Pontiac: Running engine without mufflers

 

Very annoyed people.
 

Are you including cat. conv.?

What bonneville said. Also your local noise pollution laws may not allow it.
depending on where the pipe is cut, you could get back pressure.

"GT Grand Prix 00" <com> wrote in message
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Get? Lose backpressure is more like it. Backfiring can result if loss is
severe enough.
GW

clevere wrote:
 

GT Grand Prix 00 wrote: 

Depends on pipe length. If the pipes are short you will need to
prevent too rapid valve cooldown on shutdown.

Er ... To short a pipe causes pop - pop when decelerating.

"Geoff Welsh" <net> wrote in message
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it. 

Yes, from lack of backpressure.
Very high flow mufflers do the same.
GW
(whose GTO goes snap-crackle-pop, with it's Dynomax set-up)


clevere wrote:
 

"GT Grand Prix 00" <com> wrote in message
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The biggest problem would be burnt exhaust valves all engines have a
certain amount of backpressure engineered into their run characteristics.

Jim.J