Does anyone notice their gas mileage decrease with the new muffler?
Does anyone notice their gas mileage decrease with the new muffler?
Yesterday I put in a new muffler Magnaflow 12158 and it sound great. The only problem is I think it spends more gas now. Does anyone notice their gas milage go down after installing a new muffler? This would suck especially now with the gas priced right below $5 a gallon.
Re: Does anyone notice their gas milage decrease with the new muffler?
Are you sure you're not stomping on the gas pedal alot more now just to hear that sweet sound?
I know that would be my problem if I had an upgraded exhaust.
I've heard that it takes a while for a new muffler to settle (break in) which may be why the extra use of gas. Hopefully, someone who has upgraded their exhaust can attest to this.
I know that would be my problem if I had an upgraded exhaust.
I've heard that it takes a while for a new muffler to settle (break in) which may be why the extra use of gas. Hopefully, someone who has upgraded their exhaust can attest to this.
www.CustomCrossfire.com
Re: Does anyone notice their gas milage decrease with the new muffler?
Originally Posted by MannyTwoTwo
Are you sure you're not stomping on the gas pedal alot more now just to hear that sweet sound?
I know that would be my problem if I had an upgraded exhaust.
I know that would be my problem if I had an upgraded exhaust.
Re: Does anyone notice their gas milage decrease with the new muffler?
Installed the same muffler and am actually gettin 1mpg more than with the stock muffler, which doesn't make sense cuz I find myself in the throttle more just to hear that V6 groan !
I do try to keep it above 1800 rpm tho it sets up a harmonic inside the car that rivials the sub woofers behind the seats ! Other than that am well satisfied with the exhaust note.
Just my Dos Centavos !
I do try to keep it above 1800 rpm tho it sets up a harmonic inside the car that rivials the sub woofers behind the seats ! Other than that am well satisfied with the exhaust note.
Just my Dos Centavos !
Re: Does anyone notice their gas milage decrease with the new muffler?
I'm thinking of removing the back cats as well and was wondering if it really makes a difference in the sound and what is a decent cost for the removal if I take it to a shop.
Originally Posted by Mimi05SRT6
I agree. I removed my rear cats and I think it slightly went up, not positive but it just appears to have.
Re: Does anyone notice their gas milage decrease with the new muffler?
Originally Posted by banej
Yesterday I put in a new muffler Magnaflow 12158 and it sound great. The only problem is I think it spends more gas now. Does anyone notice their gas milage go down after installing a new muffler? This would suck especially now with the gas priced right below $5 a gallon.
Re: Does anyone notice their gas milage decrease with the new muffler?
Modifying your exhaust to cause your engine to breath easier, will do nothing but improve your performance, (and if you keep your foot out of it) increase your gas mileage.
You may lose a small amount of torque, but the engine should wind up faster and more than make up for it.
You may lose a small amount of torque, but the engine should wind up faster and more than make up for it.
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Re: Does anyone notice their gas milage decrease with the new muffler?
Originally Posted by banej
Yesterday I put in a new muffler Magnaflow 12158 and it sound great. The only problem is I think it spends more gas now. Does anyone notice their gas milage go down after installing a new muffler? This would suck especially now with the gas priced right below $5 a gallon.
depending on my driving
Re: Does anyone notice their gas milage decrease with the new muffler?
I found that the first tank was terrible for gas mileage, but I did have my foot in it, A LOT. lol After that, it slowly came up with each tank until it finally settled up a few points, just in time to install the sprint booster to put it back to where it was. lol
Re: Does anyone notice their gas mileage decrease with the new muffler?
Originally Posted by ivo 1
ok please explain what removing the rear cats will do to the xfire? i have a 2000 mustang gt full race bassanni exhaust n it sounds bad a$$., but on the x will it improve the sound with the stock muffler?
I had the rear cats removed last week and it sounds sweeeeet. Just be ready to go through a tank of gas much faster at first.
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Re: Does anyone notice their gas mileage decrease with the new muffler?
i just logged 29.2mpg today on my fillup. i've been doing alot of tire spinning and give it all it has take offs over the past week since my stepson is visiting and i'm showing off. i have now doubt i could have broke 31 not hot rodding. my first take i dropped to 26mpg. i have an aero turbine 2.5" muffler and a home made cold air setup.
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