4" dumped at the axle
Thread Starter
Joined: Nov 2005
Posts: 2,148
Likes: 4
From: Gainesville, GA
4" dumped at the axle I've been racking exhaust options back and forth in my head, and lately one has been standing out as a decent option: Just put a muffler in the I pipe and dump it. FYI, I've got a 4" Flowmaster merge on my pacesetter Y pipe (great ground clearance). Obviously, ground clearance is going to be sacraficed if I go this route, and yes I do plan on lowering the car in the future, so I was thinking about my options on the muffler. Borla makes a nice looking 4" XR-1 that is 4.5" tall and available in several lengths. Dynatech makes a few too, but from what I gather they are VERY loud, something I would kinda like to stay away from. So, I may be asking the impossible: Fairly quiet and decent ground clearance. Flow isnt going to be an issue 
Any muffler recommendations would be freakin awesome. The quieter the better. This would also be a very light weight exhaust system 
Any muffler recommendations would be freakin awesome. The quieter the better. This would also be a very light weight exhaust system Thread Starter
Joined: Nov 2005
Posts: 2,148
Likes: 4
From: Gainesville, GA
DD... for now. I have my Hooker muffler with no tail pipes on it, not turned down but just out. Its mellow inside, not really loud. One day the car will hopefully be a nasty FI monster... leaning toward the autocross world. I enjoy the dumped sound, but just don't really want to increase the volume a whole lot. I imagine having the 4" turndown would make for a really deep tone. Another option I thought of was the cone insert. Still need a muffler idea though.
Thread Starter
Joined: Nov 2005
Posts: 2,148
Likes: 4
From: Gainesville, GA
Dynatech's Split Flow 4" muffler is 4.5" tall and 14" long. About $100 cheaper than the borla. I am thinking this muffler combined with the cone/turndown would make for an awesome setup. Does anyone have experience with the 4" Splitflow? Howbout the cone?
Thread Starter
Joined: Nov 2005
Posts: 2,148
Likes: 4
From: Gainesville, GA
How about the Spintech oval 4"? I know its a spintech, and they arent exactly known for their superior flow qualities, but its all oval tubing! They have an oval transition, the 4" oval inlet, then a 4" oval dump. And its all 3.5" tall!!!! The muffler would actually be higher up than my Y pipe merge. hmmm... I need some input on this PM me if you would like the links to the products I speak of.
PM me if you would like the links to the products I speak of. 
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iTrader: (10)
Joined: May 2005
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From: Bossier city,LA barksdale AFB
ok i have pacesetter lt & tsp 3" ory with 3" magnaflow bullet muffler clamped to the ypipe hooked up to a slp lm catback ran out the back. Well now everything is the same but i lost from the axle back and have it dumped at the rear end and it sounds a million times better and 100% no rasp!!!!! The drown going down the HWY is gone and i can hear my radio. never in a million years i would of thought that it would of got quieter and loss the minor rasp that i had! sound mean at WOT
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Last edited by SIC LSX; Oct 22, 2008 at 12:32 AM.
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Almost all bullet muffler will sound about the same i just got mine for free.