xrt Member 160 Member For: 16y 8m 10d Posted 13/10/14 03:43 AM Share Posted 13/10/14 03:43 AM Interested to know what causes the large amount of exhaust crackle on these engines.I usually like it on other cars, every coyote ive heard including mine sounds so poppy and tinny on deceleration its just not a nice sound.One or two crackles is nice, but coyotes seem to do a couple a second. Mines just a cat back but ive heard cars with full systems the same.Also on my standard tune it does it alot less.Would be interested to know. Cheers Link to comment Share on other sites More sharing options...
discostig Manual mode ________________________ All day, erryday Donating Members 13,798 Member For: 17y 3m 7d Gender: Male Location: Probably above atmospheric pressure Posted 13/10/14 04:37 AM Share Posted 13/10/14 04:37 AM Isn't crackle excess fuel igniting when the exhaust valves are open or something?I'd especially think it's tune related as you point out it does it more on your after market tune. Could be turned down again in the tune? Link to comment Share on other sites More sharing options...
arronm Dropping a turd Gold Donating Members 9,520 Member For: 17y 4m 4d Gender: Male Location: Perth Posted 13/10/14 04:56 AM Share Posted 13/10/14 04:56 AM Rice bubbles Link to comment Share on other sites More sharing options...
JVK Silver Donating Members 751 Member For: 19y 2m 13d Gender: Male Location: North West Hot Hell,VIC Posted 13/10/14 05:40 AM Share Posted 13/10/14 05:40 AM Snap,crackle,Pop! Link to comment Share on other sites More sharing options...
k31th less WHY; more WOT Site Developer 29,277 Member For: 16y 10m 21d Gender: Male Location: Melbourne Posted 13/10/14 05:42 AM Share Posted 13/10/14 05:42 AM It's 99% to do with airflow, which is basically a combination of a lot of factors, some of which are: the order the pistons fire in, the size/diameter of the exhaust, the restrictions in the exhaust, places where the exhaust flow meets other exhaust flow, engine revs etc.The stock exhaust sounds tinny, in my opinion. Aftermarket exhausts usually fix the the tinny/rattly sound and leave a nice burble. Link to comment Share on other sites More sharing options...
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