Hello,i want toimprove the performance of my car (cooper s 2005) I have only a K&n intake system,i have plans to putt a header and a complete exhaust to start,Somebody know how much hp can this mods create? Which brands do you recomend to me?Witch will be the next step?thanks!!

 

WOW, I'm surpised no one has replied on this yet.

I've heard of this "piggy back" computer thingy that you just plug in and off you go. The good thing is you can unplug it and your car goes right back to stock if you want.

Don't know the name of it. I guess I'm not that helpful.

D

 

An intake and full exhaust ($2000+) will get you at most 20hp. A pulley ($100-$200) will get you 25-30hp. Just something to chew on.