what mods do I need to reach 400bhp
11 April 2016, 08:48 AM
#1
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what mods do I need to reach 400bhp
Hi all I have a 94 impreza wrx running 310bhp with the following mods. Walbro fuel pump, de-cat, 440cc injectors, td05 16g, front mount intercooler, k&n induction kit with a simtek-alkatec ecu as I said running 310 bhp with 18 psi boost
11 April 2016, 09:12 AM
#2
This should do it along with some slightly bigger injectors and an adjustable fuel pressure regulator.
Your engine and gearbox may not be happy at that level though depending how you drive
11 April 2016, 11:10 AM
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Agreed on the gearbox but had my engine rebuilt about 5000 miles ago forged pistons, sti8 rods, acl race bearings and rcm head gaskets and mark at tdr said it should be safe at 400bhp but what gearbox to go for? as the 6 speeds are ridiculous prices. What injector's 750cc?
11 April 2016, 11:39 AM
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Agreed on the gearbox but had my engine rebuilt about 5000 miles ago forged pistons, sti8 rods, acl race bearings and rcm head gaskets and mark at tdr said it should be safe at 400bhp but what gearbox to go for? as the 6 speeds are ridiculous prices. What injector's 750cc?
6 speed is the best way forward really. There's PPG and apparently the newer 5 speeds are stronger but the best proven easiest way is just fit a 6 speed once yours let's go
11 April 2016, 12:18 PM
#6
Agreed on the gearbox but had my engine rebuilt about 5000 miles ago forged pistons, sti8 rods, acl race bearings and rcm head gaskets and mark at tdr said it should be safe at 400bhp but what gearbox to go for? as the 6 speeds are ridiculous prices. What injector's 750cc?
6 speed is the best way forward really. There's PPG and apparently the newer 5 speeds are stronger but the best proven easiest way is just fit a 6 speed once yours let's go
12 April 2016, 08:49 AM
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do you know of anyone is selling a 6 speed on here? And selling 750 injectors lol searched eBay can't find any injectors on there any ideas?
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12 April 2016, 05:18 PM
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PPG use to use the standard 5th gear which sort of defeats the object and its as expensive as a 2nd hand 6 speed box for the kit alone. SC do a 5 speed kit I believe but you will need a clutch, brakes etc, its cheaper buying a newer (New age) STI tbh.
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