Quote:
Originally Posted by VicS
I want to make the car go faster.
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You'll want a 22 head casting if you're upping power, the original 14 casting is fine for stock power but won't reward you if you're hammering on it. You'll need an injection pump with upsized pumping elements and a tune, and you'll need an upgraded turbo. The stock turbos are pretty well at their limit on these cars. If you really want power improvements, find yourself a turbo 606 to swap in. With them being 4-valve they breathe a lot better and have a central prechamber instead of offset like the 603.