Cosworth orientation and APS sr56 Turbo Aftermarket,
would a batch fuel siphon and fuel injectors be efficient
for a 500 to 550 hp enlarge or should we sell the
fuel injectors and siphon with a aloft flow?
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3 comments ↓
No I think you would need to go pretty big(800cc+) for that turbo and definitely a good fuel pump. Most Subaru guy’s use Walbro pumps. Stock injectors are only good for up to a 16G maybe a 18G if tuned concervitively. Buthe way you will have to tune very aggressively and use race fuel to reach your power goals with that turbo. I would look to a rotated 35R kit to get there.
i dont think the stock fuel pump and injectors would be enough.
also, i dont think the stock axles and gear box would be enough. at that kind of power level, i believe it is possible to break an axle from a hard launch.
it will be very $$$$ to play in that power range with a STi. perhaps you should consider a large displacement V8 car like a corvette instead?
you need a better pump and bigger injecters all stock injecters and pumps are usually rated for stock stuff so go bigger. i wouldnt worry about anything else at the moment, i have a friend with a 800hp STI and he hasn’t had to replace anything but a joint (only cause he dropped the clutch at 5k rpms) STI’s are very very tuff cars.
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