down pipe
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New User
Joined: Mar 2007
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down pipe
I was woundering how big the down pipe is on my 06 6.0. I think it is 3.5 in, but iam not sure. I would like ot put a full trubo back exhaust system on but i have been told that if i go with a bigger down pipe that 3.5 in it will crack do to the tourqe of the engine and the fire wall. so i am trying to find away around this, if someone could help me that would be great.
Postmaster
Joined: Jun 2006
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I put a 4" on my '06. It requires a little modification to the pinch weld of the firewall to fit, but it will fit. Specifically, take a hammer and beat the crap outof the pinch weld until it's flat. 
Putting a 4"DP will make you lose some low end torque, unless you're pretty well modified.
Putting a 4"DP will make you lose some low end torque, unless you're pretty well modified.
