[geeuk]

Hi,

I have a N54 335i, It's running rough,the idle is bad and also theres strong fuel smell as if the fuelling ratio is messed up. I changed the HPFP with an new "Aftermarket Pump".

There are no error codes ista+ but the car running rough.

I have the INPA results, someone can tell me if the replaced HPFP is bad?

Can a boost leak that causes the idle and loss power from the car?

I also checked the mosfets on the ecu but the mosfet issue was mainly on msd80 as this car has msd81 so luck there.

The INPA readings showing okay for Low Pressure but for the High Pressue it drops down significantly I thought it was suppose to be steady around 200.000 ?

EDIT: My next move is to change the low pressue and high pressue sensors?
Also run a task with ISTA+ and it checked the high pressure pump told me its running at 200psi and said it's okay.


Youtube Video of the reading is here:

Thanks All
Gee