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Old 12-09-2009, 10:49 AM   #1
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Default Need some tuning help

My set up is in my sig, I'm having a little problem while running the car hard at an auto-x. When I am in 2nd gear running at full throttle almost to the redline then let off the gas quickly to start braking for a slalom or whenever I try to "Feather" the throttle through the slalom, the car starts jerking violently until I hit the gas again. Any idea what might cause this? It only happens when I run way up in 2nd gear and come off the throttle very quickly. My AFR is around 11 or so at this RPM. I have calibrated the TPS several times and loosened the throttle cable slightly, neither helped. Any help is much appreciated!
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Old 12-09-2009, 10:58 AM   #2
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fuel cut on decel kicking in?
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Old 12-09-2009, 12:06 PM   #3
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I'll check the decel table this afternoon, do you think that might be the cause? The tuning still isn't perfect, but more than good enough for any driving. It's not a huge deal, it just gets kind of annoying when autocrossing.
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Old 12-09-2009, 12:08 PM   #4
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could be the TPS value in the overrun settings and simply accel enrichments as well.
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