Hi Guys, I’m having a bit of an ongoing issue with my car, it’s been into the dealer 3 times. First time it was suggested I change my spark plugs and see what that did, not covered by warranty. I wasn’t very happy with that outcome and sent it back in, they did a fuel management software update which didn’t resolve the issue and has since been in again where I’ve had to pay for new spark plugs. The issue started at about 15,000 miles, spark plugs aren’t recommended to be changed until 40k. I’m on 17,500 miles now and it’s the same, if anything worse. No fault codes stored, drives faultlessly but can’t comment on whether it’s making this noise while driving or not as I can only hear at idle. I’ve noticed the engine when it is making this noise is jolting pretty much in sync with the louder noises the exhaust makes. Can feel it through the the car when sat in traffic! Audi have refused to look at it any further as god knows how but they have discovered my exhaust has had the PCW Mod so they have wiped their hands of it, until it has a standard exhaust fitted. The exhaust was fitted in July last year (8500 miles), absolutely no issues between then and around February when I noticed this first of all. If it did it from day 1, the exhaust wouldn’t be on there. Coil packs came in at £47 each, would rather not replace those just on a whim... It’s booked in with my independent on Saturday but I can see this labour totally running away with itself as one day it does it terrible, the next it’s silent. I am hoping to gather some knowledge/experience from you friendly bunch. First clip below is shortly after it began in February, second is from a couple of days ago when it was the worst it has ever been one after another but still no fault.. argh! It can happen at any point, it happens if left idling when cold, the other day started up with the oil temp at about 60 degrees and it was doing it, but mainly arises after a drive whatever the kind. Have had assistance out when it was really bad, didn’t happen at all. One things for sure it definitely isn’t right, sounds really rough. Thanks in advance, Matt.