uzzy-swr

hi there. still being a newbie i wanted to know what sort of power i could run my classic wrx to without engine failure. i mean without rebuilding the engine with forged bits etc. how much power could i produce just with bolt ons. grateful for any input. cheers

myblackwrx

iTrader: (1)

300bhp but this will shorten the lifespan (clutch and gearbox mainly) and if you drive it like an idiot all the time then expect the engine lifespan to be shorter.
Bolt-ons will never normally produce good power unless remapped to take advantage of the mods.

uzzy-swr

mines definately had a remap because its running on high boost. cheers for the advice tho, i'l be taking it quite easy but i hardly do giv it a thrashing.

myblackwrx

iTrader: (1)

What year is your car?
what boost is it running?

uzzy-swr

its a 94 wrx saloon. its running on 1.1bar boost. it does have a few problems which i havent had time t fix like the power cut off which you told me could be becuase of the high boost.

myblackwrx

iTrader: (1)

Standard ecu should look like this



you may have a chip in the bottom rh corner where there is the row of solder.

Or you could have a manual boost controller that could need sorting out

andywiddss1

iTrader: (4)

sounds like the boost needs turning down abit

uzzy-swr

erm could be. i checked the error codes and it came up with speed sensor but i have no speedo cable in at the moment since the old one melted by touching the turbo. also a maf sensor and a pressure sensor. i was told by changing the maf i should be good but even when the CEL is not on i still get the cut out of power. i dont have a manual boost controller so am guessing its a chip. is the ecu in the passenger footwell

myblackwrx

iTrader: (1)

Yep ecu is under carpet and kickplate.
Should be either U8,W6,2C or possibly Z4 depending if it's near the end of 1994

scoobynewbie72

iTrader: (1)

Hi, No speedo cable can put it into limp mode(power cuts)