In a message dated 9/29/03 6:16:27 PM Central Daylight Time, brobertson@xxxx writes: > Too high octance won't cause pre-ignition, but it can cause a fouled > miss. If engine isn't high compression, or high temp, factory ignition > may not yield enough burn time. Isn't time on these new cars computer > controlled (non-adjustable)? > No distributor on most vehicles made since the early/mid 90's. now it's coil packs, kind of like a digital distributor. the EP-ROM (i think) gives the ignition system its timing information. i suppose when you buy a 'performance chip' the timing is modified to accomodate other changes. > Most of the rice burners I encounter are running stock exhaust > manifolds. Backpressure doesn't drop until rediculously loud muffler. my experience exactly. > > Isn't stock DeLo already 9 seconds or so 0-60? yes, if it is running right:-) Andy [Non-text portions of this message have been removed]