currently running 271bhp and 267lbs torque on a 93 wrx with full blitz nurspec system,magnex decat downpipe and upipe,hks induction kit,arc blow off valve.Everyfing else is standard inc fuelling and ECU, Next week ill be fitting a toda racing lightened flywheel and ap racing clutch as well as walboro fuel pump, FSE fuel pressure regulator and STi yellow 440cc injectors, Has anyone got any ideas what my BHP and Torque figures will be pushed up to?

 

You can't just swop the injectors without a remap. Don't bother with the FSE there have been reports of problems with them. I'm running a standard one with no issues. The extra mods you have listed will not improve power.

 

you need to get the ecu sorted mate! either a power fc or a piggyback like a esl or scoobychip! good power figure alreay tho! do you know if your getting much det? do you use fuel booster? Coz wrx's are mapped for 100ron, and they can det abit on our fuel, never mind with sum of the mods you have!! Do you ever hit the fuel cut coz its pretty low on a 93 and i would of thought youl be near it with no cats and aftermarket up pipe?? Whats it boosting at??

 

440's are good for 320-340hp with a td05 and fmic, and of course a map to put it all together!

 

they are good figures already if it is a standard ecu, to be honest I would say they are quite high for a 93wrx

Fitting the other stuff will not increase your power without ecu mods in fact you may find that your car starts to overfuel actually causing you to lose power.

 

no det at all just had a full diagnostic run at power engineering and was told by ian everything is 100%,i do get fuel cut in 3rd and 4rth gear in cold weather, its currently boosting at 0.9bar, do you think i can drive the car with the bigger injectors and fuel pump for a few months until ive got enough money to buy the power fc, im planning on getting it supplied and fitted by andy forest....

 

forgot to mention ive always used shell vpower in the car, the previous owner also used it since he imported it....

 

I would not drive it on boost at all once the fuelling has been changed, without a remap.

Your Ecu is set to your standard injectors there won't be any benefit to change to larger injectors without a remap.

Just wait until you can afford everything and then buy it all at once.

Get the Remap ASAP it will be the best mod you can get.

 

yes dont fit the injectors until the last minute, you will be okay with the fuel pump though. Just fit the injectors before the remap and drive off boost,

 

ok many thanks for the advice