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i installed JBA shorty headers and Jba high flow cats on a 2008 charger r/t daytona 5.7. after installation car threw codes p0420 - p0430. insufficient capacity 2nd bank cats. i installed O2 simulators to back sensors out of exhaust stream, no more P0420 or p0430, but car is throwing p2098 down stream fuel trim system 2 lean please help.

Vehicle: 2008 dodge charger r/t daytona 5.7

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P0420 Catalyst effieciency bank 1

P0430 Caltalyst effieciency bank 2

P2098 Downstream fuel system  too lean

Check the fuel pressure, you should have 58 psi. at idle.

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asked Jul 21, 2018 by John

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