which is better for fuel mpg

04stroke · #1 (**permalink**) 10-31-2010, 07:48 PM

which gets better fuel mileage??? straight piped or with a muffler?

**PGreenSVT** · #2 (**permalink**) 10-31-2010, 08:38 PM

It doesn't make any significant difference. It's all about the sound.

**Raul@Stealth Automotive** · #3 (**permalink**) 10-31-2010, 08:40 PM

i agree.. you prob wont see a diff between either of them...

***armyguy209*** · #4 (**permalink**) 11-01-2010, 01:32 AM

Not much in fuel mileage but my vote is to ditch the muffler

Pthompson · #5 (**permalink**) 11-01-2010, 01:42 AM

worst for fuel is the Cat. Run it over and straight pipe that and your in bussiness.

04stroke · #6 (**permalink**) 11-01-2010, 04:36 AM

Ok yea I had straight pipe no Muffler but turns to many cops heads when I'm coming down the street so I put a mbrp Muffler on that I cut in half n welded together ...so my next question is do you make more boost on straight pipe? I know Turbo cars work that way didn't know if it was the same for diesels?

dereku · #7 (**permalink**) 11-01-2010, 04:44 AM

No scrap the cat. I got $125 for my from a local scrap yard.

Pthompson · #8 (**permalink**) 11-01-2010, 05:24 AM

Diesels and unleaded the same... The more in the more out the more on the ground. Lose the cat and get a high flow muffler and your doin good.

Paul

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