Hi, I recently bought a newage WRX with the PPP fitted, I understand this ups the power to about 260 bhp. I have since upgraded the exhaust system to the following, de-cat up pipe, Prodrive sports cat downpipe, roger clarke mid pipe and back box. My car is now more responsive, a lot less turbo lag (nearly none) and of course that lovely subaru sound is a bit louder. My question is that the car runs fine, but do I need a remap, and what sort of additional power gains could I expect if I have a remap.

thanks in advance!
Iain

 

The very least you should do is get your AFRs checked by someone with a wide band lambda either on the road or on the rolling road but if you get the car Ecuteked by Bob Rawle for instance you will pick up power, possibly economy and your map will be exactly matched to your modifications so you will get the best from your car. You will probably also run higher boost so the additional performance will be quite noticable.

 

Agree 100%. Bob did my humble UK MY99, I have magnex middle de cat and back box and a KN panel filter. Bob managed to squeeze 281bhp and 312 lb/ft out of mine. Obviously a massive improvement in performance and if on a 'steady' run, much improved economy. Worth every penny in my opinion. Go for it, you won't regret it.

 

Thanks guys, appreciate the response. I presume my car is ok in the meantime, just not running at its optimum levels .... ?

 

I should be fine to run around in but i wouldn't be pushing hard until, like Harvey says - you get the afr's checked!

 

thanks am now saving for a remap ;-)

 

I'm in the same situation guys, who's Rob Rawle and how much do his services cost?!!

 

Bob Rawle. BRD (Bob Rawle Developments) rbr@brdevelopments.com

 

Do you not get a cel code for the removal of the up pipe cat, as I thought this happened. If so how did you remove it, as I was thinking of changing my up pipe and fitting a sportcat downpipe.

 

My local subaru dealer have fitted the parts, no I havn't had any error lights at all!

 

With the sports cat downpipe CEL P0420 (cat missing) should not appear

Shaun

 

Mine has decat up pipe and downpipes, still no cel light.