07-08 335i
can be bought for around $15-18k with 70k to 100k miles
then you get a JB4 or JB+ tune for either $500 or $300, a bigger charge pipe for $275, and an intercooler for $500.
now you have 400whp or 360whp depending on JB4 or JB+
if you go JB4 and you add headers, you will be around 420-440whp with a new JB4 map
3.0l i6 twin turbo
I have jb4, charge pipe, intercooler, but it is re-tuned by a local shop for 380whp at 14psi, 22 mpg city/ 35 mpg highway
also, i havent had anything go bad on my car, have had it for 15k miles at 14psi too, 2 years, all i had to do was regular oil change and had to change rear rotors and pads
This post was edited by t9x on Dec 19 2014 10:40am