4" exhaust guys need opinions

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Apr 24, 2012 | 11:20 AM

#11

chanin6929

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From: Lafayette, LA

Quote:

Originally Posted by zachm89

im going to be running 2 12" borla XR-1s in line when I get my truck back from the tranny shop...im not expecting it to be stealthy, lol

Not sure if this would be the same thing, but I'm pretty sure Borla makes a 24" XR-1...

Just for reference, I'm setting mine up with a 3.5" with the 24" Borla XR-1 to keep it down a little, but will be running a cutout to be able to get the most flow possible...just another option if you are looking for a good performance setup, but want it fairly quite for regular use...

Apr 24, 2012 | 06:25 PM

#12

zachm89

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From: Texas

Quote:

Originally Posted by chanin6929

I could only find the 4" in/out in 12" and 16" case sizes. Reason I went with the 12's is because I picked them up on CL for $125 shipped for the pair with only 30-40 track passes on them, no road driving time at all. They were on a guys drag car so theyre literally like new with how little run time they have on them. Cant beat that price considering through Summit or Jegs those mufflers are in the $175 each range.

Apr 24, 2012 | 06:39 PM

#13

1 Slow 4.8

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I am running the 24 inch 4 inch magna flow

4.8 Boosted 24 Inch Magnaflow - YouTube

Apr 24, 2012 | 06:42 PM

#14

1 Slow 4.8

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This was with the borla xr1

http://www.youtube.com/watch?v=Z_QYWLczpGs

Apr 29, 2012 | 11:35 AM

#15

sleeperlqx

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Quote:

Originally Posted by Vortec350ss

4" is a lot of exhaust for a NA build... its gonan be interesting to see what you think of it. Are you dead set against 3.5"? I think it will be a lot easier to build something stealthy at that size pipe.

not really, In the future I have plans to drop a 6.2 in there, so the exhaust will be in place. Plus the 6.0, I need more mid to top end from it, so opening it up is going to help. I have 4.88 gears with a 4K stall, I need my motor to RING. 4" will be perfect for my setup. Truck will be tuned for the 4" exhaust as well.