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- Doug
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- Wildtrak
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- #1
Question relating to exhaust note and it's evolution as a contribution to a vehicle's "soul".
As background, for decades, the fart can exhaust was the young, broke, half-hearted, tuner kid's weapon of choice that said, "Yeah, I'm young and I am cool...you ARE NOT." For them, leaving an echoing sea of irritating fart can sound in their wake was maybe more important than actually improving their 16 second, 0-60 mph time. Hum....now that I think about it, maybe the goal was to DECREASE the 0-60 time such that surrounding ears would remain awash in that irritating sound for a much longer duration?
Don't get me wrong, I love the sound of a well tuned, high HP WRX or Lancer or Skyline or Civic or Celica and would love to own one. A few years ago, I myself super charged a manual transmission Acura TSX and put a Fujitsubo exhaust on it that came directly from the land of the rising sun. It sounded awesome and had lots of soul. But that is not the "fart can" sound I speak of. I think most of you know what I mean. And it not just Japanese tuner cars, plenty of the punk BMW tuner crew employ this loud for the sake of being loud exhaust approach, too.
BUT, this long standing approach to coolness may have morphed. NOW, it would seem "cool" is an engine tune where the injectors do not shut off for some grossly excessive amount of time after coming off throttle (if at all), thus dumping a massive amount of raw, unburned fuel into the exhaust manifold where it eventually reaches a level of volatility so as to donate in a string of incredibly violent and massive backfires. Each of these backfire events are likely powerful enough to blow any amount of baffling or packing that MIGHT haven once existed in the cheap ass fart can exhaust.
Has any one else noticed this phenomenon? Is this a trend or am I just lucky because I live a few blocks from a local Japanese car tuner, and also live on a hill that inspires a lot of engine compression braking? I have read about some version of this technique used to help with cooling exhaust valves in race applications, but what I have been experiencing is NOT THAT. The cool little popping backfires on decel can even be pleasing to the ear. My Husky SM610 did it and my H-D 103 cu in tune even has a very slight bit of it and it makes me smile. But the backfires I'm asking about are full on window rattling, dog terrifying, araul assaults. Like M-80 or .50 BMG quality BOOMS. My German Shepherd gets SOOO SCARED it scares the piss INTO her, not out! She won't go out to pee for many, many hours after one of these jokers goes by.
Is this a "thing"? It seems to have become prevalent over the last 18 months or so. WA state also did away with bi-annual emissions testing in favor of requiring new cars sales to be CA emissions compliant. I'm guessing that was a significant contributing factor because these fuel/air bomb BOOMS would NOT have passed emissions!
As background, for decades, the fart can exhaust was the young, broke, half-hearted, tuner kid's weapon of choice that said, "Yeah, I'm young and I am cool...you ARE NOT." For them, leaving an echoing sea of irritating fart can sound in their wake was maybe more important than actually improving their 16 second, 0-60 mph time. Hum....now that I think about it, maybe the goal was to DECREASE the 0-60 time such that surrounding ears would remain awash in that irritating sound for a much longer duration?
Don't get me wrong, I love the sound of a well tuned, high HP WRX or Lancer or Skyline or Civic or Celica and would love to own one. A few years ago, I myself super charged a manual transmission Acura TSX and put a Fujitsubo exhaust on it that came directly from the land of the rising sun. It sounded awesome and had lots of soul. But that is not the "fart can" sound I speak of. I think most of you know what I mean. And it not just Japanese tuner cars, plenty of the punk BMW tuner crew employ this loud for the sake of being loud exhaust approach, too.
BUT, this long standing approach to coolness may have morphed. NOW, it would seem "cool" is an engine tune where the injectors do not shut off for some grossly excessive amount of time after coming off throttle (if at all), thus dumping a massive amount of raw, unburned fuel into the exhaust manifold where it eventually reaches a level of volatility so as to donate in a string of incredibly violent and massive backfires. Each of these backfire events are likely powerful enough to blow any amount of baffling or packing that MIGHT haven once existed in the cheap ass fart can exhaust.
Has any one else noticed this phenomenon? Is this a trend or am I just lucky because I live a few blocks from a local Japanese car tuner, and also live on a hill that inspires a lot of engine compression braking? I have read about some version of this technique used to help with cooling exhaust valves in race applications, but what I have been experiencing is NOT THAT. The cool little popping backfires on decel can even be pleasing to the ear. My Husky SM610 did it and my H-D 103 cu in tune even has a very slight bit of it and it makes me smile. But the backfires I'm asking about are full on window rattling, dog terrifying, araul assaults. Like M-80 or .50 BMG quality BOOMS. My German Shepherd gets SOOO SCARED it scares the piss INTO her, not out! She won't go out to pee for many, many hours after one of these jokers goes by.
Is this a "thing"? It seems to have become prevalent over the last 18 months or so. WA state also did away with bi-annual emissions testing in favor of requiring new cars sales to be CA emissions compliant. I'm guessing that was a significant contributing factor because these fuel/air bomb BOOMS would NOT have passed emissions!
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I love my Bronco and the time I spend in it, so I'm in no rush to get my drive over with. Go ahead and hammer on your POS Hyundai Elantra...I see you at the next stop light in a block and a half.....then the next....and the next....
