novarally

I have a 1994 WRX and I want to start modifying it, its been de-cated and has a K & N Induction kit on it. I am going to put a fmic on it, I have got a Walbro pump
So the question is I am looking for 320-350bhp so
1.What injectors
2.What Ecu
3.Any other things that I have missed that I will need apart from mapping, rolling road

Moley

iTrader: (9)

440 injectors (maybe 550's), Apexi ECU. Maybe worth looking at getting your headers done aswell

GC8

As usuall with posts like this its all about increasing horsepower without even a thought for the chassis and particularly the brakes. A 1994 WRX struggled to cope with 240PS when it was brand new.

You need to spend a lot of money on the brakes and the chassis before you even consider increasing horsepower. Nearly 240 (or 260 if its a C-Series car) horsepower in a car that weighs 1200 kilos is damned fast; if you need more speed maybe you should be looking a little closer to home?


Simon

novarally

I have got Brembo brakes, whiteline rear antirollbar and alloy droplinks, handling and stopping is not the issue I was after advice on modifying the car to 320-350bhp like most other people on scoobynet. The speed is not in question if I want speed I do rallies, I just like the buzz of putting your foot down and being pushed back in your seat.

GC8

You have to admit that someone knowing their **** from their elbow here is rare!

novarally

What headers will I need and what is the best ECU to get

RoRu

For your power target get your std headers ported (do a search for Harvey Smith) his ported headers have a good reputation.

A for ecu's the money it seem that the Apexi PFC is very hard to beat @ £750ish fitted and mapped.

jonny gav

iTrader: (1)

****......check

elbow.....check



ok mate, first of all your turbo is fine for what you are wanting to do.

if you are going for a front mount a hybrid is very good value for money.

you have the fuel pump, exhaust, filter that are good enough to do the job.

if it was my car i would be going for-

set of phase 1 STI 440cc injectors as they direct replacements and can be got at a good price BUT if you are wanting more power in the future go for a set of 550cc injectors for the head room.

next i would put an SX/FUELAB fuel pressure regulator on so if you need a little more from the injectors the pressure can be raised.

then a set of ported headers to give that bit better spool and flow to the turbo.

at this point you will be looking at an ECU to make use of the things you have fitted.

i would (and have) go for an apexi power fc as they are without doubt the best VFM ECU available (around £750 fitted and mapped by Andy Forrest)

you will also need some sort of boost control as the pre 96 map sensor will be maxed out with the boost you will be running, a GBE/DAWES DEVICE will bo the job but a apexi AVC-R will give you better control over your lower gear boost.

there is also a boost control kit for the apexi power fc but are almost as expensive as the AVC-R without some of the controls so the AVC-R is a better bet.

this should be enough to give you your target

hope this helps

novarally

Many thanks this is the sort of feedback I was after so not many bits to get again

jonny gav

iTrader: (1)

LOL better get saving

GC8

Wurzel

iTrader: (1)

On my MY00 I fitted

Lightened crank pulley
Lightened Flywheel
Samco water hoses and intercooler hose
APS CAK
TEK 2 ECU
VF24 turbo
Walbro 285 fuel pump
3 port boost solenoid
Decat SS Downpipe (Wrapped)
Prodrive PPP centre section
PE T75 Backbox

I also got Bob Rawle to remap the car with that lot fitted and we managed about 340ps. even with 4 adults in it, it goes like a missile.

As for chassis I fitted
whiteline ARBs and drop links
17" wheels
Braided brake hoses
STi 7 Brembo brakes.

and I could not be happier, the car pulls like a train and 2nd gear should have a government health warning on it.

HTH
Steve