this is my first tank after installing my DC Sports headers and i am very pleased. Not only is the sound and the power gain great, i was able to get about a +6mpg boost

i was not expecting that because i have been driving the box really hard, shifting sometimes at over 6000rpm.

so with heavy driving i went from my gas mileage being around 24 to 28 to this last tank being 30.453 very pleased.

 

my mileage stayed the same no matter how i drove... i even had a hot air intake...

now that i'm back to stock expect for the welded on cat back my mileage hasn't changed one bit... i'm fine with that and its cheaper for me...

 

hmm interesting lol

 

lol my dc header on my tc dropped my mpg lol. i get 270 miles per tank while my fiance gets 350+ on her stock tc.

 

header. not headerS. I4's have one header. sheesh


i'm not too knowledgeable with that stuff but part of me thinks your milage should go down due to increased power but part of me thinks it should go up due to increased airflow (which increases power). keep driving like that and you will get the milage of a hummer

 

yeah, i dropped it down...i dont get it over 3000 now except on the highway in 5th ill bring it up to 4000rpm. i want to see what kind of mileage i get out of this tank.

 

well i had to refill last night, i went 366 miles and filled the tank completely up, i put 11.091 gallons in there. that gave me 33mpg which is a good 5mpg more than i was getting before.