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Mel
by "muffler" do you mean....um... well, a muffler, or do you mean the entire
exhaust system won't be present? A header without a muffler would be okay,
but I wouldn't let one run for long if there's no exhaust at all present...
Backpressure(or lack of) isn't going to be the problem, but the tendancy for
ambient(cool) air to cause damage to hot exhaust valves is real if you have
no exhaust at all..
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Mel
"Joey Tribiani" <Jo...@yahoo.com> wrote in message
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