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Dumped Y pipe

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Old Mar 10, 2020 | 07:13 PM
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Default Dumped Y pipe

Due to my BMR Extreme torque arm crossmember, space is limited and I’m going to have to run a Y pipe, I’d like to dump it after a 14-16” dynomax bullet, anyone on here have that setup? Y pipe is from speed engineering.
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Old Mar 10, 2020 | 07:46 PM
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I’d also like to cut the y pipe merge outlet to a 3.5”
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Old Mar 10, 2020 | 07:59 PM
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https://ls1tech.com/forums/generatio...ut-dumped.html

Easy and lightweight. Id probably try to run it side exit in front passenger tire with maybe an oval slash cut to cut down on resonance and drone.
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Old Mar 10, 2020 | 08:23 PM
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Since my Y pipe is stainless, do I have to use a stainless muffler? To be welded...or can a mild steel muffler be welded to the stainless Y?
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Old Mar 10, 2020 | 08:47 PM
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Originally Posted by Newbomb
Since my Y pipe is stainless, do I have to use a stainless muffler? To be welded...or can a mild steel muffler be welded to the stainless Y?
Welding mild is fine. Depends where you live. If they salt the roads get stainless
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Old Mar 14, 2020 | 06:56 AM
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It will be extremely loud. Not sure how much you care about noise level. I've got a similar setup but I want to move to a cat back with a cutout or something.
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Old Mar 14, 2020 | 12:48 PM
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Try to find a boom tube and exit it in front of the rear tire
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Old Mar 14, 2020 | 05:50 PM
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I have ARH 1-7/8 LT's with 3" collectors into a catted ARH 4" Y, With a 4" dynomax bullet turned down at 45 degree angle it was too loud for me and the drone was pretty bad from 1950-2400 rpm, I have since changed to a 4" Flowmaster 50 Series Delta Flow also dumped at 45 degrees just in front of the axle and I love it, has about 100 rpm spot where it drones and thats it, sounds awesome and didn't give up any power at all to the bullet.
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Old Mar 25, 2020 | 02:02 AM
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If I just use a 3" bullet and turn down off the Speed Engineering Y pipe, will I lose much power compared to cutting the merge back a bit and welding on a 3.5" bullet and turndown? LS1 with 243's, 228/232 cam, LS6 intake, headers.
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Old Mar 25, 2020 | 04:56 PM
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Originally Posted by Newbomb
If I just use a 3" bullet and turn down off the Speed Engineering Y pipe, will I lose much power compared to cutting the merge back a bit and welding on a 3.5" bullet and turndown? LS1 with 243's, 228/232 cam, LS6 intake, headers.
Id cut it back and use the larger muffler if you can. If it's going to be loud it sure better flow well otherwise it's a waste of time.
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