Thread: ESS 650 Dyno
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      04-08-2013, 04:20 PM   #28
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Drives: ESS M3 / M4
Join Date: May 2007
Location: AZ

iTrader: (6)

Originally Posted by Kaane View Post
I am just talking about the lean condition over 7500rpm. The DME can't add fuel if the pump is maxed and fuel pressure begins to drop.
We limit timing over 7500 RPM in our software, that is why you notice the TQ drop off. Doing this keeps the motor safe even if AFR's run a little leaner as the motor get's to 8k and above. Technically with our software anything below 13.5 at high RPM's is safe. The only time this would be an issue is if we were forcing timing up top which we do not do.