Inconsistent Idle AFR - ECT compensation issue?

s300 and SManager software questions & answers
Danielr96
Posts: 17
Joined: Sun Dec 25, 2016 4:11 pm

Re: Inconsistent Idle AFR - ECT compensation issue?

Post by Danielr96 »

2x0 wrote: Mon Apr 02, 2018 4:33 am If 185 ECT and 135 IAT are your normal warm engine conditions then both compensations should remain at 0% for those values. Post up your compensation parameters. It could be that your cold ECT and IAT fuel compensation is a bit high, which makes it start up cold and run well but once it is warmed up it actually needs more fuel in the fuel tables.

Also, running in closed loop would help adjust for whatever factors are throwing this off. This is the purpose of closed loop, because your table and parameter values will never be perfect for all conditions. Let the O2 sensor feedback do it's job under normal driving and idling.
Hi 2x0,

I really appreciate your help man! My normal warm engine conditions are 185* ect and about 85-100* iat, the compensation for these parameters is in fact 0.

I only have this issue during hot restarts when the iat exceeds 125+ degrees.

My calibration and datalog is attached on a few posts above if you would be kind enough to take a look at them.


Thanks!
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