Hello Everyone i own a 92 325is 5 speed. currently i have a CAI and am planning on doing a straight pipe removing the cats and resonators. I don't have a ton of money but i want to do some other things to give me a bit more power. I was thinking about a Turner chip??? or possibly some underdrive pullys??? does anyone know of something else i can do TB upgrade? or any other tricks you can do to a non vanos M50? Thanks alot I appreciate any imput.