walhan_qtr

iTrader: (3)

here is a vid of my Z06 vs my cousin's 07 STi. all roll runs.

1st run 40mph roll, Z06 in first, STI in 2nd and no spray, passenger (camera guy) in the Z06 and no passenger in the STI. Z06 spun a little in 1st.

2nd also 40mph roll, STI on spray, I took the pressure on the tires down to 30psi which helped a little, again no passenger in the STi.

3rd run 45mph roll, camera guy in the STI, and the STi didnt spray... I broke my tranny hitting third gear I will be getting a new built transmission very soon and hopefully will have the time to run the sti before it snows here! Keep in mind that elevation are killing the Z06 (power lose in N/A cars is more than FI)

Sorry for making this Long... here comes the vids.

practicing shifting before the race...
http://www.youtube.com/watch?v=zNPtRiQnNOg

Race vid
http://www.youtube.com/watch?v=X9DEfd8BnV4


List of mods

C6 Z06 Mods:
(596whp/554wtq Corrected!)

- wcch ported/milled stock LS7 heads
- street widow cam
- Ported Fast intake
- LG headers
- K&N CAI
- injectors, fuel rail, running E85.

Subaru STi
(560whp/540wtq)
(613whp/591wtq on spray)

- built motor
- turbonetics GTK-550 Turbo
- ported stock heads
- kelford cams
- fuel upgrades
- bolt-ons
- tuned @ 26 PSI on E85

Enjoy

got-a-ls1

iTrader: (12)

yea the altitude is killing you... doesnt hurt the turbo car nearly as bad 26 psi at 6000 feet is like 24 psi at sea level. the ratio is definately in his favor... your losing 20% power where hes losing 7% IF he was running 26 psi at sea level... Nice thing about the turbo at altitude you can just make more boost to make the power you want, but of course your working the turbo harder in the thinner air. Dont have that luxury N/A.


26psi @6000 ft on the boost guage is + the 11.8 psi air pressure. 37.8 total
26psi @ sea level on the boost gauge is + the 14.7 psi air pressure. 40.7 total

37.8/40.7= .93 * 26psi = 24psi.

sorry im really bored... lol.. i think i did that math right. Always wanted to figure out how much altitude affects turbo performance so just thinking out loud.

Sticks n Stones

Surprising results actually. Even with the altitude issues (6,000' Seriously?) I woulda assumed the Z06 would have still killed the Sti. The math provided by got-a-ls1 comes out to 476rwhp for the vette, and 520/570rwhp for the Sti. On a spreadsheet I guess it makes sense- Z06 is probably 100-200lbs lighter (if neither car is on a diet), while the Sti has AWD eating up its hp.

06GTOKID

I got beat really bad by a sti in my C6 z06. I have dyno tune, cat back, and C.A.I. I dyno 467wrhp. The Sti was fully built on 30psi of boost. It was a low roll like 20 to 25(spun really bad) but damn they can be fast.

Zac_Speed

iTrader: (4)

That's why I love the C6Z... Out racing turbo cars and doing it well on just motor. Then if they're next to you wait till about 160 and check again, they'll be falling back! Good runs!

brians91formula

iTrader: (12)

Not the outcome I expected at all. I thought the C6Z would have pulled a few cars.

A H/C/I C6Z should be well into the 10's at 135+mph shouldn't it ?

TheHitman

iTrader: (2)

A 600rwhp STi will go into the 10s at ~135. We also don't know if the STi is full weight or not. That elevation would kill a lot of the power the Vette is making too.

bongva

iTrader: (7)

who two very fast cars! good runs!

94Mustang302ci

You have a c6 ZO6?

Stopsign32v

iTrader: (1)

Yea its impressive as hell a 427cid V8 is hanging with a 4 cylinder!






Both cars are impressive but that STi has one very well put together setup.

Stopsign32v

iTrader: (1)

I was thinking the same thing. That Z06 has to move the F out on the highway!!

brians91formula

iTrader: (12)

Forced induction is one hell of a drug

Stopsign32v

iTrader: (1)

LOL who put a pulley on that septic tank?

2SSARME

Throw a 200 shot in that z06 and you won't have anything beating you for a long while.

chavez885

iTrader: (12)

He'd lose to everything as he blew his motor to pieces.

Good video, thanks for sharing.

walhan_qtr

iTrader: (3)

my car lost almost 100whp >>> which makes it ~16% power lose. for some reason, that STI also lost about 17% of its power!!! why??? I dont know. we are assuming that the correction factor used was way higher? or maybe there was something wrong with the data we got. we are thinking about putting the STI on another dyno just to see what its putting. obviously the STI didnt lose 17% when you compare both cars in these runs!

walhan_qtr

iTrader: (3)

yep we are at 5400+ above sea-level!!!my car is making 497 uncorrected and that STI was at ~460awhp uncorrected with no spray! and about 510awhp with the spray uncorrected! we think there is something wrong with either his uncorrected numbers or his corrected numbers because there is no way he can beat a z06 with 30+whp more (the runs with no spray!) especially that the Z06 had no issues in the run. good fast 6900-7000RPM shifts and little spinning in 1st gear! full weight both cars... Z06 weights ~3100 + ~175 (driver) + ~190(camera guy!) = ~3465lbs STI weights about ~3480lbs with the driver.

LightningTeg

Sick cars. Z06 needs more turbo


Yeah that makes sense...

walhan_qtr

iTrader: (3)

at sea-level YES! where we are, it should run a 10.9@129-130... that STi also should run 10.8-10.9@127 at this altitude. at sea-level both cars should run low 10s

walhan_qtr

iTrader: (3)

no weight reduction in both cars