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Old 12-30-2008, 06:15 AM
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Muffler delete=bad mpg?

Hi guys,did alot of searching old posts and most are saying this leads to poor mpgs.Does this affect the mpgs and why?My mods are MBRP 4 inch/AFE stage 2/and a programmer?Please help ready to buy delete pipe soon..
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Old 12-30-2008, 06:17 AM
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It may lead to worse MPG's at first because you are too busy hammering on it to hear the exhaust. but when and if you get over that phase the mpg's will increase
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Old 12-30-2008, 06:32 AM
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...nicely put Dave, agree!
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Old 12-30-2008, 06:33 AM
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I thought so too. I havent had a muffler for 6 months and Im still not quite over that phase
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Old 12-30-2008, 06:36 AM
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Quote:
Originally Posted by Dave View Post
I thought so too. I havent had a muffler for 6 months and Im still not quite over that phase
amen to that i am with you all the way
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Old 12-30-2008, 12:50 PM
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Is the sound that different? I have the ATS 4" and was considering removing the muffler but was not sure what it would do.
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Old 12-30-2008, 12:58 PM
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Oh ya it's different. It sounds awesome with out a muffler!!!
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Old 12-30-2008, 02:34 PM
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I can't imagine why it would make your mileage worse... other then the foot goes to the floor more often ..
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Old 12-30-2008, 06:37 PM
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Originally Posted by Smitty02 View Post
Is the sound that different? I have the ATS 4" and was considering removing the muffler but was not sure what it would do.
When the ebpv starts to do it's thing when it's cold out it might annoy you w/no muffler...It kind of bugs me sometimes, but just more reason to gut it or unplug it.
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Old 12-31-2008, 08:42 AM
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Is there a slight bit of backpressure that the muffler is creating? Is it beneficial to some degree? I'm thinking I read something about a bit of backpressure being needed to help the turbo spool at lower RPM's... I know there's a whole other discussion that's already taken place over the proper size of downpipe, 3.5, 4"...
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