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      12-20-2019, 04:58 PM   #194
Big Fabri
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Drives: Lamborghini Huracan
Join Date: Mar 2019
Location: Italy

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Originally Posted by Cannondale900 View Post
It's not the exhaust that produces the crackles and pops but instead the engine tune that squirts some fuel in to the cylinder on the cylinder's exhaust cycle. This unburnt fuel hits the hot exhaust gases and then ignites. I like the brrrp on the overrun when shifting gears on hard acceleration but I've grown to hate the crackles and pops on deceleration.
actually it is a combination of both. btw your are correct. the overun is mad by pulling timings and with a post injection.