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Discussion Starter · #1 ·
Hello,

My 2007 Z06 has an idle issue. It will start fine, no matter if hot or cold. However, if I give it a little gas, the RPM will dip very low, sometimes down to about 300-400 and then rebound back up to around 850. This happens even while driving, which has killed the car several times. Only mod I have is a Halltech killer bee CAI. I have replaced the stock throttle body with a new stock throttle body, thinking it may be the throttle position sensor or servo motor causing issues. The new throttle body has not solved the problem.

Any ideas?
 

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Which Halltech did you install. There are two for the LS7. The MF103 that does not require tuning and the MF108 that does require tuning? The MF 108 will cause surging and all sorts of problems if you have not reprogrammed the ECM.
 

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Discussion Starter · #3 ·
Which Halltech did you install. There are two for the LS7. The MF103 that does not require tuning and the MF108 that does require tuning? The MF 108 will cause surging and all sorts of problems if you have not reprogrammed the ECM.
I installed the MF103 as I did not want to go down the rabbit hole of tuning!
 
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