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BMW 3-Series (E90 E92) Forum
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overboost + p0420 code
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| 09-13-2011, 09:27 AM | #1 |
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overboost + p0420 code
After installing a mr5 box and recharging a k&n filter, the car started boosting easily, like if I just tap the pedal the boost would go up very quick, at WOT it would spike up to 20 psi , on map 1 or 2 on jb4 and then later on I got a p0420 code, what could be the problem? please help, thanks ! maybe it was a coincidence that it all happened at the same time, idk any suggestions will be welcome thanks !
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| 09-13-2011, 10:06 AM | #3 | |
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| 09-13-2011, 10:48 AM | #5 |
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2F8F Accelerator pedal module and brake pedal, plausibility
29F4 Catalytic converter conversion 29F5 Catalytic converter conversion 2 30FE Boost over target 3100 low boost mode engaged -- CEL displayed |
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| 09-13-2011, 10:50 AM | #6 | |
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29F4 Catalytic converter conversion 29F5 Catalytic converter conversion 2 30FE Boost over target 3100 low boost mode engaged -- CEL displayed |
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| 09-13-2011, 11:24 AM | #7 |
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my max boost set 16 psi, but when i do wot with 2th gear fuel gauge shows 17-18 psi wonder is it normal
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| 09-13-2011, 12:56 PM | #9 | |
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07 335i AT - MOTIV 750 - MHD E85 BMS flash - BMS PI - JB4G5 - Okada Coils - NGK 5992 Plugs - Helix IC - Snow Stg. 3 - Stett CP - Custom midpipes with 100 HJS Cats - Bastuck Quad - PSS10 - QUAIFE LSD - BMS OCC - Forge DVs - AR OC - ALCON BBK - M3 Chassi - Dinan CP - Velocity M rear Toe arms - Advan RZ-DF - LUX H8 - Level 10 AT upgrade
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