4 inch down pipe?
12-09-2006, 01:44 AM
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4 inch down pipe?
I have an 03. I'd like to get a Nelson or Donaldson muffler. If I'm going to do that I might as well change the down pipe too. Anybody know the part number and where to get it? Will it be 4 inches from the turbo to the tip then?
12-10-2006, 10:01 AM
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You'll need the 4" cast elbow to be 4" tip/tip. I'm 4" back from where the muffler used to be. Been thinking of doing the elbow and down pipe. TommyGun used to sell these elbows on TDR, but I havn't dug for a P/N yet.
12-10-2006, 10:15 AM
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I changed mine over to from turbo back , including muff. , and was thinking about getting an elbow also , but still have the original turbo , one thought I had was that if I put the larger elbow than would that reduce the back pressure at the exhaust wheel and make it spool up slower ?
12-10-2006, 09:15 PM
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I believe it will fit though I am not sure... Check around and see and then let me know and I will let you know when my new exhaust gets here and I will send it off!!!
Shane
Shane
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12-11-2006, 09:06 AM
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Luvnacumns, thanks. I'm sure someone will chime in here if there is a problem with the fit. I guess all I need now would be the 4" cast elbow. Anybody have a suggetion on where to get one?
12-11-2006, 08:42 PM
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12-11-2006, 08:59 PM
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4"
I'll be doing the same thing, but I'm gonna do it with a PacBrake. C44045 model for the "04.5 is 4" in 4" out. Check them out. It's more than just a few dollars more for it, but I need one for towing. Just food for thought.
12-12-2006, 09:38 AM
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I'd like to do an exhaust brake, but I don't think the old transmission is up to the chore. Plus I only tow 11,000 pounds about 6 to 10 times a year. I'm not sure the $$$ would be worth the benefit in that case. I'm just trying to keep the EGT's down. The cold air intake helped, but I want to go one step further.
12-13-2006, 01:05 PM
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You may already realize this but another alternative would be an MBRP or AFE replacement system, the downipe on those systems instantly flares to four inch, within a few inches of the cast iron elbow.
