Quote:
Originally Posted by hebert.mike
I realize I should definitely wait to get a tune until after I change injectors/fuel pump and turbo, but I'm wondering what are typical gains I'll see with it? I have all catless pipes and stock headers and turbo on my 03 WRX
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More info needed. What do you have now? What will you be adding? Over a stock tune the gains are quite large and you will feel a big difference even without a turbo upgrade.