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Old 01-12-2018, 11:09 PM
  #316
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Purchased both 2 1/2” and 3” exhaust tubing kit, plus x cross over, 2 into 1, 3” x 12” reasonator and multiple mufflers. I read up on way too many ways to build the exhaust, so hopefully I come up with one that has performance and is some what quite












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Old 01-13-2018, 09:33 PM
  #317
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Fitted and tact the cats from headers to X pipe. Everything went together well. Next willl work on muffler section after reasonator and will do tail pipes after paint.





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Old 01-14-2018, 01:26 AM
  #318
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Originally Posted by Blagave


Did you run out of shoes for your pictures?
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Old 01-14-2018, 02:11 AM
  #319
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Originally Posted by UNEEKONE View Post
Did you run out of shoes for your pictures?
We don.t wear shoes in the house either, especially on h hardwood floors.
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Old 01-14-2018, 11:15 PM
  #320
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Finished up welding everything and bolted exhaust to headers. The exhaust has clearance at header, but I used some heat wrap as extra security. I have a heat blanket wrap for the starter. I was able to use all the stock heat shields from front to rear with a little mod. All (4) o2 sensors are in and connected. Mounted rear dynomax muffler, my only issue is that the exhaust system is tucked up and there isnít much room for the hangers. I found some Walker hangers I think will work and should have them in a few days. Trying to button things up, hoping the car goes for paint this week







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Old 01-15-2018, 11:55 AM
  #321
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What's the benefit or running an X and a Y pipe?
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Old 01-15-2018, 12:10 PM
  #322
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Originally Posted by Imo000 View Post
What's the benefit or running an X and a Y pipe?
X pipe evens up flow and pressure and helps with the droning noise, supposedly adds a few HP. I am more concern with the dreaded humming noise at highway speed., so doubling up on resonator and x pipe to help keep it stay quite. The "Y" pipe is taking the (2) 2 1/2" pipes and converting to single 3"....just easier to run a single 3" instead of (2) 2 1/2" pipes through the suspension etc.
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Old 01-15-2018, 12:57 PM
  #323
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Thats some really nice work going on there!
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Old 01-15-2018, 01:58 PM
  #324
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Originally Posted by Blagave View Post
X pipe evens up flow and pressure and helps with the droning noise, supposedly adds a few HP. I am more concern with the dreaded humming noise at highway speed., so doubling up on resonator and x pipe to help keep it stay quite. The "Y" pipe is taking the (2) 2 1/2" pipes and converting to single 3"....just easier to run a single 3" instead of (2) 2 1/2" pipes through the suspension etc.
Wouldnít the Y pipe even out the pulses too? Since you are taking the entire system town to a single pipe, wouldnít the benefit of the X gets lost at the Y connection? The only reason Iím asking is that I havenít yet seen a combination like yours before.
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Old 01-15-2018, 02:03 PM
  #325
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Originally Posted by Imo000 View Post
Wouldnít the Y pipe even out the pulses too? Since you are taking the entire system town to a single pipe, wouldnít the benefit of the X gets lost at the Y connection? The only reason Iím asking is that I havenít yet seen a combination like yours before.
Don't know, not a exhaust guy. I read several exhaust articles and outlined my situation to a engine builder friend. I purchased what he suggested and built it. I hope everything works as planned.
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Old Yesterday, 07:27 PM
  #326
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I did the same thing although I did it more to keep from burning myself from adding ATF while the engine was warmed up than anything else. The car feels stronger regardless if it's X into Y or just the X into 2 Flowmasters I ran before.

Blagave, what model Super Turbo Dynomax is that? I bought a 3" in/out offset just like that, but when looking side, it looks like the muffler necks down to 2.5". Theoretically this would kill HP, unless it's mounted at the very back of the car, where due to length and loss of heat, wouldn't affect performance.

https://rennlist.com/forums/attachme...1&d=1396052081
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Old Yesterday, 09:38 PM
  #327
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Mongo.....the muffler is 3” in 3’ out
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Old Yesterday, 09:57 PM
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That's the one I have in a box still. My part number is #17744, offset in/center out. However, the sucker necks down after the inlets to 2.5". Picture below shows the taper.
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Old Yesterday, 10:02 PM
  #329
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Interesting..........i will be reducing down to 2 1/2” in order to connect to the tips more towards the back.
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Old Yesterday, 10:03 PM
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For some reason I can't edit the post I just added. That picture is not mine. This was the same muffler cut open off a Mopar forum. The guy ran 17744's from Dynomax on a 440 car and "claimed" he lost horsepower.

A single piped 928 (16v or 32v) I assume would be fine with a 3" turbo muffler such as this, just so long as it's mounted where the primary muffler is - at the very back at the car, well after the 8-9 feet of exhaust length where the exhaust is the coolest.

For your 376 LS3, I don't think this will be an issue for you either as long as you mount it as indicated above.
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