I have HKS 4.11 Fd and Evo 8 3/4th gears. I dont have slicks though so I ran 18x9.5 and 265/35 street tires. Car made 740whp @38psi on ER dyno (~700-900ft MSL).At 33psi I ran a 10.6 @140mph with a 1.89 60ft at El Paso Motorplex (~3700ft MSL).

Though that combo he has might hurt his mph I dont think it would enough to make him trap under 140.

 

my car was running 136 with about 650 whp on a dynojet...

 

You would be surprised, I'm gonna run 15''s with 225/50 on it and see how it does, if it feels like the 411 is holding it back I will chuck it and run a bigger rim/tire combo.

 

Yup. I trapped 134 making 630whp on the same dynojet. At altitude as well.

 

full weight 3345lbs with me in it. 630whp in VD 137-138mph on street tires

 

Something is not right. We both have 6466s

At 40psi/e85 I trapped 145mph and did 10.1 in a full weight SSL evo -- you also had a way better 60ft than me.

At 35psi/93 I trapped mid 130s and ran a 10.7

Regardless of the possibility of inflated dyno numbers, with that boost, e85 and that turbo you should be over 140mph easy. How much time was in-between the dyno/tune and going to the track? Do the logs look the same from the dyno and track or any variances?

 

You right onto money here, its the final gearing that must be holding it back...

I had Shep 5spd Ultimate Ratio with 4.11 and 265/35/18 tyres and it was hurting my traps... (2.3L with HTA82 at 6000ft above sea level)

went down to 235/40/17 Semi on stock rims and I picked up trap speed...


regards
Sal
.

 

idk know about this. With 4.11's on 245/45/r17 i went 10.65 @137 mph. On the stock FD and shifting into 5th i was doing 11.1@ 131-132 mph. The only think i changed was gears.

 

Easy to settle this one. OP should throw stock wheels on car and go run a few times to see what he traps. Depending on where he is though he might have to wait until next season.

 

Maybe I missed this, but what kinda wheels and tires are you running and what suspension is on the car? You can make all the power in the world but if your not putting it down to the ground all that hp is useless.

 

4.11 is going to help you a ton though being your on a 2.4 wont help that much on 2.0 much.

 

Car is on 26x9. 16 fd wheels..

 

What is your 1/8mile trap?

And what is your tire pressure? Seen quite some MPH be lost with low low pressures