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Old 03-24-2005, 12:11 PM   #7
Scooby Specialist
Member#: 56414
Join Date: Mar 2004
Chapter/Region: MWSOC
Location: Olathe, KS
2017 Tacoma TRD OR


Originally Posted by Zola
Are you sure it's too much timing? It looks like not enough timing. In my experience, the 7th column from the left is the amount of advance the ECU would be running if it were in control, and the 9th column from the left is the amount of advance you have programmed into your timing map. From 2 psi on up, you are running anywhere from 6 to 16 degrees LESS advance than the stock ECU would be happy with.

I would lean out the AFR a bit and try and get advance to be more in line with what the ECU likes. YMMV.
absolutely. Increasing timing increases knock sensitivity whereas lowering timing simply has an adverse effect on EGTs.

The reason why the timing is lower than the factory ECU wants to run is because with Utec we are running considerably leaner than stock plus running higher boost levels and if we were to leave timing stock with as lean as we are, then we would be knocking all over the place.

factory ECU runs about 9.5:1 afr. Also he's on 91 octane which requires lower timing.
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