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On stock piping my AFR's were in the mid 13's at idle, and it idled around 900-1000rpm, which I was happy with. After I installed the Ash inlet and 2.5" piping kit, my AFR's are in the 17's, and sometimes off the wideband scale(Lean). It will bog rapidly at 500rpm and sometimes it will die if not given throttle. I did a boost leak test and heard a leak from the passenger side recirc valve. That has been fixed, and I now hear NO boost leaks, but the result has not changed. Driving and boosting is completely fine, it's just the idle that's driving me insane. I can't even adjust it when the idle screw because it's so unstable. TPS is set to .44, no codes, no boost leaks. Could is possibly mean I just need a re-tune? I am on Nistune, and I'm wondering if the bigger piping has thrown the AFR's out
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