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Can you give us a hint at to what moter, trans, you have.. It makes a big difference weather you are an L98 LT1 or LS1 Stick or Auto..is it stock, etc?
On a'97 you may not run at all. Lots of tuning problems with 4.10 and A4 in '97.
Maybe even in a 99 as well. Still working on it.
I just went from 3.42 to 4.10 in my A4 and only have 1 day at the track and hit the rev limiter all day long even after adjusting many times. Getting a new program today to try this weekend.
I also thought guys with nitrous don't want to run the taller gear?