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Old 11-03-2005, 04:51 PM   #1
onelife2430
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Member#: 92525
Join Date: Jul 2005
Default How much HP should i gain ?

i have a 03 wrx and i am installing a sti hood scoop and sti intercooler i want to know how much hp i should gain from doing this here are a list of my mods

catback exhaust(catless)
up pipe and down (catless)
cobb tuning
vf 34
cobb intake
hks ssqv
walbro 255 fuel pump
sti pink injectors
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Old 11-03-2005, 05:00 PM   #2
BlackSnake
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Member#: 42850
Join Date: Sep 2003
Chapter/Region: MWSOC
Location: Glenview,IL
Vehicle:
WTB 04-07 STI
Roller/Blown Engine

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well the hoodscoop wont do anything towards HP numbers. Will improve cooling. But with the STI TMIC I think +15ish

-Bogus
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Old 11-03-2005, 05:00 PM   #3
hondaeater69
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1998 RS

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has your car already been tuned, or are you running the OTS mapping? I would personally get a bigger TMIC than the STi, but that's just me. I say sell that STi and get a helix or something else used.
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Old 11-03-2005, 06:45 PM   #4
onelife2430
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ya it has the stage 2 cobb i am going to get a protune in the near future but i mean i got the sti for 300 bucks and its basiclly brand new and i really dont have that much money so i jus went with the sti cuz anything is better than stock. but i know what u mean bigger is better with ic so but i was just curious to see about how much hp i would gain from it
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Old 11-03-2005, 07:21 PM   #5
hondaeater69
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so is your question how much power will you gain from the STi TMIC over the stock TMIC? if so A: not very much. 5-10WHP would be my quess.

and with IC's, bigger is NOT always better, it doesn't work that way.
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Old 11-03-2005, 08:05 PM   #6
onelife2430
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well i mean in my case talking about a tmic i guess bigger is better but u are right my mistake bigger is not always better
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Old 11-04-2005, 08:03 AM   #7
JNUTZ
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Chapter/Region: NWIC
Location: San Diego
Vehicle:
2003 WRX
Rally Blue

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From what I've heard sti intercooler doesn't really do much over the stock. I've heard it's really not even worth it. What you should have done was save another 100-200 bucks and went with a bigger tmic and gone to stage 4, you already have the supporting mods. I gained about 30 whp just by having my utec dyno tuned by pdxtuning, rather then using base maps. So instead of buying the sti tmic you should have just had the car pro tuned. IMO.

Keep us updated on the #'s you come up with after the tuning.

Good luck man
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Old 11-04-2005, 01:16 PM   #8
onelife2430
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ya well see thats the thing i just wanted a bigger tmic than stock to keep it cooler cause i am gettin sprayers and i am also gettin a protune in another couple of weeks so that was part of my reasoning but def i will get you guys updated and thanks
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