STi Engine Performance | Subaru WRX Forum

Sticky Post 2.5L STi Engine threads here!

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13K

ID1050x vs Bosch EV14

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315

by zax

Replaced clutch still no 3rd or 4th

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186

by caralinscott

Mi Subaru carga a partir de 4 mil rpm que puede ser ?

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236

by WRCDNA

2018 STi stage 2 misfire, Help!

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Subaru Impreza WRX STI 2004

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220

2001 EJ207 Bugeye STI Valve SIzes

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213

Subieeeenationnn!

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426

Turbo Back Exhaust and Tune

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1K

by JLP301

2002 Wrx what happens

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1K

by zax

Clean 2006 suabru sti for sale

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N/A

Cobb Tuning has stopped supporting Stage 2 tunes - ISO 05 STi Stage 2 and 2+ OTS Maps

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3K

by XJman

Looking to make 500whp any turbo suggestions

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490

by jordancaird2

Subaru wrx sti limited 2020

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733

Weird Idle

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by zax

Dual avcs in a 2002

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799

by zax

Knock on start up.

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7K

by Rome89

Plz help

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by jordancaird2

2021 subaru wrx STI

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25

9K

by zax

2006 STI build questions

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994

by 06guy

Headlights both went out and lights came on

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996

Swap avcs problem on 04sti usdm harness on ej207

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604

2006 Sti tick only at 1200 rpm.

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754

Intercooler Fitment

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1K

HELP OVERBOOST STI

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776

by XJman

Intake runner P2006

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2K

STI Stock whp?

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91K

STI TMIC on 02 WRX

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572

by XJman

Need help with P0300 and P0000 codes

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2K

by XJman

Cobb stage 2 boost

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598

by XJman

Ej257 knock

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2K

by zax

Burning through a Quart of oil every 50 miles. No blue smoke, no leaks on the floor. What??

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Late boosting

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575

by Jeff90

DAM .500

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2K

STI 15+ HKS BOV with stage 1 Cobb sf intake

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2K

Rev9 dp

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827