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EGR problems after Obx V2 Headers install PO403 HELP ASAP

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Old 01-24-2014, 02:32 PM
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EGR problems after Obx V2 Headers install PO403 HELP ASAP

I have a 2000 Maxima DE-K and I did a full obx header install with full exhaust and I deleted the EGR hoping the car will run good but no I threw a. Code I replaced the entire MAF and Map sensors car still I'm limp mode won't rev past 3500 but when I turn the car off and turn it back on it runs perfect is there anyway to run the EGR with these headers????? Need help ASAP I'm not spending 1 more dollar until I can figure this out let me know please if anybody has done obx v2s on a 2000 what did u do about the EGR I can't be the only one....
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Old 01-24-2014, 04:46 PM
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What code are you getting? I wouldn't throw parts at it without knowing what the code(s) are. Generally, eliminating the EGR won't cause any drive-ability issues.
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Old 01-24-2014, 08:19 PM
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Originally Posted by Scottwax
What code are you getting? I wouldn't throw parts at it without knowing what the code(s) are. Generally, eliminating the EGR won't cause any drive-ability issues.
I have PO403 I do not have the EGR hooked up at all not even the EGR temp sensor u think if I weld a bung into the rear manifold and plug the sensor up it will work?
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Old 01-25-2014, 08:27 PM
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Originally Posted by David3267
I have PO403 I do not have the EGR hooked up at all not even the EGR temp sensor u think if I weld a bung into the rear manifold and plug the sensor up it will work?
Not sure. Where was it originally?

FWIW, I plugged the EGR on my son's Camry because his car was stalling at lights. Now it drives great. Plugged it in my old Accord, it was causing a stumble on low speed acceleration (passages in the manifold were clogged with carbon) and it cured the stumble so I can't see how not having an EGR would put the car in limp home. Could be the MAF failed and its just a coincidence on the timing.
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Old 01-27-2014, 08:43 AM
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Originally Posted by Scottwax
Not sure. Where was it originally?

FWIW, I plugged the EGR on my son's Camry because his car was stalling at lights. Now it drives great. Plugged it in my old Accord, it was causing a stumble on low speed acceleration (passages in the manifold were clogged with carbon) and it cured the stumble so I can't see how not having an EGR would put the car in limp home. Could be the MAF failed and its just a coincidence on the timing.
i replaced the MAF with a brand new one still wont rev past 3500 unless i turn the car off and turn it back on its stupid... i do not have any EGR components connected at all the EGR valve and temperature sensor Are all deleted and the egr is blocked off so there is enough intake pressue i am going to try to reconnect the valve and the temp sensor to see if the computer will pick it up if not ill have to get a 01 5 speed ECU and reprogram the NATS.... which i dont want to do at all......
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