Lean spike when stopping quickly
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Lean spike when stopping quickly
I wasn't sure if I should put this in the EMS forum or here, but whatever... I've been running on Jeff's latest base maps for nearly a month now with a new AEM intake and a midpipe. The car drives pretty bleh on the base maps, so I've been eagerly waiting for updated maps. In the meantime though I have noticed one rather odd thing. When I come to an abrupt stop, at a light or stop sign etc the car stutters and my AFRs lean out to 16.5 or higher before they stabilize and go to my normal idle of 15. Regular idle is fine, my MAF readings look normal, and besides the excess fuel the map is using I'm not seeing any other problems, but it got me thinking what could possibly be causing this? Any ideas?
#2
because the map Jeff provided is not a performance map...if it bothers you I would uninstall the AP untill Jeff gets you your next calibration or final performance tune
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![Uhh](https://www.rx8club.com/images/smilies/uhh.gif)
Anyway, none of that is really pertinent to the original question. I'm going to try uninstalling and see if my AFRs are at least better on the OEM map even if it doesn't know what to make of the AEM intake.
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It isn't the same thing at all as pegging lean when I go off throttle... it's a stumble in the idle when I stop the car. I have two screens in my AEM intake, but my idle is otherwise perfect, so I don't know that I want to remove one to try and fix this other issue.
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