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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > UK > N47 Issue



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      07-30-2024, 03:42 AM   #1
George89
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Drives: E90 LCI N47
Join Date: Jul 2024
Location: Germany

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N47 Issue

Hello.I have low boost under 2300 rpm and on slight acceleration have hesitations.Sure... without error code
When the car have low power the:
-MAF specified 30 kg/h
-MAF actual 50 kg/h...and that is too much flow throught MAF.
-Actual boost is lower that specified until reach aprox 2300 rpm...
-EGR pulse ratio 15%
Some times DME close the EGR 0% duty cycle and the car runs great without Issue MAF specified rise at 50 kg/h and actual same 50 kg/h,boost perfect.
The car have also DPF OFF.
The only thing i think... is EGR cooler clogged...
I have ista air mass test failed (Exhaust gas recirculation) but when DME close EGR test passed. 😅😅😅

Last edited by George89; 07-30-2024 at 03:53 AM..
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