I'm new to the site, and BMW's. I picked up a 2006 BMW 325i about 2 years ago and I have loved every 121,000 miles of it.
So I am new to BMW's, but I am not new to the mod world. I have a 2003 F-250 6.0l Powerstroke that has tons of mods and I love the power it makes. I used the forums to learn more about the best mods for my truck, so I figure I should do the same with my car.
I have no desire to the mod the exterior, but I would like to pep up the performance a bit and maybe gain some MPG. Excuse my ignorance, but what are the best mods for these cars? Are there tuners for them? And what about cold air intakes/exhaust?
Again, excuse my ignorance with these cars, these imports scare me! LOL. Are there any DIY easy/free mods? I appreciate any help you guys can provide!