Car ran slower then expected.

crackedback said

I'd turn off the gear vendors and run it through on transmission only.

Every time it shifts it's giving up time/distance

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I only use it , or turn it on in 2nd gear if not I cross in 3rd at 3800 rpm , much better in 2nd over . I shift into 2nd over at 5800 rpm 2nd over takes over @ 4600 rpm to 5500 at end of track
Anyhow don't want to hijack the thread , rather folow see what happens , hope to pick up some tips .

Thanks