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I added the Zl-1 pump, the ADM FPCM, and 65lb injectors at the same time as the 3.6. Whether it was necessary or or not for that power level, I don't know. The tuner I took it to (whom I no longer use) suggested I upgrade the injectors and fuel pump because the SLP kit w/ the 3.6 pulley and headers (their 650 HP package) came with a BAP. He said he did not like using a BAP and hence his advice to upgrade the fuel system. He also called Phastek for advice. So that was his rationale to me at least. I've since moved to ID-850s and a different tuner becuase the car ran poorly from the other shop.
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