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Hey dude, had the same issue but i didnt have an air flow meter. my car lagged, it felt like it would take forever to build boost. i got an afm and did a boost leak test and found a crack in the intercooler, fixed it. I did new plugs then i got and adjustable fpr and it kinda helped.. but then i read somewhere that fuel pump failure is not usually just it stops working, it gets "lazy" looses pressure under boost. I got a 255 lph walbro from enjuku racing. its like a 20 minute fix. totally worth it! hope it helps
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