Many people have been bolting up single turbo kits to the stock manifolds for a while now and really are making serious power this way. We will be doing some more research on this when we do the upgrade turbo to see if it helps.
This helps to keep the overall cost of the kit down. The kit so far has been making well over 25 horsepower to the wheels per pound which is incredible so I cant imagine a lot to gain at these power levels with aftermarket headers.
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