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Exhaust redo

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Posted by: NickT88LSC

I am going to redo my exhaust. I was wondering if anyone has a sound clip of an LS that just has a center muffler and no rear mufflers. When I did NYC LS8's exhaust we started it with just the center muffler and 2 long pipes and it sounded pretty good, but that was on the lift, so I wanted to try to hear it driving if anyone has one or knows where there is a sound clip. I searched you tube and all LS's I found have the rear mufflers.

Posted by: owlman

When we did mine I did a quick drive around the parking lot and it sounded cool but way too loud. SOrry no video. Just watch one with mufflers and turn your volume way up

Posted by: workin_ike

Looks like you'll have to be the pioneer and do it first.

Posted by: NickT88LSC

Quote:

Originally Posted by owlman

When we did mine I did a quick drive around the parking lot and it sounded cool but way too loud. SOrry no video. Just watch one with mufflers and turn your volume way up

When I heard it while doing NYC LS8's car he used a 14" body muffler, it was loud also, I am getting a 18" body muffler, hopefully tune it down a little bit.

Posted by: NYC LS8

Yo...got that X-pipe yesterday!!

Posted by: NickT88LSC

Quote:

Originally Posted by NYC LS8

Yo...got that X-pipe yesterday!!

Cool deal, we can now call you "Tommy double X", go for 1 more so we can call you "Triple X"

By the way, I tried to get another one, all out, blah!!!

Posted by: NickT88LSC

Ok, for those of you who like video's and sound clips, I redid my exhaust today. I used a magnaflow 18" body muffler with built in X-pipe dual in/out in the center of the car and added a second X-pipe, no rear mufflers.

http://www.youtube.com/watch?v=2Hh9bV7kFcI

Posted by: JWerner2

I kind of like that.

Do you plan on posting something while driving and some pics of the system?

Posted by: NYC LS8

That video doesn't do it justice. Sounds like your camera's microphone is too close. I knew I shoulda taken one as you were backing it off the lift!!! Sounded awesome!

Can't believe removing the mid-muffler on my car and replacing it with another X seems to have made it quieter

Anyways, here's some pics I took:

Old system:

Trimmed rear valance:

Partially done:

Side view of new muffler:

The master at work:

Posted by: rickztahone

nice, didn't you have a rasp noise before?

Posted by: lincoln00

just replaced rear mufflers with striat pipe...

Posted by: lincoln00

how much for the old system..

Posted by: NYC LS8

Rick - yeah he had a rasp to his exhaust, which is why he went this route.

00 - He's sending the exhaust to his old man in Florida who also has an LS.

Posted by: lincoln00

cool... I was also wondering were you guys were getting the x pipes.. I really like the one muffler idea.. did he notice a performance gain

Posted by: NYC LS8

Found them on eBay for 27 bucks shipped. Don't think the guy has any more or I'd send you the link.

Posted by: rickztahone

Quote:

Originally Posted by NYC LS8

Rick - yeah he had a rasp to his exhaust, which is why he went this route.

00 - He's sending the exhaust to his old man in Florida who also has an LS.

rasp gone?

Posted by: NateRW21

a bit too loud for my taste.

I'm thinking about deleting the resonators on my 03 and installing a couple magnaflow mufflers in replace of the factory muffs.

Any of you done this that can comment as to if it will be raspy? Remember; I still have a third cat...

Posted by: NYC LS8

I'm pretty sure Nick said that the rasp is pretty much gone when I talked to him yesterday after we both got home. It could just be much less know and it's harder for him to tell from inside the car.

We removed my mid-muffler and replaced it with another X pipe (so that's two back to back) and left the rear mufflers. I got on it tonight into the upper RPMs and I get a little raspiness. If I don't go with camthman's resonators and mufflers, I'm gonna put the mid-muffler back with the two Xs and remove the rear mufflers and see what happens.

And just an FYI, but we both have the stock cats right off the stock exhaust manis.

Posted by: NickT88LSC

Quote:

Originally Posted by NYC LS8

I'm pretty sure Nick said that the rasp is pretty much gone when I talked to him yesterday after we both got home. It could just be much less know and it's harder for him to tell from inside the car.

We removed my mid-muffler and replaced it with another X pipe (so that's two back to back) and left the rear mufflers. I got on it tonight into the upper RPMs and I get a little raspiness. If I don't go with camthman's resonators and mufflers, I'm gonna put the mid-muffler back with the two Xs and remove the rear mufflers and see what happens.

And just an FYI, but we both have the stock cats right off the stock exhaust manis.

That would be ideal I think, your small center muffler with either 1 added x, or both x's.

As far as my raspyness, I am gonna need to take a moving clip to tell, cause while driving I deff. dont hear it, I think it gets that when in park reving it, not while there is a load, I will have to see. Is is louder and deaper though, I like it

Posted by: rickztahone

Quote:

Originally Posted by NateRW21

a bit too loud for my taste.

I'm thinking about deleting the resonators on my 03 and installing a couple magnaflow mufflers in replace of the factory muffs.

Any of you done this that can comment as to if it will be raspy? Remember; I still have a third cat...

Nate i have a setup like you mention and i do get a rasp noise. i have the magnaflow mufflers and no resonators, stock piping though. i've been trying to figure out how to get rid of it but it seems nick found a way. do you think it would be necessary nick or NYC (sry NYC i always refer to you as such due to the fact that i do not know your name) to have the X or you think the mid-muffler might get rid of it alone? then again, i'm just wondering if i re-install my resonators will it go away? i have them in my garage

Posted by: lincoln00

has anyone thought of doing an H pipe... I believe the H pipe is a Trq gain and the X is a HP....correct me if i'm wrong

Posted by: NYC LS8

X is the torque gain, H is for HP.

Rick - I know for a fact that I had no rasp with 1 X, mid muffler (which wasn't really an X inside) and the two rear mufflers. This is with 2.5" piping from the cats back. I know I heard some yesterday with the woman in the car asking her if the car sounded the same, because it kind of does at idle and light throttle, but when I get on it and go WOT it sounds throatier with a tad bit of rasp...from what I can tell from inside the car. The car also feels like it's picked up a tiny bit more oomph and pulls harder/more responsive. But that could be that my butt dyno needs to be recalibrated.

Oh yeah, and it's Tommy.

Posted by: NickT88LSC

I wanted to also add and H in the exhaust along with the x, but time constraints did not allow. I will probably add the H, may also go to a smaller muffler like Tommy's cause of ground clearance. The 5x8 body muffler dual in/out is the smallest body with the built in x, but hangs a little low, so according to how much bottoming out I do will tell if it stays

Posted by: 00greenls

I have 2000 ls 3.9 v-8 with the rear mufflers cut off and the stock resonators left on and it sounds mean. It is not too loud and i don;t hear any drone. the car definitely has more power. Keep in mind though that my factory exhaust is 2.25 from manifolds to end of resonators then it goes down to 2 inch for the tailpipes. i had straight 2inch pipes welded in replace of factory mufflers. My plans are to add an h-pipe cut off resonators and replace with slp loudmouth resonators and have tailpipes be 2.25 like the rest of the exhaust. The reason you may be getting too much drone or it is too loud is because you have 2nd generation with 2.5 inch pipes which will increase the volume of your exhaust. if you get drone it is also likely because of how our exhausts are placed under the rear bumper which will make the exhaust sounds and pulses bounce off the rear bumber and under carriage giving you the drone. you can experiment by making your tailpipes go down into 2.25 which should quiet it down and probably give you more torque to boot. Our exhausts were designed to be quiet not for performance. they also were designed to give us torque for our small engine because we don't have much to begin with. if you go from the engine bigger to smaller it will cut noise and increase torque because of creating more back pressure the little engine needs.To increase the exhaust size in our cars is overkill unless you want more noise and less torque and performance. We do not have sport car motors like mustangs otherwise we could fiddle with exhaust but only to gain a measly few extra hp anywayand not the bs claims from manufacturers and companies. I've owned 6 v-8 mustangs and i know!!!

Posted by: NYC LS8

Quote:

Originally Posted by 00greenls

I've owned 6 v-8 mustangs and i know!!!

Gotcha.

We know nothing! Except how to make a 4000 pound car go 11s (Nick's) and 12s (mine).

Posted by: lincoln00

piping size does effect drone... thats why my strait pipe dont have it.. its stock size gen 1 with 2 inch and 2.25

Posted by: NYC LS8

We're not going for loud, though. We've been there, done that. We do not want straight pipes since we've already had cars far faster that we raced. We're going for a specific sound. My car doesn't drone, the two x pipes help eliminate that.

Posted by: workin_ike

Quote:

Originally Posted by NYC LS8

X is the torque gain, H is for HP.

So NYC, you have 2 X pipes? is this proven better? What if I did one of each?
I already had the post "X vs H pipes" but I am getting all the info I can for when I do my exhaust. not anytime soon though.

I am new to exhaust setups. I only did one full exhaust before on my 71 Impala. I really dont know much about the LS either, I have always been a Chevy fan (Still am). This is my 3rd Ford of 13 cars/trucks (89 Escort, 84 Mustang and the LS) and I actually use to dispise Ford. But The LS is a whole nother league.

Posted by: NYC LS8

I did it just to see what would happen, since Nick found a few of them on eBay for like 28 bucks shipped. Figured what the hell, remove my mid muffler, put another X in it's place and see what happens. Like I mentioned, it feels like it has a little more grunt, but that can be all in my head.

One of each? I don't know. I can't see exhaust gasses making 90 degree turns. Nick mentioned above doing that on his car. Maybe he'll do it the next time we're at his friend's shop.

Posted by: lincoln00

where did you get your dual in dual out muffler... i'm looking to get one in a 2.25... just going to dump it at the rear axle...

Posted by: NYC LS8

Some dude that ran an exhaust supply shop in NJ that's now out of business. Try eBay - there's always a bunch of Maganaflow stuff on there.

Posted by: lincoln00

Yea i found a couple on ebay... about 100 bucks plus shipping... alot better the 300 for two mufflers.

Posted by: lincoln00

Quote:

Originally Posted by NYC LS8

Partially done:

do you remember what the length was on that muffler.... all i have found is 5x8 was it a 18" muffler or 11" hard to tell by picture

Posted by: NYC LS8

I wouldn't go with that muffler if your car is lowered. Look at the side picture I took. Nick has Sprint springs in his car with 18s and that muffler is the lowest point on the car. I forget what the actual size is. Hopefully Nick chimes in and tells ya.

Posted by: lincoln00

No not lowered... I found one that is a d/d 2 1/4. 4x9x14. think it would fit nice in there..

Posted by: NickT88LSC

Quote:

Originally Posted by lincoln00

where did you get your dual in dual out muffler... i'm looking to get one in a 2.25... just going to dump it at the rear axle...

ANyone that sells magnaflow mufflers, I beleive Walker dynomax might have them too, not 100 percent possitive on that one though. Check on the magnaflow website

Posted by: lincoln00

do all the d/d mufflers magnaflow makes a x-pipe in side?

found this one...
http://cgi.ebay.com/ebaymotors/MAGNA...4506.m20.l1116

Posted by: NickT88LSC

That does not have the x, but you can add an external x, thats what we will probably try nexy on NYC LS8's car, his muffler is like the one you posted on ebay but in 2 1/2.

http://www.magnaflow.com/02product/s...e=main&id=7442

This one has the x built in, see description, I paid 85 for mine

http://www.magnaflow.com/02product/s...e=main&id=7671

Gotta warn though, if your car is lowered and you use the 5 x 8 size muffler it is low, speed bumps are you enemy, I may be going the 4" body muffler on mine with external x also??

Posted by: NYC LS8

Yeah, I think we should put that other muffler back in with the two X's and yank out the rear mufflers....see if that sounds a little bit better or not.

Posted by: lincoln00

yea i probably will had a x then...

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