Gas mileage?

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Apr 2, 2005 | 01:19 AM

#1

badass_f-150

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Gas mileage?

My 95 ford f-150 with an inline 6 cylinder came with 2 stock cats. I cut one of them off and put a flowmaster on it. It gave me worse gas mileage but then I reset the computer and got it back to normal. I want to cut the last cut off...hollow it out..then put it back on....but ive heard it will give me bad gas mileage that will stay bad..is this true?...can I fix that if so?

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Apr 2, 2005 | 04:03 PM

#2

xallxforxchristx

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From: Arlington, Texas

hmm...I'm not quite positive, but I'd think it might increase the mileage due to less restriction. Only think that I think might trouble you would be that you might throw a code or two...don't know for sure though.

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Apr 2, 2005 | 05:25 PM

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kens64

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From: Rio Rancho USA

Dont just hollow it out. Weld a piece of exhaust pipe inside it the size of the exhaust so flow stays good. Leaving a hollow chanber will do nothing but disrupt flow.

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Apr 3, 2005 | 05:31 PM

#4

Saurian

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From: Centerville, Iowa

Yes. Mileage will improve. No, you won't have any problems as long as it is done properly. If you don't dink with the O2 sensor, you'll be fine.

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Apr 3, 2005 | 06:58 PM

#5

badass_f-150

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Being done properly means welding a peice of pipe the same size as my exhaust through the cat is this correct?

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