what size downpipe?

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Feb 20, 2010 | 12:38 AM

#11

Wilde Racing

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From: Behind the TIG welder

Quote:

Originally Posted by GENIIIDude

Aren't 4" diesel kits easier to find than 3.5"? Not that it matters, but finding a nice mandrel bent peice than clears your rear axle is not always easy - I know that there are a lot of 4" kits out there. I used a 4" kit for a 99-02 Dodge Cummins, every thing up to the downpipe fit great, I only had to add a 45 at the turbo. thats my 2 cents.....

True, and my went from five to four right under the cab then I used factory diesel **** for the rest. I also had a 3" cut-out before the four inch bottle neck...

Feb 20, 2010 | 08:37 AM

#12

OnyxSilveradoSS

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From: Detroit

so if your DP is too big you'll lose boost/spool?

Feb 20, 2010 | 10:50 AM

#13

Wilde Racing

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From: Behind the TIG welder

nope, the only thing you will gain is less room and maybe some drone.

Feb 21, 2010 | 10:01 AM

#14

OnyxSilveradoSS

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From: Detroit

so if I went down from 5" to 4"/3.5" on a S400 it would not be a 'bad' thing? I am actually thinking of coping your T6 set up-so I have to pick your brain

Feb 21, 2010 | 11:26 AM

#15

Wilde Racing

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From: Behind the TIG welder

I think it would be fine, 3.5 maybe a bit restrictive depending on lenght, bends, and muffler

Feb 21, 2010 | 11:46 AM

#16

1989k1500

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Quote:

Originally Posted by OnyxSilveradoSS

so if I went down from 5" to 4"/3.5" on a S400 it would not be a 'bad' thing? I am actually thinking of coping your T6 set up-so I have to pick your brain

Do 4. TJ made it fit great in Blackburns truck.