Reply to thread

Message: <blockquote data-quote="justinschmidt1" data-source="post: 1126916" data-attributes="member: 8889">I had a completely built l&m engine, used the same components as an mmr 900.When you build a 550-600 rwhp street car, guess what, shit can break very easily.Car ran great for months then all the sudden it was missing, even on low boost/ timing.  The car DID make 500+ rwhp on the dyno on 13 psi after I sold it and the new owner put some race gas in it.. it was actually a bad tank of gas with low octane that caused the issues.I can only assume that it was a combination of running 15-16 psi, too aggressive with the timing, and probably had something to do with the gas in the tank at that point as it ran like a champion even at 22 psi when I had some race fuel mixed in with it.mc edit</blockquote>