Hi Guys,
I`ve owned my 95 WRX for 8 yrs now, it was an everyday car so never went for power etc, but now its not used as much i thought about the mapping scene, mainly for torque.

Anyway, the current engine mods are

Bigger TMIC (off of a 2004 WRX)
K&N panel filter
Ninja Sports Cat (downpipe cat only)
HKS full 3" exhaust from end of downpipe
standard headers
Standard Z4 ecu
97k (miles) on the clock
2003 fuel pump

So, with that lot, what is my BHP/torque guesstimate increase do you reckon, i know every engine is different etc but i dont want to go for a remap if 5bhp is going to be the gain.

And the main question, how does it get remapped as i read the Z4 cant be mapped ?!?!?!

as i say, virgin to the mapping scene so feel free to be basic

 

Yes it can be mapped with a daughterboard fitted to your z4, search esl you will find alot of info on it, if you turbo is a td05 and u add some 440cc injectors you could potentially reach upto 350bhp.

 

Not with a newage wrx top mount.

With the current spec 280-300, with bigger injectors 310-320 at a guess.

 

A newage wrx topmount is capable of around 350bhp but a sti one is good for 400!