Quote:
Originally Posted by Shane@DBPerformance
Just get a wideband to know the a/fs and datalogger to see if it's knocking. You could be very rich at part throttle and lean during boost and never know by looking at old plugs.
To truly read plugs, you need to put in a brand new set, do a full throttle run and then shut the car off as soon as possible before letting the rpms come back down and then look at the plugs with a light and possibly a magnifier.
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Indeed im getting a WB and data logger. The plugs have maybe 30 miles on them, majority of the pulls were wot. they look okay, but im giving up on trying to read them.
I thought i would be able to get a decent reading to know whats going on with the engine, but from what everyone says including you it sounds like its not accurate at all for what i really want to know.
thanks for the help, I'll let you know what my logs and a/f look like once i get them.