Fuel and Boost problems with the A4

[MR.H]

I checked for engine codes today and produced: P2261 Boost Pressure Control Valve - Mechanical Malfunction
P310B Low Pressure Fuel Regulation Outside Specification

Then I took the car out for some data runs and logged some intriguing information:

0-100km/hr 16.02 seconds

Max Boost pressure 1930 mBar (27.9 psi) @ 4360 rpm with 59.6% boost being dumped (if I am translating the Waste gate Duty Cycle properly)

I am thinking fuel pump is out and it is causing the car to put up the boost to compensate.

What are your thoughts?

BTW, as far as I know it is not chipped but would not be surprised it it was some shitty one, and the car has AWE exhaust, and that is all the mods done to it.

[viziers]

You have a P310B which is the same as a P0089. That alone is going to possibly give you headaches for a long time!

Some light reading for ya:

http://www.audizine.com/forum/showthread.php/280245-Error-code-P0089?highlight=P0089




vizi

[yayjohnny]

You have a P310B which is the same as a P0089. That alone is going to possibly give you headaches for a long time!

I had P310B and P0299 right after I got my Stage 1 APR Tune. After I installed the New Revision D Diverter Valve, the codes have not come back yet...

[texasboy21]

I checked for engine codes today and produced: P2261 Boost Pressure Control Valve - Mechanical Malfunction
P310B Low Pressure Fuel Regulation Outside Specification

Then I took the car out for some data runs and logged some intriguing information:

0-100km/hr 16.02 seconds

Max Boost pressure 1930 mBar (27.9 psi) @ 4360 rpm with 59.6% boost being dumped (if I am translating the Waste gate Duty Cycle properly)

I am thinking fuel pump is out and it is causing the car to put up the boost to compensate.

What are your thoughts?

BTW, as far as I know it is not chipped but would not be surprised it it was some shitty one, and the car has AWE exhaust, and that is all the mods done to it.

You have to subtract your absolute pressure from the logs, which is about 950mbar. So you are more in the 15psi ballpark [up]

[MR.H]

orly?

What reason would that be? I am guessing it has something to do with atmospheric pressure? That was something like 15psi ish iirc

I am also realizing my 0-60 time isnt accurate, i may not have been WOT. gona do more logging today and do it more accurately.

thanks all for the help.