Hi Guys,

How do i extract 400bhp out of an 2003 Sti (UK Spec)

from start to finish, ie, fuel pump, plugs to clutch.

Costing would be helpful aswel.

 

650 injectors £300
Turbo (few to choose from) £1000-£1300
Fuel pump £80
Full 3" decat exhaust £500-£1000
Ecutek Map £650
Clutch Exedy organic £500
Spark plugs £40
Fitting £500?

You may need induction kit & headers to get you just over the magic 400, but above mods should get you close enough.