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header install

Old 06-27-2011, 09:30 PM
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Just bought hooker lt and ory and slp lm2 after I get it installed. What comes next. I've herd tune? But what else? Im deleting the cats also. And should I expect a huge gain? In power and sound?
Old 06-27-2011, 10:55 PM
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I would definitely get it tuned. I myself bought Pacesetter LT's and a TSP catted Y-pipe that I'm waiting to get installed. Make sure that you have new motor mounts and O2 extensions if you didn't already have them.
Old 06-28-2011, 03:19 AM
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You don't have to get it tuned, but you will need to either get it tuned to remove the rear O2 codes from the computer, or you can use O2 simulators, they trick the computer into thinking the rear 02s are working fine.
Old 06-28-2011, 06:01 PM
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New motor mounts?
Old 06-28-2011, 08:25 PM
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if u delete the cats then u will need a tune to delete the o2 sensors. when i did my headers i did not need new motor mounts, i was told mine was the best ones he had seen, talking bout the guy who installed them. you will net a small gain from the setup and it will be louder then hell with the lm2.
Old 06-29-2011, 12:52 PM
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Just do a search.....this topic has been cover a thousand times over.
Old 07-04-2011, 03:06 PM
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with lts and catless y and tune i gained 25ish rwhp
Old 07-04-2011, 05:23 PM
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you get a foul smell from no cats. though some like it.
Old 07-04-2011, 07:41 PM
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I wouldnt waste my money on a tune untill you do more to the engine unless this is all you plan to do.......
Old 07-04-2011, 08:36 PM
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Originally Posted by ULTIMATEORANGESS
you get a foul smell from no cats. though some like it.
It is really not that bad if you have an exhaust that dumps past the rear axle.
Old 07-04-2011, 10:12 PM
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Originally Posted by ULTIMATEORANGESS
you get a foul smell from no cats. though some like it.
I get high off that smell.
Old 07-04-2011, 10:16 PM
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It is really not that bad if you have an exhaust that dumps past the rear axle.
I still get wiffs from light to light.
But i never smell it if i just roll up my windows.
Old 07-05-2011, 12:52 AM
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you should expect decent gains maybe 30 hp something in that area with the cat delete. i deleted mine and from time to time i get that foul smell kind of like an exhaust leak but most of the time i really don't notice it plus i LOVE the way it sounds w/o cats. it gets mean if you have the right cam setup with it too. you will need a tune deff. but only after you've finished doing all your mods or you will waste you money on additional tunes. i really don't see anything else you would need for that install.
Old 07-05-2011, 07:01 PM
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Originally Posted by ws6outlaw
you should expect decent gains maybe 30 hp something in that area with the cat delete. i deleted mine and from time to time i get that foul smell kind of like an exhaust leak but most of the time i really don't notice it plus i LOVE the way it sounds w/o cats. it gets mean if you have the right cam setup with it too. you will need a tune deff. but only after you've finished doing all your mods or you will waste you money on additional tunes. i really don't see anything else you would need for that install.
You may get 30 hp total from the headers/ORY, not from just deleting the cats. I say get rid of them, the smell isn't that bad and its one less thing to worry about.
Old 07-05-2011, 09:27 PM
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yeah i meant the whole setup. theres no way a cat delete can give you 30 rwhp gains. but yeah i agree get rid of them as long as you can get it inspected or you don't have to get it inspected
Old 07-05-2011, 10:52 PM
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a mail order tune by Frost would be worth it.
Old 07-05-2011, 11:49 PM
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i paid for my tune but i get free tunes whenever i upgrade tho so money well spent......smell i get it every now and again nothing too bad but she sounds sick without those cats ....i would of gain more hp but i have flow masters
Old 07-07-2011, 11:39 AM
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Installed hooker LT's about a month ago, with TD's and a tune. Gained 6 mph on my trap. If yours is an a4, def tune that ****.


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