3.5 inch down pipe
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New User
Joined: Jan 2006
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3.5 inch down pipe
I ordered a 4" exhaust kit and it came with a 3.5 inch down pipe. It is already installed and I just saw that it was supposed to come with a 4" down pipe. Should I change it? Am I losing performance?
Thanks.
Thanks.
Elder User
Joined: May 2005
Posts: 968
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From: Tennesee
borntofish,
Actually the 4.0 down pieps on a 6.0 are nothign but advertising. No gain in flow or drop in EGT as compared to a 3.5. We built the first 6.0 systems on my truck at MBRP and the 4.0 was tried and there was no benefit at all with the VRT turbo. In fact you're better off as lots of times the 4.0 will hit the firewall when you're towing and create a lot of unwanted racket anyway.
Mark @ DPPI
Actually the 4.0 down pieps on a 6.0 are nothign but advertising. No gain in flow or drop in EGT as compared to a 3.5. We built the first 6.0 systems on my truck at MBRP and the 4.0 was tried and there was no benefit at all with the VRT turbo. In fact you're better off as lots of times the 4.0 will hit the firewall when you're towing and create a lot of unwanted racket anyway.
Mark @ DPPI
