VRS Very Poor MPG

[vRS_WRC]

I'll let you all know how I get on when I phone the dealer on Monday. :-)

[vRS_WRC]

Just spoke to the dealer and they are going to change all 4 tommorrow (time to put the old one back in) looks like I will have a spare :-)

Result, I will see how the judder and the MPG is once they have been changed.

[vRS_WRC]

Right got all 4 changed for R versions and the judder low down is still there ARRGH. Any suggestions on how to troubleshoot this further?

From my logs the MAF looks fine, There are not faults logged in VAGCom, are there further message blocks which could be run to log readings form other sensor that could be interpreted by someone on here.

It would be great if I could get this stutter/judder low down resolved.

[David 8]

just a thought but have you tried cleaning the throttle body

excuse me if this has been suggested or done i am skimming this thread at the moment

[vRS_WRC]

Right would like to get to the bottom of this issue now,

What would your guys suggest logging to try and find the fault

So far I am going to relog

020 (for the MAF readings)

What else do I need to log to get readings for the other sensors that might be causing this issue?

Can you log the AIT? DV and N75 operation? and from the logs determain if it is working ok?

There is still a judder/stutter when accelerating low down in the rev range.

[David 8]

have you done the throttle body clean

[vRS_WRC]

I have cleaned the TB but not replaced the paper gasket, it looked ok.

I will pop to a vag dealer and pick one up and swap it, do you think this is the problem?

[David 8]

di dyou do the re alignment on the TB when you refitted it

i.e. open bonnet switch ignition wait for whine /beep from TB then wait thirty seconds start drive off

[vRS_WRC]

I did the TB Adaptation via vag com is that the same thing?

[David 8]

it sure is

Have you checked all pipes and hoses

I'm clutching at straws here really tbh