My New Exhaust System With An X Pipe, Removed everything but the rear Lsportline muff
03-16-07, 10:01 PM
#1
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My New Exhaust System With An X Pipe, Removed everything but the rear Lsportline muff
Well at first i though this was the stupidest thing i could ever do to my baby. After a few days of bedding it down with carbon it has become beautifully quiet except under load. Basically i had a shop remove everything from the cats including the flanges on them to replace it with new piping to replace the restrictive bends under the cats on the engine. It goes into a magnaflow xpipe and then to my 2 L-Sportline exhausts. All piping is made of stainless steel to last a lifetime just like my LS. I did not add any resonators which i thought i needed but not yet at least. Also moved the rear mufflers further back to stick out of the bumper by 1/2 and inch . It is not much but gives it a very meaning look. The car now sounds like a V8 finally when i hit the gas. I can;t believe i am driving a Lexus but once i am at cruising speed it is back to the quietness of mild wind noise as my only accompaniment. My performance has gotten much better as it will make the trac light go off so easily now even occasionally on 1-2 gear shifts. Gas mileage also seems to be getting better but it is also getting warmer and i don't idle the car as much to know for sure.
I'll post some pics and a sound clip later when the car is clean again.
I love it when i hit the gas and everyone looks around except at me since it is a Lexus. LOL
I'll post some pics and a sound clip later when the car is clean again.
I love it when i hit the gas and everyone looks around except at me since it is a Lexus. LOL
03-16-07, 10:07 PM
#2
NICE!!!
this is similar to the setup im going to have made in a few months
what size piping did u use? i know that the LSportline mufflers are 2" but i was gunna do 2.5 cat-midpipe to a downsize into the mufflers.
get us a video man
PS-how ya been man? havent heard from you in a while...
this is similar to the setup im going to have made in a few months
what size piping did u use? i know that the LSportline mufflers are 2" but i was gunna do 2.5 cat-midpipe to a downsize into the mufflers.
get us a video man
PS-how ya been man? havent heard from you in a while...
03-16-07, 10:30 PM
#4
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03-17-07, 11:32 AM
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I could never do a straight pipe or not cats. I like it just the way it is today nice and smooth . At start up it is deep but 3 second later as the idle settles down it disappears and you can' tell the car is running again.
03-18-07, 07:55 AM
#9
a friend of mine sold his twin turbo z06 and has two electric cutouts lying around. i'm thinking of getting them from him and putting them right after the cats then getting a shifter bezel that has a button for the air ride, hooking them up to the air ride button so i can control them and have the interior still look factory.
should sound pretty good.
should sound pretty good.
03-19-07, 07:38 PM
#11
This may be a dumb question but if you go with straight pipes from the exhaust headers (cats down from the engine) don't you have to remove an extra O2 sensor? I looked under my car 2day and I have O2 sensors on each down cat and then another after it splits into 1 pipe. Anybody get that
I was going to do it but my muffler shop said by removing the sensor (after the down cats) it could trigger an idiot light. SK - since you didn't get an idiot light I guess my guy is wrong. Too bad you can't get your LS in the air and take a full photo bro.
I was going to do it but my muffler shop said by removing the sensor (after the down cats) it could trigger an idiot light. SK - since you didn't get an idiot light I guess my guy is wrong. Too bad you can't get your LS in the air and take a full photo bro.
03-19-07, 09:54 PM
#12
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Your shop told you right there are 4 o2 sensors. 2 on each side one before and one after each of the 2 cats.
I removed the flange on the muffler side and the cats and welded the metal right to them . The o2 bung is after the flanges so the shop needs to weld a pair of o2 bungs on to thread the sensors back into. I welded right to them to increase the clearance from the cats being attached right to the exhaust manifolds. That being the way they are placed causes the pipe to have to make a very sharp bend to straighten out the flow or else it may bottom out. My bungs are welded slightly further back to allow the curve.
I removed the flange on the muffler side and the cats and welded the metal right to them . The o2 bung is after the flanges so the shop needs to weld a pair of o2 bungs on to thread the sensors back into. I welded right to them to increase the clearance from the cats being attached right to the exhaust manifolds. That being the way they are placed causes the pipe to have to make a very sharp bend to straighten out the flow or else it may bottom out. My bungs are welded slightly further back to allow the curve.
03-20-07, 12:07 AM
#13
please, pics and videoof your exhaust work... please.... i was wanting my ls400 to sound something like this gs400... does anyone know exactly what this guy is running? i tried messaging this guy but nothing... from the looks of it single in/dual out (each muffler), and thats about all i could tell... my absolute fav...
http://www.youtube.com/watch?v=RP3hFmr5hMk
this is also another nice sounding gs400...
http://www.youtube.com/watch?v=EGrAoDG2jRA
nice sound also...
http://www.youtube.com/watch?v=e1fwKQPBNdE
and one of my favs... looks of it, straight pipes, no mufflers...
http://www.youtube.com/watch?v=jCVrI87tnnM
http://www.youtube.com/watch?v=RP3hFmr5hMk
this is also another nice sounding gs400...
http://www.youtube.com/watch?v=EGrAoDG2jRA
nice sound also...
http://www.youtube.com/watch?v=e1fwKQPBNdE
and one of my favs... looks of it, straight pipes, no mufflers...
http://www.youtube.com/watch?v=jCVrI87tnnM
03-20-07, 12:34 AM
#14
a friend of mine sold his twin turbo z06 and has two electric cutouts lying around. i'm thinking of getting them from him and putting them right after the cats then getting a shifter bezel that has a button for the air ride, hooking them up to the air ride button so i can control them and have the interior still look factory.
should sound pretty good.
should sound pretty good.
03-20-07, 08:29 AM
#15
Your shop told you right there are 4 o2 sensors. 2 on each side one before and one after each of the 2 cats.
I removed the flange on the muffler side and the cats and welded the metal right to them . The o2 bung is after the flanges so the shop needs to weld a pair of o2 bungs on to thread the sensors back into. I welded right to them to increase the clearance from the cats being attached right to the exhaust manifolds. That being the way they are placed causes the pipe to have to make a very sharp bend to straighten out the flow or else it may bottom out. My bungs are welded slightly further back to allow the curve.
I removed the flange on the muffler side and the cats and welded the metal right to them . The o2 bung is after the flanges so the shop needs to weld a pair of o2 bungs on to thread the sensors back into. I welded right to them to increase the clearance from the cats being attached right to the exhaust manifolds. That being the way they are placed causes the pipe to have to make a very sharp bend to straighten out the flow or else it may bottom out. My bungs are welded slightly further back to allow the curve.