car runs rich when coming to a stop

Calibrations for S-Manager - Use all calibrations at your own risk (dyno tuning recommended)
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Ichiro718
Posts: 74
Joined: Sun Oct 23, 2022 9:16 am

car runs rich when coming to a stop

Post by Ichiro718 »

hello everyone,so my turbo civic runs great, maybe a couple months ago, i noticed that the car will be at 19-20afr ehen off throttle(normal) but when coming to the stop, itll run rich, like 10-11afr for like 5 seconds, then it goes back to normal 14.2-15.1afrs. i did the tune myself, but i been trying to work out the iat fuel compensation. ill upload my tune, and hope someone can help me out.
Hpmengine_Nº1
Posts: 14
Joined: Fri Jul 15, 2022 1:32 pm

Re: car runs rich when coming to a stop

Post by Hpmengine_Nº1 »

*You can fine-tune that much more without it drifting too far into the 10–11 range you mentioned. You still need to work on it... I've done hundreds of calibrations and that's never happened to me. It goes from (off fuel) @ 14.7 at idle in less than 350 ms.

As soon as fuel is restored, so from what I gather, you’re having issues with deceleration as you approach idle. There’s a problem with compensation, BTDC, and possibly the speed signal for the lambda sensor.
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