GrayGhost01GT

Does this combo drop ur gas mileage ? BBK 75MM C&L plenum

nystateofmind27

Nothing noticeable as far as i can tell. There shouldn't be much difference between different brands of tb's or plenums either.

JoeyD

I didn't notice any drop in Gas Mileage...
maybe like 1mpg? or 2? perhaps?
I do not pay attention to gas mileage that much tho.
it did help with throttle response and saw nice gains with it tho.

sandcracker21

why would it decrease your gas milage?

just because your letting in more air more efficiantly doesnt mean your loosing mpgs

HaV

Under normal driving any mods you make to your motor to make it more efficent with out increasing the rate of fuel added will improve gas mileage... If you do your full exhaust and intake you will easily improve your mileage... Your car breathes better and with less restriction making it more efficient.. the problem is if your modding it.. you aint gonna be keeping your foot of the pedal are ya?

stangc83

yeah but you kinda also lose gas mileage, due to you wanting to use that extra hp or wanting your new exhaust to sound louder so you stay in a lower gear

03sonicgt

Nothing not worth buying a tb/plenum combo, buy it today.