How much boost?

[scheides]

I ran 20-22psi with my 20g on 92 octane w/ no problems or knock either. JET is right though--the knock sensor is a very picky piece, too much or too little torque and it may not be reading correctly. What did you tune it with? Might want to get some wideband action and make sure it's tuned a little conservatively, that will help prevent problems in the future.

The problem is that once you finish tuning & go about your merry way, one day you might get some bad gas, be boosting along like everything is fine, but your egt's spike through the roof b/c you're detonating like crazy. Of course, you don' t notice b/c you've had it tuned the same way for the last six months, you boost on it regularly, and might not notice!

So, feeling lucky? I ended up turning the boost down a bit, kept it at 18-19 because I'd rather be a few HP short and a be a bit more on the safe side than a sad punk w/ holes in my pistons.