Just got a magnaflow...

[road1will]

...and saw nearly a 2.5mpg increase over my last fuel tank.

Anyone else noticed this big of a difference after going with an aftermarket exhaust??

 

[JennaBear]

You going by hand calculations or DIC? Variance in driving?

 

[road1will]

hand calculations....DIC is showing nearly 3mpg increase.

My driving style is exactly the same as before.

 

[JennaBear]

Quite possible that you are having gains by allowing more air flow out the tailend, 2.5MPG is surprising! Either way great!

 

[DRTYH0]

Did you get a cat back or just the muffler? Either way congrats...

 

[oomindwarpoo]

Word, im buying mine next week.

 

[boostaholic]

Damn thats crazy! I picked up about 1mpg but your stock muffler could have been gnarly restrictive.

 

[RenegadeTahoe]

Damn thats crazy! I picked up about 1mpg but your stock muffler could have been gnarly restrictive.

I think I picked up a good 1.5-2 HWY MPG, but... I can't tell with city...

 

[Rollin Thunder]

AWSOME!!!!

need to change mine. I want more rumble. I want people to know im coming when im 3 miles away. LOL. Yet i dont want a drone. hard to find I know, i know.

 

[boostaholic]

Electric cutout is the only way to do that, not worth it IMO.

 

[ghostface]

not to jack ur thread.

which is better, the magnaflow or flowmaster? i want a loud rumbly exhaust. i was so used to my old car. 3" turboback, no cat or mufflers.

http://www.youtube.com/watch?v=qfgDBcLL1io

 

[Gordo]

With mine I ONLY got about 1-1/2 mpg increase I know that when i ck the onboard computer i reset the mpg on the highway so I looked like alot more originaly i though it was like 5 mpg but after about one mos it settled in and I only noticed about 1 1/2 mpg increase

 

[road1will]

With mine I ONLY got about 1-1/2 mpg increase I know that when i ck the onboard computer i reset the mpg on the highway so I looked like alot more originaly i though it was like 5 mpg but after about one mos it settled in and I only noticed about 1 1/2 mpg increase

I can barely decifer what you're trying to say, but I think your saying that according to your DIC you saw 5mpg increase but by hand you calculated a 1.5 mpg increase?

Either way, that doesn't affect me. I am not using DIC calculations to determine mpg.

 

[Rollin Thunder]

I can barely decifer what you're trying to say, but I think your saying that according to your DIC you saw 5mpg increase but by hand you calculated a 1.5 mpg increase?

Either way, that doesn't affect me. I am not using DIC calculations to determine mpg.

With mine I ONLY got about 1-1/2 mpg increase. I know that when I check the onboard computer I reset the mpg on the highway. So it lookes like alot more. Originally I thought it was like 5 mpg but after about one month it settled in, I only noticed about 1 1/2 mpg increase overall

Their. I decoded it for you (as best i could) :smilielol:

 

[ugachs24]

I can barely decifer what you're trying to say, but I think your saying that according to your DIC you saw 5mpg increase but by hand you calculated a 1.5 mpg increase?

Either way, that doesn't affect me. I am not using DIC calculations to determine mpg.

Is your new exhaust loud inside your truck?

I want something quiet on the inside but a deep rumble out, wishful thinking right? haha

 

[tybardy]

man thats quite an increase... your old muffler must have been clogged something fierce...