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Old 02-14-2004, 10:52 AM   #1
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Default No Mufflers.....

Just yesterday we finished taking off both mufflers on bonnytrek'* GTP. It is now running straight pipes with a cat and resonator. Its not that loud outside the car but inside it is. I can seriously say I think it has gotten slower. Is that possible? Or is the power just higher now.
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Old 02-14-2004, 10:56 AM   #2
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no back pressure?
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Old 02-14-2004, 11:06 AM   #3
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I know the backpressure is gone. I want to know what happened to the power though, and if it can have a huge impact on performance or not.
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Old 02-14-2004, 11:39 AM   #4
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A muffler is a pretty key part of a vehicles exhaust system. I would consider putting something back on. Once you remove a part of a system that is designed power will be lost.

The science behind it..I dunno, but put the muffler back on
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Old 02-14-2004, 12:11 PM   #5
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Quote:
Originally Posted by Jim W
The science behind it..I dunno
yeah i cant figure that one out either
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Old 02-14-2004, 12:40 PM   #6
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Well losing all that back pressure will definitely make you feel a loss in power, especially low-end. I would guess you should have more high end though. But cars are designed with mufflers in mind so taking them off, especially without a ton of mods, wouldn't help IMO.

Stock cars on the other hand don't need mufflers.
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Old 02-14-2004, 12:53 PM   #7
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Your engine MUST have a measured amount of Backpressure to provide a suitable amount of compression, which in turn produces torque..ie...power/hp at the wheels..
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Old 02-14-2004, 12:55 PM   #8
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Bingo. It'* a fine art, balancing low end torque and high end hp with an exhaust. That'* why most of us stick with stock sized piping, and performance mufflers. You gotta be running a TON of boost to make up for the difference.
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Old 02-14-2004, 12:56 PM   #9
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after my cat was gutted i loss all my low end and gained high end its kinda of a trade off.
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Old 02-14-2004, 01:53 PM   #10
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So then why do people with camaros or mustangs run cutouts with a seemingly increase in power??? Or do v8'* produce enough power that the backpressure is inconsequential.
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