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backfire after fpr+255lph fuel pump install.

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foxracing4500

10+ Year Contributor
336
9
Jan 21, 2012
Europe
to start I have a 16g and as of today all supporting mods. hooked up the FPR, adjusted it to 43.5 with vacuum line off and took her out for a spin. I did 2 WOT pulls and smiled but on the last one she backfired right before shifting. I am kinda pondering what happened but I tightened down my greddy bov because I did notice boost spike. also I am only running 15psi until I get some tune and injectors. always had trouble adjusting my TPS. I also have my wastegate slightly open to prevent spike but waiting on external wastegate. soo what do you think,

bigger injectors?
boost leak test +1
adjust TPS?
fuel pump rewire? also battery is in the trunk.

or was this all caused by the boost spike?

sorry for asking and trust me I do search alot on this site just I thought I may have ####ed up installing the FP and FPR.
 
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