E46Fanatics - View Single Post - Typical dry compression test values M54B30?
View Single Post
Old 03-19-2013, 10:10 PM   #6
Registered User
Join Date: Mar 2007
Location: the barnyard
Posts: 2,458
My Ride: '79 Massey Ferguson
Supercharged? Are you using a canned tune? Running an IC?

Maybe plugs a step or two colder would help. Higher quality fuel, back off the timing if you're able, cool the intake charge more/better.

A <5% change in comp ratio isn't going to cause knock, IMO.

Last edited by lcoleman; 03-19-2013 at 10:12 PM.
lcoleman is offline   Reply With Quote