Modified Impreza STi 1/4 mile 12.43 @ 106MPH

Our best run at Mason Dixon Dragway on Sunday, September 21st.

1994 Subaru Impreza L chassis
2.5L STi shortblock
WRX (2.0L) cylinder heads
18g Turbo @ 20psi max
TurboXS Utec EM with launch control & flat-shift enabled
2005 STi 6-speed transmission
Performance clutch with lightweight flywheel
R180 rear diff
2005+ STi hub/bearing/brake conversion
245/45/17 Dunlop Z1 Star-Spec tires

Category:

Autos & Vehicles

Tags:

• subaru
• impreza
• wrx
• sti
• 0-60
• launch
• awd
• acceleration
• 1/4
• lrxti
• moran

[renns944]

you're shortshifting real bad.. times would improve a lot if you revved it out more.

[UBSLIPN]

If you saw the dynograph for this motor, you would know why. Having WRX EJ20 cylinder heads on it gives us higher compression, but the top-end HP suffers. I have put all the dyno data into a thrust calculator that determines the best shift points for the motor.

[aspen02STi]

how much did the car weigh? street car? Sounds good!

[UBSLIPN]

Approx. 2,850lbs with a 6-point roll bar. It is a road-legal car.

[SpecterFX]

Nice, a bit of a question, I plan on trying to get my hands on a 2002 Impreza WRX non sti. Will the cosworth 2.5L or any other 2.5L short block engine bolt right into the 2.0L WRX Impreza? Will I need the 6 speed from the Sti to do the swap? And btw that is one mean ass subie ya got there lol, mean acceleration. o_O

[UBSLIPN]

The 2.5L and 2.0L are interchangeable. We didn't even need to modify our older Impreza to install a 2.5L (just had to install the correct wiring harness). The STi 6-speed is not required, but it's much stronger than the 5-speed.

[TaylorGangSuperman]

im pretty sure the sti's speedometer goes up to 160 mph not 140, correct me if im wrong

[ad6speeds]

Fuck!!!

[subeefan]

yeah cause the ratio is closer

[bubbllyboo]

very nice.. the 6 speed goes through the gears so quickly!

[Liftedgully]

LOVELY!

[aspen02STi]

niiiice!!!