Lazy AFR

[FlaBouy]

OK guys, new question

Two logs show commanded AFR and actual AFR as recorded by the WB. My question involves watching the actual AFR lag commanded AFR when going WOT and again when backing off.... there is a definative lag of AFR error when ramping up and down. Am I commanding AFR changes to quickly or is there something amiss with the tune. Second log was not fully warmed up before I logged this condition. First log show same condition after heat soak.... Disregard my IAT issue... aftercooler going on this weekend...

[Bill@HPTuners]

might be partly due to the fact that your only getting 5fps because your logging 25+ bytes of info. Try to keep your bytes at 24 or less so you get at least 10fps of info. The more resolution the better.

[jimmyblue]

Check your wideband, the LM-1 I have allows varying the
amount of "filtering" and this can add a substantial lag to
the output. I'd go unfiltered if you're interested in transient
throttle behavior. Don't know whether you can controil the
LC-1 similarly but dig into the handler software and see if
you have something like this.

[FlaBouy]

OK, I will try both..... thanks guys.....