93 325IS 6Cyl - Which mods to start with?

[thanasus]

Hello everyone... been lurking here for a little bit. I just bought a 93 325iS with 143k miles on it. Single owner vehicle and it has been services only at the local authorized dealer. Clean car with a few minor cosmetic probs (emblem needs to be replaced, the molding around the passenger side window needs to get repainted, etc)

After I clean up the little things I want to throw on some mods. I know its only a 6 cylinder but I'd like to get maybe an extra 100 horses out of it. I can't find the FAQ here. I figure I'd start with exhaust, then go to brakes/suspension. Prolly throw on a turbo charger.

Question is, what is a good order to go in? And are there any mods in particular that are great for these cars?

[MrM3]

Welcome!

the only way to pick up an extra 100hp is through forced induction. but it could easily cost double what your car's worth to get a good turbo kit (AA) and have it installed properly, but i'm sure there are other cheaper options. suspension is a good area to work on if you plan on tracking your car occasionally, but you wont need bigger or better brakes with a near stock engine, just get some good brake pads and SS brake lines and you'll be set. the exhaust is another good mod as the stock exhaust is pretty heavy, but still wont give more gain than in the 5-8hp range. a chip is good for a noticeable difference although still wont boost power a whole lot. if you go all out with bolt on mods you may end up around 20hp more than stock

[m42technic]

280 hp eh... I say start with an S50 transplant. Or bore and stroke your M50 to a 3.0 and get an S50 head and go from there.