Official TVS Thread!!!
04-13-2012, 03:32 PM
#302
Resonator
1. Anything Magnaflow is out. Along with anything that has any packing.
2. My experiment with the SW smooth tube was a complete failure. A stock 12" LNF resonator sounded better then the SW 24" one and a metal spun cat.
3. I have read a lot of good things about the Moroso spiral flow resonators. They are basic resonator with and exhaust auger insert. They are short and affordable. Trusted people on this forum swear by exhaust augers but they are hard to find in a 2.5" version. If someone knows of one, let me know!
4. The LNF resonator performed well. The inlet measures like 2.65". So enough for a 2.5" cat-back.
5. ZZP's new 3 chambered round resonator. Don't know much about it but it is big and long which is what you want in a resonator.
6. Vibrant Ultra Quite works on a LSJ. I have heard paired with a SW Turbo chambered muffler and it sounds great. Even in 3". But the case is big and need to be installed at an angle to fit in the LSJ exhaust tunnel.
1. Anything Magnaflow is out. Along with anything that has any packing.
2. My experiment with the SW smooth tube was a complete failure. A stock 12" LNF resonator sounded better then the SW 24" one and a metal spun cat.
3. I have read a lot of good things about the Moroso spiral flow resonators. They are basic resonator with and exhaust auger insert. They are short and affordable. Trusted people on this forum swear by exhaust augers but they are hard to find in a 2.5" version. If someone knows of one, let me know!
4. The LNF resonator performed well. The inlet measures like 2.65". So enough for a 2.5" cat-back.
5. ZZP's new 3 chambered round resonator. Don't know much about it but it is big and long which is what you want in a resonator.
6. Vibrant Ultra Quite works on a LSJ. I have heard paired with a SW Turbo chambered muffler and it sounds great. Even in 3". But the case is big and need to be installed at an angle to fit in the LSJ exhaust tunnel.
04-13-2012, 04:15 PM
#304
I have a moroso spiral flow and one or more of the augers broke inside and created a nasty rattle. I am running a catless 3in exhaust and I have read they do not like the heat and the pressure of a catless exhaust. I understand you are running catted 2.5 but I figured I would chime in since I have some experience with it. It did quiet it down nicely but it felt restrictive and dead on the low end until the augers broke lol it litterally didn't last a month though
The next one I would try from SW would be their Vintage Round. Its designed more like a traditional resonator.
I was really leaning toward the LNF resonator with a Moroso Spiral flow.
Or the ZZP 3 Chambered resonator. But I can't comment on it until I install it on my car.
Here is a vid of their 2.5" Cat-back on a Cobalt.
Cobalt SS/SC LSJ catback exhaust 2.5" ZZP - YouTube!
04-13-2012, 10:13 PM
#309
I think I'm going to go out on a limb and try ZZP's resonator. I didn't even know they came out of their own. I heard they were coming out with another. It says in the descripition it's like their old whisper resonator. The quieter my exhaust, the more I hear my TVS haha.
04-13-2012, 10:32 PM
#310
I thought I would post this link up because there's some good TVS info 
https://www.cobaltss.net/forums/dyno...-setup-276461/
https://www.cobaltss.net/forums/dyno...-setup-276461/
04-14-2012, 10:07 AM
#313
I will say this one more time and one time only. I run the gmp catback. I dont sell people on it simply said that it flows enough for my setup, and is THE BEST sounding catback system for our cars. Anyone that thinks the gmp doesn't flow better than the stock catback is smoking crack. When this exhaust first came out it was one of the only catbacks that had proven dyno gains of up to almost 9 hp without a tune. There is more to exhaust characteristics than just diameter. I'm done beating a dead horse the simple fact of the matter is for the money its a good catback it sounds the best and since i have run the fastest times on here that speaks for itself it terms of performance. Now I will say this I have never "hid" my other exhaust components and always tell everyone that asks my mods. I am running the vibrant equal lenghth header with downpipe but gutted the cat. To each his own but i am tired of hearing that the gmp won't suffice when no one else is running what I am. The gmp has more than proven itself to me and many others. Wes was running mid 12s and news flash he was also on the gmp. He was the second place guy to my 12.1.
04-14-2012, 03:41 PM
#317
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1 heet bottle, 12 fl. oz. and 1 gallon of -20 blue washer fluid is a pretty good 50/50 mix. three heets to one gallon of washer fluid? thats prolly like 90% meth
04-14-2012, 04:03 PM
#319
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lol yea, just figured id let you know, i mean i guess it would be ok to run it like that, but if your looking for a good 50/50, then one is all you will need.
04-14-2012, 04:30 PM
#321
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not to sure about exact percentage, i think heet (yellow bottle) is 99% and pending on which brand washer fluid you use, find the MSDS sheet for the product and it should give the differant %'s such as meth content/water content, then go from there.
04-14-2012, 06:37 PM
#323
I will say this one more time and one time only. I run the gmp catback. I dont sell people on it simply said that it flows enough for my setup, and is THE BEST sounding catback system for our cars. Anyone that thinks the gmp doesn't flow better than the stock catback is smoking crack. When this exhaust first came out it was one of the only catbacks that had proven dyno gains of up to almost 9 hp without a tune. There is more to exhaust characteristics than just diameter. I'm done beating a dead horse the simple fact of the matter is for the money its a good catback it sounds the best and since i have run the fastest times on here that speaks for itself it terms of performance. Now I will say this I have never "hid" my other exhaust components and always tell everyone that asks my mods. I am running the vibrant equal lenghth header with downpipe but gutted the cat. To each his own but i am tired of hearing that the gmp won't suffice when no one else is running what I am. The gmp has more than proven itself to me and many others. Wes was running mid 12s and news flash he was also on the gmp. He was the second place guy to my 12.1.