned to me of your 996tt. I am planning a serious project for my car that possibly involving Kevin's Stage3 or 4 ZC turbos. Shoot me an email if you want to discuss power upgrades.

 

dynodynamics put down very low number, my stage 2 has 370AWHP from dynodynamics.

 

DD is one of the lowest number in the industry. It is great for steady state tuning but does not interpret sweeps very well. You can not compare a DD to any other dyno.