Your wheels and tires are so much bigger then stock. I bet if you put your stock wheels back on you would drop about .4 seconds or more. Those tires are HUGE.

 

try shifting at 6500rpm or 6200

 

I dunno I might have a boost leak or something, I have no Top end at all, after 60mph my car turns into a eclipse.

 

jon is right you can launch the car the is aparent in your 60' time. what you need to do is get some light 17" wheels for the track and you will see 13.7 - 13.5's. my roomate had a '04 STi and on it 4th pass he ran a 13.4, with only an exhaust. and if it dies at 60 it is definitely the 19's.

i would say these would be a good for track use only on your STi, IMO....

https://www.tamparacing.com/forums/s...rims-only.html

 

seriously though, try shifting earlier. Ftom 6200 to 7000rpm the vf39 has little power

 

true, the vf39 runs out of grunt about 6600rpm.

 

Ninja edit: You all talk too much this late at night... I spent time working on this post! BTW, those are HUGE tires.

I'd like to preface this with what should be a standard nerd warning on all my posts.

2lbs lighter than stock, but what about tire size? Do you keep stock-ish rolling diameter? (i.e. 225/45/17 and 225/40/18 are about the same) If you're larger, then you're geared taller. This might not be a horrible thing with a 6-speed, but compared to a stock car, you'll appear to accelerate slower. If your rolling diameter is less than stock, your gearing will be higher, which will make you shift more often. I think I lost my point in there somewhere.

Let's use an example of Yokohama ES100 tires (which are what I run) and revolutions of the tire per mile of travel. THey don't list specs for the 19" version, but the difference between 16, 17, and 18 should help illustrate my point.
225/45/16: 866 revs/mile (shorter sidewall)
225/45/17: 828 revs/mile <----- stock STi size
225/45/18: 797 revs/mile (taller sidewall)
225/40/18: 828 revs/mile <----- use this for 18"

Your tires are < 750 revs/mile at that size!

Stock WRX (pre-2006) tire size is 205/55/16: 831 revs/mile

I run a 235/40/17 on my race wheels, which is 848 revs/mile. I do this so I get slightly better acceleration coming out of corners with my 5-speed.


(btw, Tirerack now has an "extreme performance summer" category... sheesh)

 

with those mods you dont need anywhere close to 265s anway.

 

with a 265 tire on an STi you beter have about 700whp.

 

yea Im thinking about parting ways with them but everyone likes them and tells me to keep them. Decisions, decisions, decisions.