I currently own a newage jdm WRX,2002,
I have a rough idea of bhp due to posts on here.
I was just wondering what BHP i would expect to gain from a:
TD05 18G turbo
front mount 'cooler
walbro fuel pump (do i need one due to it been a jdm?)
3" de-cat system, (plus up pipe)
up graded fuel injectors (not sure wich ones 440? 550? as again are they needed?)
plus a remap.
Cheers

 

Just about enough to fry the gearbox, I'm afraid.

 

oh dear
what is a safe BHP then 4 my car?
it wont be used for track days just commuting back and forth to work and days out erc,etc

 

Well i'm running 333bhp & 325ft lbs on my 2004 WRX and the gearbox seems fine although i don't launch it very often

 

I know a couple of Bugeye WRX's running TD05 18G's with a front mount and STi Pink injectors plus a few other mods

Standard 5 speed boxes but uprtated clutches

Both mapped by Bob Rawle, one with Methanol injection running near on the 400 BHP limit for a maxed out 18G

Midlife

 

Yeah, have heard 380bhp is common with TD05 18Gs.

Limit of the WRX gearbox is often seen as being around 350bhp/ft/lbs.
However, it really depends how much you track & launch it.

Might be fine, although there is a risk involved - just be aware of it.

 

cheers, is there any way to make my gearbox stronger?
should i replace it with a STI box?
is it worth it as im not doing track days in it but want the bigish bhp?
Thanks for all your advice
Julian

 

You could fit a 6 speed STi box or have a PPG gearset for the 5 speed WRX box, whichever way though your looking at about 3K fitted for either