have you tried swaping ecu's? when you hit the bump maybe shitty wiring could have shorted into the ecu and could cause the problem.. just a guess.. also I know you said you checked it but the vacume line for the fpr... also it would make to much sense but check your couplers and check for boost leaks...
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Originally Posted by
Z28ricer
"What shitty poorly fitted aero did you ziptie on today, after installing shitty knockoff parts that dont fit worth a damn, followed up by poorly fitted cheap heavy wheels with the wrong offset so they rub but you play it off as looking cool, and then post pics here today"