Need to know DP Size...

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Apr 22, 2004 | 08:13 PM

F-250 Super Duty

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Laughing Gas

Joined: Feb 2004

Posts: 1,080

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From: Elsinboro, NJ

Need to know DP Size...

I want in on the group purchase for the exhaust systems, but what size Downpipe do I need for a 2002 7.3L.....Please answer quick if you know I want to order it tonight. Thanks, Mike

Apr 22, 2004 | 08:17 PM

cookie88

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Joined: May 2001

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From: Cabot, Arkansas

You can use either the 3.5" or the 4". I think in the long run you'll be happier with the 4".

Apr 22, 2004 | 08:20 PM

F-250 Super Duty

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Laughing Gas

Joined: Feb 2004

Posts: 1,080

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From: Elsinboro, NJ

Thanks, That's what I wanted to hear!!! That was a quick answer

Does any mod have to be made to the turbo to go to the 4"???

Apr 22, 2004 | 08:58 PM

bigdieseldav

Senior User

Joined: Nov 2003

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From: Abilene TX

you will have to make one serious modification......... You'll have to modify your RFAPRD...... Right Foot Accelerator pressure Regulator Deally. Its hard to keep your foot out after the exhaust goes in. All the little sounds you've grown to enjoy from the turbo are now pleasantly amplified along with some noticable power to play with. Enjoy.....

Apr 22, 2004 | 09:19 PM

cookie88

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Joined: May 2001

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From: Cabot, Arkansas

Quote:

Originally Posted by F-250 Super Duty

Thanks, That's what I wanted to hear!!! That was a quick answer

Does any mod have to be made to the turbo to go to the 4"???

Nope, cut the old exhaust off, bolt the new one in.

Apr 22, 2004 | 11:53 PM

wlihntr

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Joined: Jan 2004

Posts: 4,758

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From: colorado

if i remember right you have to move an engine block ground strap, it is right where the pipe comes down, you just unscrew it and screw it back into one of the holes to the outside of the engine block(pretty simple)