Tuners- Help With Idle Surge On Big Cam A4
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Tuners- Help With Idle Surge On Big Cam A4
I recently had a head/cam install on my 02 Z28. The car has an idle surge only in park and neutral, and occassionally in drive. Idle is about 800 in drive, but fells great. Also notice a lot of rich smell. What needs to be changed to help the idle surge to go away in park. I thought I found a good thread about timming, and VE tables, but can't find it now. Just trying to help my tuner come up with solutions. Again, I know I read a post, but cannot find it now to save my life. Please be specific, as I am not doing the tuning. My tuner did a bad a** job, but I can't stand that park/neutral surge. 232/236 .595/.601 on 114 with xer advance. Thanks.
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Adjustmens will have to be made to........
Main VE Table
IAC Park Position
Idle Air In Gear
Decay Rate P/N
High Octane Advance Table
He needs to adjust each of the above tables to your car and the surging and such will go away. You *should* be able to get a cam that size to be very livable..... little to no surging etc....
Main VE Table
IAC Park Position
Idle Air In Gear
Decay Rate P/N
High Octane Advance Table
He needs to adjust each of the above tables to your car and the surging and such will go away. You *should* be able to get a cam that size to be very livable..... little to no surging etc....
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Originally Posted by 2xLS1
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I really dont want to drill. I am told the PCM will relearn that anyway. I know that the tuner is educated, but what about that smell? The IAC count the main thing that causes the surging in idle? Is the IAC changed seperatly for park and drive?
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I checked my IAC counts with a Tech 2, they are 54 in drive, bounce around 20-35 in park. The LTFT's are at 15, 17 % in park. This affecting anything? After it idles a few minutes in park, it stutters pretty hard.