Its a valve on the front of rocker cover that takes breathers from block and inlet manifold and has a diaphragm in it to alow them all to breath, seems if diaphragm breaks air leaks straight to inlet causing idle to fluctuate
Cant seem to find any leaks but when I turn it off the circular plastic bit on front of rocker cover hisses away for a bit maybe 15 seconds it has a small hole that is meant to be there that's where air is coming from
My s3 started idling weird tonight i drove about 8 miles and then was out car talking to someone then jumped in the turn round and noticed revs dropped down really slow then changing gear was getting backfire once home i took it out of gear and let it idle and its fluctuating between 2000 rpm...
i was told its not officially launched but in stock now contact revo and get info from them, i think it does look finished off better and also wonder what the pipe meterial is for heat soak air duct looks better from front panel too from original air intake duct rather than just behind headlight...
Heard today revo is about to launch its new cold air intake its dearer than a itg maxogen but performs better seemingly after alot of rolling road development. I wouldnt expect nothing less mind you as there stage 2 plus remap needs a decent air intake. seemingly around £350 plus vat
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