I recently finished my base file for me to start tuning with. It included mostly transmission changes with a few basic engine changes as guided by WebRacin's tuner guide.

Now, whenever I start my car the RPMs surge a few times before it settles where it should be. It was much worse the first few times I started, but it still does it to a small degree more than it did with the stock file.

I haven't yet gone back to the stock file, but I think I might this weekend to see if that cures it. Anyone else seen this or know how to fix it?

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2004 Impala LS - got some mods
NAIOA Moderator

Making you think twice before picking on Impalas