I have an 06 Vette. A tuner helped me with a tune from an 08 that has the rev matching feature. The rev matching seemed to work OK but it was actually happening a little early (revs started dropping back down before the downshift). I still have that tune but since then I have put a 440 engine with about 500 RWHP and had the engine dyno tuned. It seems like the rev matching is no longer working or is less than it was. So I guess my question is how to I make adjustments to the rev matching on downshift. My tune is a .ctd file which I cannot upload here.
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