Performance and Accessories 2nd gen only Talk about Dodge/Cummins aftermarket products for second generation trucks here. Can include high-performance mods, or general accessories.

adapters for stock downpipe to 4 inch exhaust

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Old 08-04-2018, 04:39 PM
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adapters for stock downpipe to 4 inch exhaust

I made the decision to put a "custom" exhaust on my 94 12 valve. Im stickin with the stock downpipe which i believe is 3in and im trying to put a 4 inch pipe attached to it but i cant find anywhere a good adapter from 3 to 4 thats stainless. if anyone knows of an adapter that i can just clamp on the stock downpipe that goes to a 4in let me know!
Old 09-01-2018, 11:28 AM
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Try the current line up of aftermarket exhaust manufacturers.....
Old 09-01-2018, 12:45 PM
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This is part of the stainless downpipe that came off my buddy's '02... not sure who made it. Disregard the band clamp; I'd cut it apart to try it for something else.
Old 11-16-2018, 07:41 AM
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Originally Posted by Sir_Timn
I made the decision to put a "custom" exhaust on my 94 12 valve. Im stickin with the stock downpipe which i believe is 3in and im trying to put a 4 inch pipe attached to it but i cant find anywhere a good adapter from 3 to 4 thats stainless. if anyone knows of an adapter that i can just clamp on the stock downpipe that goes to a 4in let me know!
Did you find someone that makes this? Thanks!
Old 11-16-2018, 07:56 AM
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Originally Posted by Marine
Did you find someone that makes this? Thanks!
I found one from summit that worked well. It's not stainless but it will do
Old 11-16-2018, 03:27 PM
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Thanks. CPP Diesel is another one HTT recommended just now. They recommended I move down in injector size before I replace the turbo for a smaller one and see what the EGTs do. I have my stock ones I will try.
Old 11-18-2018, 10:36 AM
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I googled up a bunch of them. Here is one
Amazon Amazon
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