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Long Tubes, No cats, Magnaflow 14419 mod to new TSP S/S ORY, GMMG

Old 02-04-2012, 08:50 PM
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Default Long Tubes, No cats, Magnaflow 14419 mod to new TSP S/S ORY, GMMG

I knew this setup was going to be loud, so I went ahead and bought the Magnaflow 14419. The new TSP ORY is really nice but necks down to 2.5 inch where it connects to the cat back. I realize they have to do this so that it will fit most all cat backs, which is fine. I was going to wait on installing the Magnaflow and just see how loud it was. The GMMG mid pipe also necked down, so I decided to go ahead and install the Magnaflow and weld it straight to the end of the Y section of the ORY. This would give me 3 inch all the way out. It worked great, and fits good under the car. I didnt get a chance to drive the car but it is still loud as hell in the garage. I am not sure if I am getting rasp or not. If it does and I cant take the noise then I will but some cats on it. I think the good TSP merge helps the rasp.

I read a lot of complaints on rasp so I wanted to share my mod. I will get some pictures of it under the car tomorrow.















Old 02-04-2012, 09:14 PM
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Nice work so far. Video is required when you're done.
Old 02-04-2012, 10:29 PM
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Good stuff. +1 for the vid.
Old 02-05-2012, 07:58 AM
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I have a GoPro so I am gonig to try and get one today. The car seems like it is smoking after I put the headers on. Its not the smoke burning off the headers either, it is coming out the exhaust. Its white/blue smoke not black. And it smells like burning oil. I have read about guys noticing these cars smoking after a LT install. I know its impossible for the headers to cause the car to burn oil, but I never noticed it before. Maybe the cats used to burn the oil out of the exhasut when they were still in there....wierd
Old 02-05-2012, 04:00 PM
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Ok, here is the video I made today, I think it sounds really good. As far as I can tell it has very little rasp. Maybe I am wrong. It is pretty loud but I guess I was expecting it to be louder. The Magnaflow must have tamed it down quite a bit. This GoPro does not have the best sound, my laptop speakers are not very good either so let me know how you think it sounds. I turned off the EGR, and the AIR in the tune as well as the rear 02's. The car is backfiring bad, I reused my stock plugs and wires. I am thinking I may have broke a plug. I searched around and that seems to be common with header swaps. I will pick up some tomorrow and swap them out.

http://www.youtube.com/watch?v=YZ6Mo...ature=youtu.be
Old 02-05-2012, 05:28 PM
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Good Lord, that is a clean *** car! Looks great!
Old 02-05-2012, 10:05 PM
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i have the same muffler dumped with a electric cutout because its too tame for me
Old 02-06-2012, 07:20 AM
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Originally Posted by therobman
i have the same muffler dumped with a electric cutout because its too tame for me
Nice, I bet that is LOUD!
Old 02-06-2012, 12:25 PM
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Here it is in the car for anyone wanting to see ground clearence, My car is only lowered about an inch.











Old 02-06-2012, 12:43 PM
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is it still smoking? it should have only smoked for a min or 2, sounds really good, if i ever went back to a catback i would for sure have the same setup, i always loved the tone of the gmmg, and i always liked a lil rasp, nice work car sounds and looks great
Old 02-07-2012, 08:48 AM
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Originally Posted by BOBS99SS
is it still smoking? it should have only smoked for a min or 2, sounds really good, if i ever went back to a catback i would for sure have the same setup, i always loved the tone of the gmmg, and i always liked a lil rasp, nice work car sounds and looks great


Yes it is, I think its the PCV, I know the LS1 PCV system is not that great. I guess thats why everyone swaps to the LS6 or runs a catch can. Also the back fire is gone, I swapped all the plugs, and found a coil boot with a split in it.

If you search "smoking after headers" there are all kinds of threads.
Old 11-16-2012, 10:34 AM
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I know this is a bit old, but that sounds great. That Magnaflow bullet is a great idea for the GMMG.
Old 11-16-2012, 04:22 PM
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Great work
Old 11-26-2012, 01:58 PM
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Wow, Looks great! Did you have to TIG weld that or is there enough carbon in the stainless that you can just use a regular mig and steel wire? I think I'll be doing this same exact setup except with kooks headers and ORY.
Old 11-27-2012, 09:46 AM
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When I did mine I had it all TIG'd with stainless.

On a side note, is that red rhino lining under the car?
Old 11-27-2012, 02:39 PM
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Sounds great! Any new vids without the backfiring?
Old 11-28-2012, 07:49 AM
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Originally Posted by dr_whigham
When I did mine I had it all TIG'd with stainless.

On a side note, is that red rhino lining under the car?

Its Hugger Orange, Raptor Liner. My cell phone makes it look red.



Old 11-28-2012, 07:50 AM
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Old 12-03-2012, 09:41 AM
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I plan on doing the same thing as here but using a Kooks Y. I hope to clamp the Magnaflow muffler right to the 3" section of the Y pipe.

96lt4c4 - Do you think you can post up a quick picture of the ground clearance of the magnaflow can with the car on the ground?
Old 12-03-2012, 12:38 PM
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It's not your cell phone. I'm pretty colorblind. It would have helped to read your sig too....LOL

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