LT1-LT4 Modifications 1993-97 Gen II Small Block V8

LTs Too Quiet?

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Old Nov 1, 2011 | 12:20 PM
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Default LTs Too Quiet?

I just finished up the exhaust on my LT1 Camaro today. I have to say that I'm really disappointed. It sounds ok, but it's way too quiet.

It's a bit of a ghetto-Frankenstien setup:

Stock LT1 engine
Pacesetter LTs w/ EGR
American Racing Dual Catted LS1 Y-Pipe
Magnaflow LS1 Catback

I know I can just put a cutout on it, but I was really hoping that this combo would have been a little bit louder from the start. Is anyone else really let down with their setup?
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Old Nov 1, 2011 | 12:32 PM
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I had pacesetter lt, y pipe, and flowmaster muffler and I got a lot of compliments on how it sounded. Quiet at idle but loud at wot, then I put a borla cb and it was always loud. Can you run it without the cats?
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Old Nov 1, 2011 | 12:38 PM
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I have yet to be at WOT with the new exhaust yet. I was hoping it would be loud all the time. Legally, I have to have cats. It's unfortunate.

Originally Posted by 97camaro383
I had pacesetter lt, y pipe, and flowmaster muffler and I got a lot of compliments on how it sounded. Quiet at idle but loud at wot, then I put a borla cb and it was always loud. Can you run it without the cats?
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Old Nov 1, 2011 | 12:40 PM
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I was let down as well, expected a lot more sound, but have recieved a bunch of compliments when I did the exhaust... maybe it's in your head?
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Old Nov 1, 2011 | 12:44 PM
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I have Jet-hot LT's, hooker y-pipe, SLP 3" TOTL w/ Magnaflow 12288 muffler, no cats and IMO is loud even when idling. But I have the whole heads/cam setup so that might be the difference.
http://www.youtube.com/watch?v=Uy35az2J-so
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Old Nov 1, 2011 | 12:45 PM
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I've never had cats on my car, but I'm sure they're not helping you out volume wise.

My stock LT1 is really quiet at idle with the Hooker Aerochamber + LPP lt's and ORY, but it's pretty loud going over 2500rpm's and absolutely screams at WOT. That's exactly how I want it to be. I have a cut out too if I want to be loud all the time.
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Old Nov 1, 2011 | 12:55 PM
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its the cats and maybe some of the magnaflow catbacki had pacesetter lts and the pacesetter ory, followed by a dynomouth catback i thought it was stupid loud. I got 2 cats from summit and now i really like it. Seems decently loud but not over kill
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Old Nov 1, 2011 | 12:55 PM
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its the cats and maybe some of the magnaflow catbacki had pacesetter lts and the pacesetter ory, followed by a dynomouth catback i thought it was stupid loud. I got 2 cats from summit and now i really like it. Seems decently loud but not over kill
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Old Nov 1, 2011 | 01:17 PM
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It might be in my head. I'm used to driving a H/C/I Z06 with no cats, and I've been driving this car with open headers for a while.

You know it's too quiet when I can actually carry on a conversation in the car. The cutout should help that.
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Old Nov 1, 2011 | 01:22 PM
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Is it a new magnaflow catback? If so it will get louder with time. Also it will be loud at WOT
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Old Nov 1, 2011 | 01:29 PM
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Ontario emissions laws suck *****. A friend of mine said the same thing when he put the magnaflow on his. He ditched it for a Borla and it was night and day. Im running a PS LTs, Dual Catted Y, and Borla Open. Cant beat the sound IMO. Add a e cutout in the right tail pipe and you can have it stealthy quiet or wide open at the flick of a switch.
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Old Nov 1, 2011 | 01:35 PM
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If they don't do a Visual inspection under the car put cut outs before the cats ? I personally wouldn't expect much from that set up. The cats are the killer. Since you need to keep them ( I guess they do a visual? ) then get an slp, Texas speed or similar style with no real muffler. The cats are enough of a muffler.
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Old Nov 1, 2011 | 01:54 PM
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Originally Posted by gregrob
Is it a new magnaflow catback? If so it will get louder with time. Also it will be loud at WOT
It's used actually. Won't get much louder than it is now.

Originally Posted by 95mysticta
Ontario emissions laws suck *****. A friend of mine said the same thing when he put the magnaflow on his. He ditched it for a Borla and it was night and day. Im running a PS LTs, Dual Catted Y, and Borla Open. Cant beat the sound IMO. Add a e cutout in the right tail pipe and you can have it stealthy quiet or wide open at the flick of a switch.
Borla is the same as doing a cutout (more or less). I'll just put a cutout on the Magnaflow. Was hoping I wouldn't have to, but it's just not living up to what I had pictured.

Where did you put the cats on your car? Do you have any pictures? My drivers side one hangs low.


Originally Posted by 02v8ta
If they don't do a Visual inspection under the car put cut outs before the cats ? I personally wouldn't expect much from that set up. The cats are the killer. Since you need to keep them ( I guess they do a visual? ) then get an slp, Texas speed or similar style with no real muffler. The cats are enough of a muffler.
There is a visual and a sniffer. They're not friendly. I don't really care to go through the effort of doing another catback swap. I have no doubt that an LM1 or LM2 would be much louder, but it's just not with the effort.
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Old Nov 1, 2011 | 01:57 PM
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Converters are your problem if you want loud...get some fake cats if the smog ***** are giving you trouble: http://www.frozenboost.com/product_i...04a9f3530288b7
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Old Nov 1, 2011 | 02:10 PM
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Running fullsize generic 3" magnaflow hi-flows. Passenger side right off the collector and the driver side after the bend. Unless your running bullets its going to scrape a little bit on steep inclines. I rarely do and neither does my dads which has same setup just with Jet Hot Lts.


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Old Nov 1, 2011 | 02:18 PM
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Originally Posted by 95mysticta
Running fullsize generic 3" magnaflow hi-flows. Passenger side right off the collector and the driver side after the bend. Unless your running bullets its going to scrape a little bit on steep inclines. I rarely do and neither does my dads which has same setup just with Jet Hot Lts.
Thanks for the pictures! I did virtually the same thing with ARH cats.
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Old Nov 1, 2011 | 04:08 PM
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If you're gonna run cats, get a GMMG catback and be done!
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Old Nov 1, 2011 | 07:57 PM
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True duals,1chamber flows,x-pipe great sound
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Old Nov 1, 2011 | 08:29 PM
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True duals and never look back. Mine sound great. I get compliments daily on how good it sounds...

http://www.youtube.com/watch?v=ItIhYyJl5SI
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Old Nov 1, 2011 | 08:38 PM
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I put a Flowmaster Super 44 2 chamber on my Z, 3" in 2x2.5 out, Sounds Obnoxious!! I dont have a cat either but I dont even have Lt's yet..... $60 on Ebay and another $50 for it to dual exit out the back.....
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