Thinkin about changing my exhaust
www.ls1sounds.com
Just in case you didnt know, unless your catback is rusted out all you need to do is buy a muffler and have it swapped in, not the whole catback. Call around and get some quotes for doing something like that.
I have a FM C/B, its plenty loud lol.
Wanna make it louder and quicker with one mod? Get a stall, haha.
You could also get a cut-out and have it bypass the muffler so it's real loud. Lol.
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EDIT: Just reread TooLate's post. I can keep my flowmaster catbacks and just replace the muffler with a LM and it would sound the same as a SLP catback and muffler?
Last edited by Northside405; Mar 8, 2010 at 04:58 PM.
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Basically, this is what I need to know:
1. If I were to go with SLP LM, do I need new piping or can I keep the flowmaster piping?
2. Do I need just the cats, or both the cats and the muffler?
3. Would it sound pretty much the same if I just used the muffler and kept the flowmaster cats?
For the record, I am not going to go catless. I don't ever plan on doing headers or an ORY or true duals. I'm just going to be putting on the SLP lid relatively soon also. You all are being very helpful and very patient with me and I really appreciate it!
Basically, this is what I need to know:
1. If I were to go with SLP LM, do I need new piping or can I keep the flowmaster piping?
2. Do I need just the cats, or both the cats and the muffler?
3. Would it sound pretty much the same if I just used the muffler and kept the flowmaster cats?
For the record, I am not going to go catless. I don't ever plan on doing headers or an ORY or true duals. I'm just going to be putting on the SLP lid relatively soon also. You all are being very helpful and very patient with me and I really appreciate it!

You'll need to get the whole LM catback because it has a different design then any of the other catbacks for out cars. The muffler is also completely different than any other catback.
The car probably has the stock cats, it doesn't have flowmaster cats, therefore your whole system is stock until after the cat, then it's the flowmaster piping and muffler.
http://marylandspeed.com/slp-modular...042-p-139.html
Last edited by MonmouthCtyLS7; Mar 8, 2010 at 07:07 PM.
Or you could go LM2 which is quieter than LM1. Detoxx mentioned the powerflow, which you could do, but if you have a Camaro the two mufflers in the back would probably show and look kinda ricerish, but if you could go that route too. It would be quieter and would would eliminate rasp if you DID ever decide to do headers.
If you have a LT1 car, you will need an adapter to make the LM system fit.






