Gab,
The way you listed your numbers is confusing. I first read it as Baseline 280/320 being the change for the intake/pulley mods went from 280 stock to 320 whp. Then I took your second pair, 320/340 to be the increase from the tune. So you went from stock, 280, to modified, 320, then to tuned, 340.
Could you elaborate?
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