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Old 01-29-2018, 04:38 PM   #1
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Kooks LT headers and O2 sensors/plugs going bad?

So I have a 2014 Roush stage 3 with some upgrades. I am running Kooks LT headers catless with an H pipe, the ID1000's for injectors, 65mm ford racing twin blade throttle body, 80mm pulley, roush CAI, and boost-a-pump.

I having issues with my O2 sensors and sparks plugs going bad. It seems to be happening every 1000 miles or so. Does anyone have any idea what could be causing issue? It will drive great, hit 650 RWHP with around 590 TQ on dyno.
Then after 1k miles or so, I get a surging problem.

Any ideas?
Phase 3 upgrade including CAI, Fuel pump voltage regulator, (648rwhp), 582 torque, Kooks LT headers with off road H pipe, Vossen CV3's, ID1000's, Steeda Heat Exchanger, BMR LCA's,relocation brackets, adjustable Panhard bar, Rear sway bar, Steeda Aluminum driveshaft, X-brace, Differential cover, torque box brace/frame rails, Shelby trans cooler, Mcleod RST clutch/lightweight steel flywheel w/SS clutch line, RP fluids, whiteline transmission bushing,MGW race spec short shifter,Ford racing twin 65mm throttle body, Pro Dyno tuned
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Old 02-01-2018, 10:10 AM   #2
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If you did upgrades & didn't re-tune the car, could be your problem..

" Chance favors the prepared mind "
* SOLD * 2011 776rwhp.......documented " 1 of 2 "
2014 - detuned to 780rwhp
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