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BMW 3-Series (E90 E92) Forum
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Strange rail pressure bahavior after first WOTs
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05-16-2024, 11:06 AM | #1 |
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Strange rail pressure bahavior after first WOTs
Before changing high pressure pump i will try to ask if anybody has similar problem.
After start car, no mather if is cold,warm, stoped for 5minutes or.... First 3,4 WOT pulls droped rail pressure.. Then i can 100x WOT and hold min 1800psi... if i dont pull pedal to 100proc, pressure holds everytime. Very disapointing for me... It happens on every map i try, not on stg0 so much (there drop is to 1500psi not to 800 like 18, 19, 20, 21, 22psi boost target maps , MHD OTS, custom) Car is n54 FBO, custom small hybrids, 3,5bar tmap ..... try to do custom map with tuner Heres some logs from car remaps process > stg0 map stock with MHD installed >> https://datazap.me/u/cr4sh/log-17157...0&data=3-18-19 2x bad pulls then 1800psi and start working well > > https://datazap.me/u/cr4sh/log-17158...0&data=3-22-23 good pressure 23psi target > > https://datazap.me/u/cr4sh/log-17158...0&data=3-22-23 what can i try? No vakum leaks, injector index12, car run smooth in both causes, no error codes... |
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