Muffler Delete mod and stock parts pics
06-10-03, 11:14 AM
#1
Lexus Champion
Thread Starter
Muffler Delete mod and stock parts pics
Several people have asked about my "muffler delete" mod. I thought I would help clarify this by posting pics of the stock system and showing where to remove the mufflers. I will also take the opportunity to post pictures of the stock components and discuss what to expect if you modify or change parts.
06-11-03, 11:55 AM
#2
Lexus Champion
Thread Starter
Tools: vise grips, 12mm socket wrench.
Step one: safely raise the rear of the car (jack stands, ramps, lift).
Two: loosen but do not remove the 12mm bolt in each of the 2 band clamps between the silencers and rear mufflers (see pic)
Notice the piping under the band clamps is split. Once the hanger is loose you need to wiggle the muffler side to side and up and down to slightly expand the split pipe under the clamp.
Step one: safely raise the rear of the car (jack stands, ramps, lift).
Two: loosen but do not remove the 12mm bolt in each of the 2 band clamps between the silencers and rear mufflers (see pic)
Notice the piping under the band clamps is split. Once the hanger is loose you need to wiggle the muffler side to side and up and down to slightly expand the split pipe under the clamp.
Last edited by JBrady; 06-11-03 at 11:57 AM.
06-11-03, 12:02 PM
#3
Lexus Champion
Thread Starter
Next: take the vise grips and snugly grip and lock over the rubber "O" ring shown to the left in the below picture (this is the left side, on the right side it is opposite). Pull the "O" ring down and off the metal bracket on the muffler. The ring will stay on the car. This is NOT easy as the ring is strong rubber so be careful. Once this ring is off the muffler will drop slightly and the other ring will be removed from the car and stay on the mufflers bracket.
Last edited by JBrady; 06-11-03 at 12:03 PM.
06-11-03, 12:10 PM
#4
Lexus Champion
Thread Starter
Now: as stated above, wiggle the muffler back and forth and up and down to expand the split piping at the clamp. With some work and twisting the muffler will slide off. Do this on both sides. Your car will now have the "muffler delete mod" 
I personally leave it like this. The silencers become the "final" mufflers and do a surprising job of quieting the car. Noise levels go up only slightly. Car will sound stronger but not LOUD. You could reduce in car sound by having a muffler shop make extentions from the silencers. For me it is not an issue. You decide.
It is difficult to say if this mod increases power measureably, maybe a couple horsepower, the rest of the system is just too restrictive BUT you definitely save weight and sound stronger.
Here is a pic showing the open silencers
I personally leave it like this. The silencers become the "final" mufflers and do a surprising job of quieting the car. Noise levels go up only slightly. Car will sound stronger but not LOUD. You could reduce in car sound by having a muffler shop make extentions from the silencers. For me it is not an issue. You decide.
It is difficult to say if this mod increases power measureably, maybe a couple horsepower, the rest of the system is just too restrictive BUT you definitely save weight and sound stronger.
Here is a pic showing the open silencers
06-12-03, 08:38 AM
#6
Lexus Champion
Thread Starter
Lee, I know YOURs is a LOT different 
But seriously, the 1st gen has some differences but is essentially the same layout. The muffler delete mod should work just fine.
But seriously, the 1st gen has some differences but is essentially the same layout. The muffler delete mod should work just fine.
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06-20-03, 02:04 AM
#8
Ive used this delete mod for my 929 (I got the idea here), I removed a very large RV sized muffler and replaced it with a straight pipe and a 3.5" tip, it sounds sweet with a nice gurgle and isnt loud at all (until I change the resonator) the HP gain is also very nice
08-26-07, 04:41 PM
#11
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Leave it open? That's just GHETTO man.
I found this thread in the sticky at the top of the page for FAQs. I would assume it was put there so other people could see it and ask questions if necessary. Especially since the post is not too explanatory.
I found this thread in the sticky at the top of the page for FAQs. I would assume it was put there so other people could see it and ask questions if necessary. Especially since the post is not too explanatory.
10-16-11, 12:35 PM
#12
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I have a question concerning that when you do the muffler delete, when it dumps out hot gases could the heat of the exhaust melt the CV boots above? I started to proceed with this mod and noticed this and decided to put them back on because I don't want to replace my CV boots frequently. I can deal with a little bit of smell in the cabin, I can just roll down the windows but the CV Boots concern me.
10-16-11, 03:05 PM
#13
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I hate to be Debbie downer, but keep in mind exhaust gasses are corrosive, if you plan to keep your vehicle for a while having some pipes bring it to the back would be a good idea. should be pretty cheap also, the rubber of the CV boots could be affected also, not only from heat but also chemicals in the exhaust stream.
10-16-11, 03:12 PM
#14
The suggested fix would be to have your favorite muffler shop make some extensions or at simple best, your local auto parts for some tips to direct the exhaust down-away.
This mod usually leads to other exhaust mods so it is a temporary situation.
Then you want the proper piping and run an X pipe and duals out the back. Or the Y merge into a single. (The Y-pipe into a single is what I would do but I'm far to penny pinchy these days. )
This mod usually leads to other exhaust mods so it is a temporary situation.
Then you want the proper piping and run an X pipe and duals out the back. Or the Y merge into a single. (The Y-pipe into a single is what I would do but I'm far to penny pinchy these days. )
