Team MightyBoy

Hi i am thinking about putting extractors and complete systerm right through on my 800 hatch has any body know any one who has done this? much power increase on stock motor

You'll probably notice a 'seat of the pants' performance improvement, but that will mostly be deception caused by the sound rather than an actual power increase. A really well built system might give you a 5% gain, which amounts to about 1.5kw

Thanks for reply might just get it breayhing a bit better that will help a little bit