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Muffler or no muffler - does it affect power ?

1627 Views 4 Replies 5 Participants Last post by  Mr_Roboto
On my 93 7.3 idi - previous owner told me he didn't like the loudness of the engine so he took it to a muffler shop and put a good muffler on it. From what I've read on this forum I wonder if this would cause a drop in power??
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What I have found (with myself personally) is that the louder the exhaust is, the less useable power I have since I stay out of the throttle to keep the racket down. Also IMO it is harder to tune an engine when all you can hear is the exhaust and not the motor itself.

I wouldn't sweat the muffler, it's not like you can go out and buy a more restrictive muffler than what comes from the factory. The PO may have gotten the truck with a cheap aftermarket muffler or no muffler at all.
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