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[QUOTE=SS71SS24;11520014]I'm a very senior kid and love that racket. If only the muscle cars I owned in the 70s did that runs through my mind. I think the manual trans equipped do it more.[/QUOTE]
You’re correct. Manual cars tend to exhibit it more because they incorporate clutch-triggered fuel cutoff in addition to standard deceleration fuel cutoff (DFCO).
When you lift off the throttle, DFCO shuts off injector pulse during overrun. In a manual, clutch engagement/disengagement adds another layer—momentarily interrupting load and fueling—which can create more abrupt transitions when fuel is reintroduced. That sharper on/off fueling behavior, combined with ignition timing and residual exhaust gases, is what tends to produce the more pronounced pops and crackles compared to the automatics.
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