b16a2 swap having problems

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leos11104

Junior Member
i just swapped a 99 b16a2 into a 97 ex i used the stock ex harness the car runs good intill the vtec kicks in, when the vtec kicks in my rpms start jumping all over the place recentl the check engine light came on for fuel trim p0170 and p0172 running rich i just want to fix the rpm from jumping every were help please!!
 
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