[lepak91]

I currently have an SCT chip with the EGR disabled, rear 02 sensor disabled and the idle rpm's raised.

Everything was working great for the longest time and then I started to get hanging revs where I slowed down and placed the car into neutral. It would hang around 2K rpms or higher for 15-20 seconds to drop to normal.

I disconnected the battery for a few hours and took the chip out. I then took the car into the dealership to have them look at. The only thing they found was the base idle was set too high and they adjusted it back to normal. The car does run a lot better than before. The idle does not hang like it used to.

My question is why would the base idle have been set too high after the chip was pulled out and the battery disconnected for a few hours? Shouldn't everything return back to the stock programing when the chip is pulled out? Could there be something wrong with the chip? I would like to get some feedback before I put the chip back in to see what happens.

Thanks,
Dave