The injectors you wont need unless you upping the boost, If you are going impeller and pulleys or even just impeller, make sure you upgrade the heat exchanger,( Frozenboost) and I would do this even of your not changing a thing, 850 injectors( I used Bosch EVO14's) , DW340 pump, and you WILL need UPEV's upgraded MAF's. I ran Stillens oil and trans coolers and my temps were always in check.
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14 Q50 AWD, ARK, ECUTEK (SEB), Takda, 
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