stock exhaust size??

5678TA

New member
hey guys, is the stock exhaust a 3"?? cause my ty has a 3" exhaust and i'm guessing its not stock. looks similar to the RPM exhaust with the round canister muffler. I was told the truck was all stock.

found it interesting and just wanted to know.
 

5678TA

New member
Re: stock exhaust size??

for now, the list is small. i want to get all the little stuff done first. like freshening the ignition and fuel system, replacing vacuum lines and possibly rebuild the turbo. then give her a tune and be ready to do some damage. i wanna get her running good before i venture into deep water with bigger upgrades.
 

Quickstop [UK]

Combating adversyty.
Re: stock exhaust size??

The dp was 2.5" and that's the main restriction. My Ty had an aftermarket SS setup made but the dp was still 2.5". RPM sold me a 3" one so the whole thing was 3" including the cat back.

I'm not 100% about the rest of the system but the dp was 2.5" so I would assume (the mother of all f ups) that the rest was 2.5".

That's the restriction anyway. If you've got a 3" exhaust including the dp then there are other things on the list to deal with.
 

SY756

New member
Re: stock exhaust size??

If memory serves me correctly both the Sy's and Ty's came with 2.5" DP to the cat, then 2.5" out of the cat to the muffler . Then the Ty's went with a 3" tailpipe and the Sy's went with dual 2.25" tailpipes.
 

dgoodhue

BuSTeD 4.3
Re: stock exhaust size??

If memory serves me correctly both the Sy's and Ty's came with 2.5" DP to the cat, then 2.5" out of the cat to the muffler . Then the Ty's went with a 3" tailpipe and the Sy's went with dual 2.25" tailpipes.

Sy's exhaust split after the 2.5" cat connection and went to two mufflers. Both came with Dynomax Super Turbo mufflers.
 
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