I don't think a race chip would have a difference, however, a properly tuned chip can have a great difference. If you are too rich on the bottom it is hard to build boost. I used to build 10# -12# with my stock convertor and stock turbo. Once I switched to a TE-44 I couldn't build over 2#. ( my track is at 5800') A looser 12" convertor and Thunder Fab intercooler really helped then.