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StI power gains?


STI7

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Hi guys fully new to subaru so im abit of a noob lol was just wanting a scope on what the best mods to start with that will benefit my v7Sti. It already has a full 3" . And ARC air box. Cheers for you input guys

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Ive been doing a fair bit of reading on the under mani intakes I seriously wouldnt bother. Seems they cause a lot of surge issues with stock/small turbos as they come on too fast once you have decent boost control/tune. Change out the ribbed pipe directly after maf tho cant be good for flow. The under mani intake will handle more than the VF30 can throw at it anyway.

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My V7 Sti had a 3 port boost solenoid, reflashed ecu and a 3" exhaust to a genome muffler and was making some serious power and getting 18psi in first gear and 20psi in upper gears and holding 19 at redline. Drove it hard for the 35,000kms I owned it and had no issues......I miss it terribly!

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hen a tune will get the most out of the car

Have done a fair few tunes and depending what u after it can be either more aggressive for power or more economy or in most instances a bit of both

Always get a lot better drive response than the stock map

And yea that 11.9 at meremere was with stock turbo and exhaust and intake and a simple boost controller and we did a road tune on it

Shows how good the gains can be

On average depending on driving style I can pretty much say u can expect 70-100km increase in fuel economy and more on open roads

On all the tunes we did it\'s about the average gain on economy

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    • MrSg9Sti04

      Afternoon team,
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