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Old 09-20-2012, 12:34 AM   #1
Scooby Newbie
Member#: 273648
Join Date: Feb 2011
Location: Steilacoom WA
2007 impreza 2.5i

Default 07 2.5i help

hi i need some help im goin to be getting the supercharger kit from raptor super chargers and was wondering in order to get more then 9psi its just get a smaller pulley? and ill need to change the pistons and rods? can i just get heads from a wrx or sti and put them on my car if so which years wuld be sufficent? and will i need to get a whole new exhaust setup/fuel pump/injectore if so what kind? any help would be great im not trying to make big power but i would like to have a lil more fun.

and i know i could just trade it in and get a wrx or sti but i really dont want to so thats in the bqack of my mind and my last resort
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Old 09-20-2012, 02:17 AM   #2
Scooby Newbie
Member#: 280689
Join Date: Apr 2011
Chapter/Region: SWIC
Location: Glendale, Az
2010 2.5i Impreza
Newport blue


Try the bolt on forced induction forum, people that frequent there will more likely have info for you.
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Old 09-20-2012, 03:33 AM   #3
XSV Klutch
Scooby Newbie
Member#: 259013
Join Date: Sep 2010
Chapter/Region: RMIC
Location: Colorado!
2007 Impreza 2.5i
Greyish- Boosted


walbro 255 and sti "pink" injectors (565cc) would be your fuel pump and injector. You could keep stock exhaust but it would limit flow. You can get the 9 psi pulley from raptor. ^the aftermarket forced induction thread would get you answers on everything else.
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Old 09-21-2012, 09:57 AM   #4
Eyedoc Orlando
Scooby Newbie
Member#: 146216
Join Date: Apr 2007
Chapter/Region: South East
Location: Birmingham, AL
2007 Impreza 2.5i SE
Newport Blue Metallic


Your stock exhaust won't really limit much flow, keep it if you like a quiet car and want to hear the supercharger.
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