Bolt-ons and MPG

[mytcownzurcivic]

I am thinking about getting some MMW Headers, and wanted to know if there is any reason my mpg will suffer from this instal. Also wanted to say that my first highway experience with my K&N SRI delivered HIGHER mpg than stock. I went 230 miles on half a tank. Half of that was WITH AC. Anyways, would headers(4-2-1) and s-pipe do damage to my mpg???

Thanks,
-K-

[TBITB]

where u at that ur riding with A/C? still wakin up to 30s here in Jersey!

exhaust components shouldnt change mpg either way.

[mytcownzurcivic]

Texas weather sucks...

[Mengsta]

Well it shouldnt change mpg, but it does have a slight impact. Headers, especially has a slight more effect on A/F ratios then simply changing the midpipe or axleback. For the most part headers would give you a bit less of MPG but most people at my weekly meets say it doesnt, Hey it could be my pulley that makes me lose mpg.

[navylife59]

Originally Posted by mytcownzurcivic

Texas weather sucks...

Try New Orleans....

When I changed the header and s-pipe, I noticed a slightly better MPG on my long hauls to Texas.

[mytcownzurcivic]

lol.... I'm about to move to Glendale AZ... imagine running a car hard in THAT heat!

So, navylife59, do you have the MMW combo(s-pipe and 4-2-1 header)? if so, how long will that material last, cause I know other things like mufflers have to be replaced after awhile...

[TBITB]

[quote=navylife59;15568]Try New Orleans....QUOTE]

try Atlantic City... it's raining here now ON MY BIRTHDAY couldn't even get my free car wash for it being my birthday either!

[Mengsta]

WEll mufflers Really dont need to be replaced until like 150+ miles depending on how/where u drive. And that is either because of physical damage. When the material inside mufflers die out, it usually just gets a bit louder. Im assuming headers would be the same, though after 2k miles of my MMW header, it is already spotting and looks pretty ugly.

[Vmix06]

i dont think bolt ons have that much of a MPG change but if u piggy back it u can change it to the way u want it

[navylife59]

Originally Posted by mytcownzurcivic

lol.... I'm about to move to Glendale AZ... imagine running a car hard in THAT heat!

So, navylife59, do you have the MMW combo(s-pipe and 4-2-1 header)? if so, how long will that material last, cause I know other things like mufflers have to be replaced after awhile...

DC Sports header (4-1) custom 2.5" SS Jotech built exhaust. (2) 12" Topspeed can resonators and HKS Hi-Power muffler. That is it.

[Mengsta]

Yeah but a piggy back is just going to add up to more things i blow on my car, eh i guess its worth it though, my Ninja can wait.