Hey guys I'm back with another couple of questions
1) Where in heavens name can i get a remap done!? O.o i hear they are awsome but i have no idea who'd be able to do that. and just to make sure, a remap is when the ECU is reprogrammed to give better performance correct?
2) I was hoping to put on a new exhaust to make my car slightly more powerful...specifically this one http://www.amazon.com/98-06-BMW-Catb...5874631&sr=1-2
Now should I get a new exhaust manifold with it? Do i have to? Or would i get good HP gains without the manifold?
And how difficult is it to install a new exhaust/manifold? thanks guys!
p.s. if anyone can reccoment any other ways to get HP gains let me know!