M42 and newer engines have knock sensors and unless you have a supercharger, you should be OK with 89. Superchargers call for 93 but in CA you have to settle for 92 which seems to be OK. Gary __________________ [size=-2]95 Sport-Alpine White-5sp conversion, M3 clutch, 3.72 E30-LSD, Bilstein PSS-9s, 3"stainless-TriFlo, 17s from 330i staggared w/BFG KDWs, DASC K&N w/foglight intake, cross-drilled BavAuto rear rotors w/Pagids, 4-pot Brembos w/drilled 320mm front rotors, stainless lines, BimmerWorld RSMs. BavAuto front splitters. M-Style rear spoiler, tower brace, X-brace. |