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excursion, you mentioned the coolant temperature sender. I did have this replaced about 6 months ago as there was a fault stored relating to it. Can this really affect the power? Just recently the coolant warning light comes on every morning when I start up even though the bottle is topped up...

Back from Audi garage where the specialised technician didn't even know you could measure the boost with the VAGcom. " you can't measure the boost with the Vagcom you need to tap into one of the turbo pipes under the bonnet" I had to tell him how to do it!! His opinion was that the requested...

could a faulty PCV valve cause a loss of boost? Is this something that often goes. If my car is idling ok does this mean I don't have a leak? Cheers

What is the round thing in that picture? I don't think I've replaced that yet!!! I also noticed that pipe was oily on mine. I left it cos I didn't want to get dirty!

Have you ever had an overboost fault stored in the ECU? Something like maximum charge pressure exceeded.

AndyS3, I had the exact same thing with the rolling road. Did you get a plot of the rolling road figures? If so were the temperatures at which the test was done on the bottom? I have been told that if they are not the test is worthless as they are normalised to a certain temp so by entering a...

What are the symptons of a hose that has blown off or leaking? I am not making requested boost - could a hose leak or blown hose be the cause?

I had suffered an overboost before chipping (twice in 6 months or so). not sure of the fault code - max pressure exceeded I think - sporadic fault. This put me into limp mode (I think) but when the ecu was reset the car did not go back to how it was before and was not making the requested...

Is there any Vag-com owners out there in the Aberdeen area? I've been having major problems following an overboost and it would be great if I could meet up with someone who knows what they are talking about and doesn't just try to full me with a load of s$*t just to get rid of me. Otherwise...

I've just fitted the F type N75 (which is the replacement fo rthe C) and it still is running as it did before the remap. The car has new dump valve, new MAF and has had every type of N75 valve under the sun tested and always runs just as it did before the remap.(although runs best with the J...

I've recently ordered a N75 boost controller valve as I've been having problems following a remap. (see post boost problems-follwing remap) I have a J valve on at present and wish to go back to the original. I ordered the original C valve part no 034906283C. ie. I just swapped the J for C...

I am waiting for one from the dealer who say it will take 7-10 days. But if the original C valve was faulty and caused the overboost why is it not running ok with the ECU reset as it did before the overboost. I would expect it to run good again untill it overboosted again (caused by the faulty...

Cheers, I hope so, I've been using the UK TT forum till I found this one without much joy.

I have recently had an APR chip installed along with a new MAF and dump valve. It went great for a week then went totally flat - slower than before I had the chip installed. It had an overboost fault registered - something it had done a couple of times before the remap. He said the car had...