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First things first, 3" exhaust from turbo back, will make a BIG difference.
This will raise the boost slightly and thus give u more power.
Secondly a bleed valve to increase boost, or alternatively u could get an electronic controller but they cost heaps and do the same thing as a $10 bleed valve.
My friend was doing 12.5 quarter miles with just these two mods.
Next things would be a new ECU (Power FC or something) and a bigger less restrictive Front Mount Intercooler.
All this and then bigger turbo etc etc.
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