[armend195]

N47

Hello, i’ve had a erratic MAF issue and went through a lot to fix it but no change in the end. Then come to se that MAF output is related to the fuel rail pressure dropping as you can see in images i’ve attached.

Fuel pressure issue? Fuel pressure should not be moving up and down it should be stable. I think its temp related. As in first pic car is just started at 15 degree celsius, and after a few mins drive the lines become more detailed (second photo). And as see it i have been trying to fix the MAF as i thought it was MAF issue but it was not. Seems to be fuel related. The colder the car is, the more boost/push it has on low throttle. If i floor it in both cold/warm its the same no difference. Issue is only on light throttle. Do you guys reckon its the fuel rail pressure sensor? Fuel rail pressure valve? Fuel quantity valve on the pump? It uses more fuel daily driving. No codes are present. Car is lumpy and hesitant. Thank you for any input