mate, take it somewhere reputable, as by the sound of things you used you local backstreet pikey garage to do it...
Jim, thats the whole point , it was somewhere reputable, they have a good rep on here
, hense why I was willing to pay what I consider high prices for the setup. I wont be going back...
Mark, as it only pops when the throttle is shut on overrun will this be the idle fuelling thats wrong, i.e. the allen key on the KE unit as opposed to the on boost fuelling which is set by EMFPR adjustment?