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Just wondering what the max output of the 57 trim turbo would be with the only upgrade being the psi-fi FMIC ver. 2 and 650 or 750 cc injectors, plus all the mods in my sig.
 

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Get their fuel return kit/750cc injectors and really crank up the boost...

The fuel return kit is a wise addition to what you already have...
 

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I can tell you that you can get around 415whp on pump gas at 23.5psi with that turbo and PSI-FI's kit.. :thumbsup:

(650's did it fine for me)
 
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