Riffraff downpipe
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Senior User
Joined: Nov 2008
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From: Lebanon
Riffraff downpipe
im looking at buying the 3" downpipe off of riffraff tonight and i was wondering if putting this in was hard i know i need to beat out the firewall ist this the hardest part ? and if there is any welding invovled
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
I got lucky and baught a truck with a DP on it. =)
Though. I am not sure if i should get a 3 to a 3 1/2 pipe for my exhaust upgrades I'm planning. Need more flow! For both sides of the truck!
Though. I am not sure if i should get a 3 to a 3 1/2 pipe for my exhaust upgrades I'm planning. Need more flow! For both sides of the truck!
Post Fiend
Joined: Mar 2006
Posts: 7,841
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From: Vacaville, Ca
William, go for it. Bigger is better, right? At least on the exhaust side anyway. IF it wasn't so dang loud, I would just run the DP and nothing else.LOL
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Joined: Nov 2009
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From: Benson,NC
what is the biggest DP you can get to fit in a '97 F-250. I would like to fix my exhaust next and only want to do it one time so I would like to make sure it is big enough.
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Post Fiend
Joined: Mar 2006
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From: Vacaville, Ca
The 3inch to 3 1/2 is a huge improvement to the stock pipe and is pretty much the biggest you can use to connect to the turbo. There is also a 3inch to 4 inch but I believe it still uses a section of 3 1/2.
Hotshot
Joined: Oct 2003
Posts: 17,799
Likes: 104
From: Ashland City, TN
But you can't really do much but that.
I gotta stay around 3 1/2 and then Y off to 3's to get under the trans for my project.
Just no way i'ma wrap a 4 inch pipe under the trans. haha. Just as long as i get equal flow to both sides, i'll be happy.
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Senior User
Joined: Nov 2008
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From: Lebanon
got it in last sunday dang more of a workout then i thought but overall pretty easy once we got the torch out . i went ahead and removed the cat while i was down there . as for messaging i just took a logging spike and pried it to get the stock one out and i just so happened to get it pries enough to slip the 3 " in . noticed a big defference in throttle lag and noise also my mpgs jumped up to 15 from 13.8
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