Hey there, new to this forum. Just picked myself up a 1990 BMW 318i with an m40B18 and as some of you probably know, not exactly the fastest car around. I was originally planning on rebuilding the engine with worked cams, high comp pistons, chipped ecu etc. But am wondering if its worth swapping in an m42b18 ? how hard is it to swap an m42 into a 318i? ive read that its not worth modding the m40 and it'd be better to do an engine swap for the money. What are your thoughts? Apparently my m40b18 transmission should bolt up to an m42 and its pretty straight forward doing the swap.
What about wiring?
Thanks in advance.