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Anyone using the Additional Injector Kit such as the HKS AIC. Can they substitute for bigger injectors?
 

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They technically can, but they are hard to tune. The old FMax kit (for NA-T's) use 2 external injectors as opposed to 6 bigger railed injectors. They only come on under boost, so it's hard to tune, because everytime you boost, you are not necissarily boosting at the same psi/rpm.

Although if you are TT, it's easy to change the injectors (I think, at least compared to NA's).
 
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