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- - fuel economy question (https://67-72chevytrucks.com/vboard/showthread.php?t=63573)

messed up c-10

08-05-2003 09:51 PM

fuel economy question

Will changing my exhaust from the Purple Hornies with the 3" turndowns under the cab to a system with an x-pipe and aerochambers that is 2 1/2" exiting in front of the rear wheels help my fuel economy any on my 305?

Physh1

08-05-2003 10:50 PM

Theoritically, yes it can if you can keep your foot outta the throttle with the extra power you may see. Anything that can even out and smooth exhaust pulses will generally help your mpg a bit.

Cameron

gldevall

08-06-2003 08:43 AM

What kind of mileage are you getting now? I'm getting about 15.5 MPG with my set up and that's not getting on it too much.

messed up c-10

08-06-2003 09:07 AM

If I don't mash the pedal down alot I can get around 12.

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