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since you are under budget, return the rear muffler section or the pair of resonators and see if that quiets it down to your liking. it will still have a rumble, just not a head-ache inducing one.
my LS is straight piped as well, custom 2.25 in. piping from the cat back but i left my stock mufflers intact for this purpose (to reduce drone). all three resonators were removed for mine.
you can hear some slight drone in the 2k rpm range but other than that it pretty much sounds stock unless you get on it. idk how the early model (90-94) LS' exhaust layout is, but the rear muffler section where it splits, there should be a clamp on both sides in which you can loosen and then remove the mufflers if you wanted to ever do the muffler delete (it's pretty damn loud and i've driven around without the rear mufflers and i'm surprised i still haven't got pulled over for it *knock on wood*).. anyways, that's the route you should've took in the first place to avoid major drone.
but like everyone else is saying, your best bet to reduce the drone is to slap on a pair of mufflers where the stock mufflers used to be (in your case, gone, since you had it straight piped).
my LS is straight piped as well, custom 2.25 in. piping from the cat back but i left my stock mufflers intact for this purpose (to reduce drone). all three resonators were removed for mine.
you can hear some slight drone in the 2k rpm range but other than that it pretty much sounds stock unless you get on it. idk how the early model (90-94) LS' exhaust layout is, but the rear muffler section where it splits, there should be a clamp on both sides in which you can loosen and then remove the mufflers if you wanted to ever do the muffler delete (it's pretty damn loud and i've driven around without the rear mufflers and i'm surprised i still haven't got pulled over for it *knock on wood*).. anyways, that's the route you should've took in the first place to avoid major drone.
but like everyone else is saying, your best bet to reduce the drone is to slap on a pair of mufflers where the stock mufflers used to be (in your case, gone, since you had it straight piped).
Looks like that's what i'm gonna do, I took it to budget brake & muffler for the muffler delete and they did a **** job, ****ty pipe, ****ty welds and not even mandrel bent, all crimped and stuff. I could see the ****ty welds and bad pipe they used enhancing the drone
Looks like i'm getting Pypes M80s! mustang wheels first, then mustang exhaust, lols. LStang400 basically
Has anyone removed all the mufflers after the resonator. If so is there a sound clip? and how is the drone?
Currently I have removed the rear two mufflers and the initial start sounds decent but i know it needs more. I will be doing a full custom setup down the road but for now I was wondering if removing the "pre-mufflers" on top of removing the rear mufflers would make it sound any better and louder?
The car sounds great but there is A LOT of drone. Not to mention there was a lot of rattles coming from inside and outside (most likely heatshields) the car. Here's a video clip of me accelerating at around 1/4 throttle; it was unbearably loud inside and I put the mufflers back on first thing the next day.
thanks for the info. I guess I will keep my system as is and will remove the pre-mufflers and after the resonator add a Y pipe and straight to the rear and add some magnaflows. im still not sure if i want to do a 2.5in pipe or 2.25in pipe. also I see many various magnaflow part numbers. is there a particular one to use for our cars. I will be adding my own tips, so I know i dont want any with a tip on them.
is there any difference in noise or drone if I replace the pre mufflers with magnaflows vs places the mufflers in the rear by the bumper?
Placing the mufflers further near the bumper should reduce the amount of noise you hear inside the cabin; I'll be doing this sometime in the future with a new Y pipe and two mufflers by the bumpers. As for part numbers, I'm not too certain. I've seen some videos on YouTube but as you know, exhaust clips aren't 100% accurate when recorded than in person.
Placing the mufflers further near the bumper should reduce the amount of noise you hear inside the cabin; I'll be doing this sometime in the future with a new Y pipe and two mufflers by the bumpers. As for part numbers, I'm not too certain. I've seen some videos on YouTube but as you know, exhaust clips aren't 100% accurate when recorded than in person.
looking over many many forum posts it looks like 2.25in piping is the best along with a X-Pipe. So I'll be removing the resonator and the pre mufflers and placing two magnaflows in the rear. I found
Magnaflow 11365 would fit nicely in that spot.
I wish I knew what setup he has, cause this sounds perfect.
Do a search on side branch resonator. Same sound but cancels out drone without exhaust restriction. Have this done on Z. Stock quiet at cruising speeds. Google is your friend
06-03-13, 03:09 PM
