hey guys, so ive got a k&n 57i, milltek manifold and cat back exhaust.

will i need a remap to benifit or will the ECU just adapt on its own?

thanks

It will adapt but wont be running to its full potential! I'd complete the rest of the exhaust before you get a remap!

im not gonna change the cat as i dont have the money for a sports cat and i cant be bothered with the hastle of having a decat and changing it back for the MOT.

i managed to get a good deal on the manifold and catback (£300 used).

but if the ecu will adapt then thats ok.

Remaps are only worth it if you've taken the car as far as u want to. Even then, for what you've got on atm, the gains won't be huge. Your call ultimately

thanks for the replys guys.

so with the mods ive got now, what bhp would you guess ive got and what would a remap add to that?

With a map maybe mid to high 150's. everyone's cars will give different results so difficult to guess accurately

ah, so not a lot then really, ok, i'll leave it, maybe i'll do more mods later on.

btw, why do some people put a 60mm throttle body on, and would i see any difference if i put one on?

no point imo with the mods you have would put it towards a sports cat/cams

A lot of people won't bother till they've got k&n and full exhaust on, even then it's not necessity.

The bigger throttle body just gives greater cross section for air flow. Someone who has fitted one will give u better before and after review. I've got one on mine but it was installed At same time as load of other parts so I couldn't honestly say how much difference it makes.

I had mine on when i had just my K&n57i, found it had a more responsive throttle, little bit quicker, smoother idle and revved alot smoother too!

Pumabuild did remap on my first st, Said it was race + map. Had k&n and piper decat and cat back. Car was really agressive after but mpg was 21-22 :C. Problem is next time you do a mod ull have to map again