I've read through threads such as this, http://www.e30tech.com/forum/showthread.php?t=115724 , which I found to be very informative. I'm interested in a 24v swap, and I think that for my needs (a little more power and torque, but keeping costs down for the engine purchase price), an m52b28 would be most fitting. After reading through the thread posted above, I've become a little confused. I'd like to purchase a plug and play harness such as this: https://www.kasselperformance.com/pr...0-s50-m52-s52/ , since I'm very intimidated by wiring. However, it says it's for obd1. I've gotten confused and searched through threads trying to find the easiest way to complete the m52b28 setup. What's the easiest, most bare bones way to go about the wiring and ecu setup for an m52b28, obd1 or obd2. Yes, it's a noob question, and yes, I have searched. Any help would be appreciated.