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Help with Accel TPSDot curve

 
Old 03-12-2019, 01:22 PM
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Default Help with Accel TPSDot curve

Hi All,

Here is a picture of my accel tpsdot curve. I was told I need to redo my curve so all values at negative TPSdot are zero. I was also told I have the accel enrichment adding fuel when I lift is a very undesirable behavior. Can someone explain to me why? This below setup is making my car running very smooth.
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Old 03-12-2019, 06:46 PM
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It is undesirable because your engine does not desire to have fuel when you lift off the throttle.
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Old 03-12-2019, 07:46 PM
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I actually use TPS dot values lower than 0% to trim fuel out when I lift. You need a zero column and could benefit from more resolution in the 0-150% TPSdot throttle tip in range. It should help with drivability. My curve is not perfect, but when logging I never get any lean spikes in all ranges of throttle speed. I tuned it the way I did to compensate for sucking at EAE/wall wetting tuning.

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