Is cutting the muffler off a bad idea? - Land Rovers Only

LANDY96 · 10-06-2006, 02:06 PM

Mine hangs down too much, and I think I will end up ripping it off! Will it affect back pressure if I do this. I have supplied a picture so you can see what I mean! Thanks!

Jarrodw · 10-06-2006, 02:49 PM

When I bought my RRC a few years ago that part of the exhaust was not there. I do not thank it has had an impact.
-Jarrod

daway · 10-06-2006, 02:50 PM

can u just hook it up on the muffler bracket or just tie it up some how? in the pic there is that steel tie up w/ holes (can't think of the name). if u cut it off it might get loud and do u have any state laws about mufflers?

Explorer4x4 · 10-06-2006, 05:37 PM

mine is cut off right after that last hanger. It felt faster 0-60, but that could be just because of the sound.

-MOSES- · 10-06-2006, 06:57 PM

If your talking about the rear mufler, YEs ! Its not going to hurt anything and it might sound a little beefier but not loud at all. you can re use you turndown tip to keep the clean look if you can tack it on.

TooSlowMonroe · 10-07-2006, 08:28 AM

I ripped my off up in the hills two years ago and have yet to do anything about it. Doesn't feel faster, hardly louder too. Now...the cracked exhaust header that also happened when I ripped the muffler off...that's a different story. I should probably get that fixed...

I can send you pictures if you like...it's funny seeing yours and seeing what I've been missing for a few years.

LANDY96 · 10-07-2006, 01:19 PM

Quote:

Originally Posted by daway

can u just hook it up on the muffler bracket or just tie it up some how? in the pic there is that steel tie up w/ holes (can't think of the name). if u cut it off it might get loud and do u have any state laws about mufflers?

I mean to say it is bracketed in that way. It cannot move. I can tell the PO did something bad to the exhaust system. The pipe is crimped, and twisted in some spots, and apperently he had an exhaust shop bend it back, and just weld a cheap muffler on. It looks terrible, and is in a bad position, I just want to cut it off, and connect a strait pipe, and make it higher.

Thanks for the input people, I will just cut it off!

RageRover · 10-07-2006, 02:55 PM

Believe it or not, there is such a device called an Exhaust Backpressure guage.

SOunds funny, but I have used these things before.

If you have no backpressure, it can create a sight hesitation, unless you're timing is advanced a bit. That's why when I put the glasspack on my exhaust, in place of the huge muffler in the center, and hacked the rear resonator, like the one shown in the above pic, my timing needed some adjusting. I am willing to bet that when I did the exhaust on my truck, the back pressure went from like 5 psi, to like 2-3 psi. No psi, is bad, not good for a daily driver. Too much, you have clogged cats, and/or muffler(s).

Either way, I did the exhaust, just messin' with sound and backpressure, and all-in-all, my truck has better running performance, and I have tested my truck at college with a 5 gas analyzer, and my truck passed emissions.

Explorer4x4 · 10-08-2006, 12:33 PM

the rear muffler is was the only muffler on my '88, so now I have no muffler

keptin · 10-08-2006, 12:48 PM

chop dat puppy off!!!!! No regrets.

There is plenty of back pressure still....I wouldnt worry.

nfrey2 · 10-08-2006, 03:26 PM

My hung down to low also, cut it off and put in a 90degree elbow. I have not noticed any change in performance other than it got a little more of a grumble to it.

LANDY96 · 10-08-2006, 04:16 PM

Quote:

Originally Posted by nfrey2

My hung down to low also, cut it off and put in a 90degree elbow. I have not noticed any change in performance other than it got a little more of a grumble to it.

Dude.....I like that, I had thought of a "turn-down", but not out of the side. I will do that!!!

p76rangie · 10-08-2006, 04:39 PM

Be careful when putting it out the side so that it does not stick out past the quarter panel. Otherwise you are likely to ram it up through the quarter panel if going over steps off-road

nfrey2 · 10-08-2006, 05:29 PM

i positioned it as close as i could to the inside of the wheel well. That tire in full compression wont touch the exhuast but it gets close and its so tucked up in there i would have to drop that rear tire off a 90 vertical with zero forward velocity in order to bump it. Its a very out of the way spot, much better than the factory set up.

Funrover · 10-08-2006, 06:16 PM

CUT IT OFF!!!! You don't need it...... It wil only catch while wheeling.... Ask discodude19 what happened to his....... I have not had mine on in roughly 3.5 years.... No problems here!!!

10-06-2006, 02:06 PM	#1 (permalink)
LANDY96 Senior Member Join Date: Jan 2005 Location: Beaumont, Texas Posts: 781 Gallery: 0	Is cutting the muffler off a bad idea? Mine hangs down too much, and I think I will end up ripping it off! Will it affect back pressure if I do this. I have supplied a picture so you can see what I mean! Thanks! Attached Thumbnails __________________ Eric The Red 93 Range Rover Classic We will never "arrive" so the goal is to keep moving forward on our journey so we can periodically declare, "I am not what I want to be, but I am not what I used to be!" 96 DISCO SE7 5-SPEED SOLD ....okay couldn't live without a disco! 96 DISCO SD 5-SPEED -ARB Bumper -OME 2" Lift -2" spacers -Safari snorkel -15" steelies

10-06-2006, 02:50 PM	#3 (permalink)
daway Senior Member Join Date: Apr 2006 Location: St. Croix Valley, MN Posts: 1,295 Gallery: 0	can u just hook it up on the muffler bracket or just tie it up some how? in the pic there is that steel tie up w/ holes (can't think of the name). if u cut it off it might get loud and do u have any state laws about mufflers? __________________ 1993 RRC, county LWB "bertha" 1991 RRC (dad's), parting out (email me or check out the link below) myroverworld Last edited by daway : 10-06-2006 at 07:42 PM.

10-06-2006, 05:37 PM	#4 (permalink)
Explorer4x4 who that is?™ Join Date: Feb 2006 Location: Oxford, MS Posts: 152 Gallery: 0	mine is cut off right after that last hanger. It felt faster 0-60, but that could be just because of the sound. __________________ 1995 Disco on 33's 1988 Range Rover- trimmed fenders, big rack, HIDs,... 2000 Turbocharged Explorer 5.0 AWD....'tis fast 2005 Ford F150 4x4... company vehicle

10-06-2006, 06:57 PM	#5 (permalink)
-MOSES- The MoFab Man Join Date: Apr 2006 Location: Tejas Posts: 439 Gallery: 0	If your talking about the rear mufler, YEs ! Its not going to hurt anything and it might sound a little beefier but not loud at all. you can re use you turndown tip to keep the clean look if you can tack it on. __________________ * * http://www.MoFab.org * * * Are you gonna pass that ?? * 99' D1 55' S1 86" RHD SW 00' RR 4.6 HSE My Favorites: http://www.texasrovers.com/ http://pikespeakrovers.com/ http://oeminstock.com/ http://greatbasinrovers.com/ http://MyRover.net/ Yep, thats my truck in the avatar....

10-07-2006, 08:28 AM	#6 (permalink)
TooSlowMonroe my name is Todd, and I'm a rovaholic Join Date: Sep 2006 Location: '95 RRC LWB in IDAHO, usa Posts: 91 Gallery: 0	I ripped my off up in the hills two years ago and have yet to do anything about it. Doesn't feel faster, hardly louder too. Now...the cracked exhaust header that also happened when I ripped the muffler off...that's a different story. I should probably get that fixed... I can send you pictures if you like...it's funny seeing yours and seeing what I've been missing for a few years. __________________ '05 Scion xB '91 Mercedes 300SE '95 Range Rover Classic LWB '60 Ford F-250 '78 Ranger20 Sailboat '71 Melges M-20 Scow Sailboat TRY? There is no TRY. There is DO and DO NOT. -yoda

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10-06-2006, 02:49 PM	#2 (permalink)
Jarrodw Skiving Join Date: Apr 2006 Posts: 39 Gallery: 0	When I bought my RRC a few years ago that part of the exhaust was not there. I do not thank it has had an impact. -Jarrod

10-07-2006, 02:55 PM	#8 (permalink)
RageRover Crazy about Rovers and more... Join Date: Dec 2005 Location: Westland, MI Posts: 2,887 Gallery: 0	Believe it or not, there is such a device called an Exhaust Backpressure guage. SOunds funny, but I have used these things before. If you have no backpressure, it can create a sight hesitation, unless you're timing is advanced a bit. That's why when I put the glasspack on my exhaust, in place of the huge muffler in the center, and hacked the rear resonator, like the one shown in the above pic, my timing needed some adjusting. I am willing to bet that when I did the exhaust on my truck, the back pressure went from like 5 psi, to like 2-3 psi. No psi, is bad, not good for a daily driver. Too much, you have clogged cats, and/or muffler(s). Either way, I did the exhaust, just messin' with sound and backpressure, and all-in-all, my truck has better running performance, and I have tested my truck at college with a 5 gas analyzer, and my truck passed emissions. __________________ Pat Albaugh, Midwest Moderator "Diffage" -the point at which the truck's differential makes contact with the ground. http://www.cardomain.com/id/RageRover42Visit my RRC and others here!(updated as of September 15, 2006) 1995 RRC LWB -LT265/75R16 Pathfinder All Terrains -RTE 2" Lift Springs -Pro Comp ES9000 Shocks (from DAP Enterprises) -KMC Front Diff Guard -4 Desert Fox 55 watt Lighting -Radio Shack CB Radio (never know when signal fails on a cell phone) -2 Halogen Super Sport 100 watt forward lights -Brush Gaurd, meant for a Jeep Grand Cherokee, now fitted to the RRC -Lowe's Special "Homemade" Snorkel -T-Case out of an 92' RRC

10-08-2006, 12:33 PM	#9 (permalink)
Explorer4x4 who that is?™ Join Date: Feb 2006 Location: Oxford, MS Posts: 152 Gallery: 0	the rear muffler is was the only muffler on my '88, so now I have no muffler __________________ 1995 Disco on 33's 1988 Range Rover- trimmed fenders, big rack, HIDs,... 2000 Turbocharged Explorer 5.0 AWD....'tis fast 2005 Ford F150 4x4... company vehicle

10-08-2006, 12:48 PM	#10 (permalink)
keptin Roads?...Where we're going, we don't need roads... Join Date: Oct 2005 Location: Reno, NV Posts: 2,365 Gallery: 0	chop dat puppy off!!!!! No regrets. There is plenty of back pressure still....I wouldnt worry. __________________ Josh Shapiro DII Photos at www.kep1.com

10-08-2006, 03:26 PM	#11 (permalink)
nfrey2 I drink too much Join Date: Dec 2005 Location: Tampa, Florida Posts: 309 Gallery: 0	My hung down to low also, cut it off and put in a 90degree elbow. I have not noticed any change in performance other than it got a little more of a grumble to it. __________________ Nic 91 RRC Hunter Edition "The Warthog" Made a bunch of stuff fer it. USF Racing

10-08-2006, 04:39 PM	#13 (permalink)
p76rangie Ian Matthews Join Date: Jan 2006 Location: Melbourne Australia Posts: 1,959 Gallery: 0	Be careful when putting it out the side so that it does not stick out past the quarter panel. Otherwise you are likely to ram it up through the quarter panel if going over steps off-road

10-08-2006, 05:29 PM	#14 (permalink)
nfrey2 I drink too much Join Date: Dec 2005 Location: Tampa, Florida Posts: 309 Gallery: 0	i positioned it as close as i could to the inside of the wheel well. That tire in full compression wont touch the exhuast but it gets close and its so tucked up in there i would have to drop that rear tire off a 90 vertical with zero forward velocity in order to bump it. Its a very out of the way spot, much better than the factory set up. __________________ Nic 91 RRC Hunter Edition "The Warthog" Made a bunch of stuff fer it. USF Racing

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