Originally Posted by Classycali
So we may be able to get into 335 territory? Lets say the odds are with us and with tune we get 275, we can add intake(which wont give much power) less restrictive exhaust, and say SS headers. Primary cat deletes is suppose to be 15whp, so maybe, just maybe...
With manifold, tune, and headers (probably $3-4k all in), you are looking at probably 290 at the crank, ~250whp. Stock 335s dyno 260-280whp, so we are still looking at about a 20whp deficit. We would have benefit of less weight (~200lb) and a more linear power curve. I think it would be close with a stock 335i. However, that leaves us maxed out for power, and at that point the 335 can add a chip for a few hundred bucks and forget about it.