Cat or muffler delete...? - Ford Powerstroke Diesel Forum
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post #1 of 18 Old 03-16-2012, 06:41 PM Thread Starter
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Cat or muffler delete...?

Well I'm wondering what to do. Cat delete or muffler delete. The reason I'm wondering is if I delete the muffler will I get bad mileage if so then I'm not going to do it. If I delete the muffler I will get decent sound but it won't help my egts to much. So what do you guys think. I want honest answers now. I want to know if it will kill my mileage if I delete the cat. Thanks guys.

Austin

I'm addicted to diesel and I step on it constantly!

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post #2 of 18 Old 03-16-2012, 06:47 PM
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Deleting the Cat will increase mileage more then deleting exhaust.

Also egt's will lower more without a kitty. Compared to deleting exhuast

If you are not worried about emmisions then the best would be a straight pipe or a deleted kitty with muffler still installed.

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post #3 of 18 Old 03-16-2012, 06:55 PM
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Honestly, I don't think doing anything to your exhaust will do anything to your mileage either way. It's in your right foot. Exhaust is for sound, looks, and to drop post turbo egt's. I think you're wasting your time decided between this or that, just straight pipe it from turbo back and add the cat and/or muffler one at a time if straight pipe is too loud.

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post #4 of 18 Old 03-16-2012, 06:55 PM Thread Starter
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I'm trying to save a little money at the moment you know how it is. So I want to delete the cat but my dad said everyone that did it killed their mileage. So now I'm scared. I don't care if any of it helps my mileage. But I want a little more sound just a little and I would complain about having lower egts.

I'm addicted to diesel and I step on it constantly!

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post #5 of 18 Old 03-16-2012, 06:57 PM
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at smog time the cat is only visual correct, I want to hollow mine out and maybe put a pipe thru it so it will still pass.
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post #6 of 18 Old 03-16-2012, 06:59 PM Thread Starter
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I live in Florida and we don't have to deal with any of that. So that why I am not worried about that.

I'm addicted to diesel and I step on it constantly!

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post #7 of 18 Old 03-16-2012, 07:32 PM
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The reason for lower mpg when people delete their kitty is the sound is SOO much nice and you end up laying into the throttle more often.

Ask me how I know
Hehehe

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post #8 of 18 Old 03-16-2012, 07:57 PM
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Quote:
Originally Posted by Six0~Stroker View Post
The reason for lower mpg when people delete their kitty is the sound is SOO much nice and you end up laying into the throttle more often.

Ask me how I know
Hehehe

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I agree,i deleted my cat and it helped my mileage but it sounds so good now I can't keep my foot out of the throttle!

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post #9 of 18 Old 03-16-2012, 08:19 PM Thread Starter
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You guys aren't yanking my chain are you. Cuz if I delete my kitty and it kills my mileage I'm trading trucks with you and most likely you six o stroker lol

I'm addicted to diesel and I step on it constantly!

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post #10 of 18 Old 03-16-2012, 09:18 PM
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Thank you for the compliment!

And we ARE being serious about the kitty making mpg's better but making the sound addicting.. Just don't drive like a 16 year old on every stop light and your mpg will be good

2005 F250 King Ranch Work Truck.

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Warren Comp Tranny w/ PI TC
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