Hello, I've a 1988 Firebird with a 305 TBI.

I'm setting the timing. OEM timing is 6° but I want advance timing to increase performance.

Actually with WinALDL after a 20 min driving with some mashings on the gas I take abot 18-20 knock counts. Is this value accetable?

What's the maximum accetable value for a 20min of driving??

Thanks

Giuseppe

 

might be mechanical K? 20 is nothing. It will retard timing regardless.

 

Thanks for your answer!

can u tell me the maximum value that can be acceptable value?

 

OEM timing is 0* BTDC. So at 6* BTDC you have already advanced it.

Some of those counts are most likely from the starter engaging during cranking. While others are from the forced knock test that the ECM runs.

RBob.