Ford Mustang GT gen7 Pop & Bang in Korea

[YONGSEOK KIM]

performed a pop and bang tune on my Mustang GT. My car still has the stock GT exhaust system. I used HP Tuners, and the tuning was done only by adjusting the ignition timing, so there is no issue with the catalytic converter.

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[D/\rK•650]

Thank you for sharing, if i ever get to travel someday I'll definitely drop in.

 

[keithwalton]

No matter how you tune it the sound comes from combustion down the exhaust. Usually unburnt fuel hitting the cat. With heavily retarded timings this will still be the case.
It's not cat safe.
Most export specs have OPF's as well.

 

[YONGSEOK KIM]

No matter how you tune it the sound comes from combustion down the exhaust. Usually unburnt fuel hitting the cat. With heavily retarded timings this will still be the case.
It's not cat safe.
Most export specs have OPF's as well.

I understand the concern about the catalytic converter.
However, if this level were truly enough to damage the catalyst, then cars like the Hyundai Elantra N—which produce much more aggressive pop-and-bang sounds—would already have their catalytic converters destroyed.


Typically, the heat source that reaches the catalytic converter is around 900°C (1,650°F). If unburned fuel ignites inside the catalyst, temperatures can momentarily reach about 1,100°C (2,014°F). A brief spike in temperature like this does not necessarily cause damage. Catalytic converters usually fail due to heat accumulation over time, not a momentary heat event.


So, while excessively aggressive pop-and-bang setups can indeed cause problems due to sustained heat buildup, the level of pop sound I have set is not severe enough to create that kind of issue. Moreover, in my case the sound is produced primarily through ignition retard, not by adding extra fuel, which results in lower exhaust temperatures overall.

Thank you for your interest and concern.

 

[Paddles]

I understand the concern about the catalytic converter.
However, if this level were truly enough to damage the catalyst, then cars like the Hyundai Elantra N—which produce much more aggressive pop-and-bang sounds—would already have their catalytic converters destroyed.


Typically, the heat source that reaches the catalytic converter is around 900°C (1,650°F). If unburned fuel ignites inside the catalyst, temperatures can momentarily reach about 1,100°C (2,014°F). A brief spike in temperature like this does not necessarily cause damage. Catalytic converters usually fail due to heat accumulation over time, not a momentary heat event.


So, while excessively aggressive pop-and-bang setups can indeed cause problems due to sustained heat buildup, the level of pop sound I have set is not severe enough to create that kind of issue. Moreover, in my case the sound is produced primarily through ignition retard, not by adding extra fuel, which results in lower exhaust temperatures overall.

Thank you for your interest and concern.

Elantra Ns melting cats in N mode is not unheard of

 

[Will2]

Needs even more pops, maybe if you downshift at high RPM.

I really miss the 6th gen Camaro. Factory active exhaust would do long trains of pops when downshifting >3K RPM. If you coast downhill, the pops would continue seemingly indefinitely at the right RPM ~3-3.5K.

The closest I've gotten on S650 Mustangs is a long downhill twisty (CA-4 crossing the Sierra Nevada mountains) in ~2600RPM it will rhythmically burble/pop every ~1s if you're at the perfect RPM. But the Mustang's pops sound so much weaker than the Camaro's long diarrhea trains.

I want to be able to play the car like an instrument

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