Performance probs after fitting EGR blanking plates
2006 Audi A4 B7 2.0TDI
I wonder if anyone can help?
Yesterday, I had the EGR valve blanked off using two blanking plates.
The chap that did the work is a mate that works for Audi. Admittedly, he had not performed this mod before but obviously knows where everything is, etc. Anyway, he blanked off the EGR valve and I gave the inlet manifold a thorough clean.
Once the work was done, I drove off for a test drive. The engine warning light appears on the dash but I was half-expecting that, from having read all of the various threads about EGR blanking/delting.
The real concern for me is that the carís performance has taken a turn for the worse. The turbo doesnít kick in for a lot of the time when accelerating. It comes on now and again but it is intermittent. Iím not sure but I think the car may be going in and out of Ďlimp homeí mode.
I spoke with my mate about the problem and we think the light on the dash and the performance issue are related. He thinks it may have something to do with the MAF sensor but we arenít sure.
Iíve read on the threads about EGR blanking that you should also remove and block a hose vac that connects from the EGR valve to a solenoid. However, on my car I couldnít locate such a vac hose. The only vac hose I could find was connected to the turbo actuator front left of the engine cover. However, blocking this made no difference.
I am loathe to pay a tuning company money for diagnosing the problem and cancelling the dash light if some kind soul out there could perhaps advise further, preferably someone with an A4 B7 TDI.