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Message: <blockquote data-quote="speed2horizon" data-source="post: 3751925" data-attributes="member: 30831">Well, the 390cc injectors from GSR is low impedence injectors. In order to use them safely, U need to add in injector resistor pack as JINKL the SIFU said earlier. GSR/EVO engine wiring comes with the resistor pack.Regarding the ECU, not necessary. If u have piggyback, then the A/F at different RPM could be tuned. But a turbocharged engine mapping is somewhat different compare to Normally Aspirated engines.Could or could not. Cause U have not found the source of your problem.It could be the BOV that creates an inaccurate Air flow reading to the ECU when it releases the air. Cause ur MAF reads before the BOV.It could also be the valve that doesn;t close soon enough and create compression leak. This may caused by either insufficient spring strength that responses slower. Or the original NA cam setting that originally overlaps.Can... Can tahan one. Don;t worry. There are tons of B16/B18/D17 honda engines that uses stock internals boosting around the street and start disturbing all the protons....As long as tunning/boost is on the conservative side, then everything should be ok.No need to change GSR ECU/Wiring. But need to add in resistor packs. Else get SARD high capacity high impedence injectors.SAFC NEO is not necessary. There are no Valve timing to control. But they still remap according to the same method. RPM and remap fuel injection. just more set point.Cheers and Happy boosting.</blockquote>

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