Really Need Advice on Exhaust Leak
04-29-08, 05:27 AM
#31
Lead Lap
Thread Starter
Price for the complete exhaust on mine if I remember correctly was about $4800 OEM... I think I see the discrepancy... Mine has a catalytic converter that is part of the front Y pipe, some don't... Here's an OEM quote for the Y pipe. Two different styles within the same years... List and Selling Price for each...
Front pipe, ls400, federal 91-92 $2,035.42 $1,730.11 (Catalytic Style)
Front pipe, ls400, federal 90-94 $480.96 $408.82
Front pipe, ls400, federal 91-92 $2,035.42 $1,730.11 (Catalytic Style)
Front pipe, ls400, federal 90-94 $480.96 $408.82
I see you are in Mass. so your car must have a Calif emission setup...Born on the West Coast i guess.
04-29-08, 01:28 PM
#32
Driver
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well i guess my question now is, the x pipe is hallow allowing more flow, and the oem Y cat pipe isnt hallow allowing for more backpressure. would my car b fine with what the Mustang guys call "catless Xpipe" or should i get a cat like x or y pipe for more backpressure?
04-29-08, 08:53 PM
#35
Lexus Test Driver
I don't believe so. The car was purchased new in MA... Massachusetts often follows close behind CA when it comes to environmental reg's. I can only assume that this is the reason for it having the CAT on the end of the Y pipe here in MA...
04-30-08, 07:30 AM
#38
Lead Lap
Thread Starter
Maybe someone can throw additional light on this subject..also what would be the drawback (if any) to swapping the original front pipe with cat with a pipe that has a resonator?
04-30-08, 09:41 AM
#39
Lexus Test Driver
04-30-08, 10:01 AM
#40
Lead Lap
Thread Starter
So if you live in a state that has no emission testing or less strict than Calif you can just replace the pipe with w/o the cat and who would complain? The car already has 2 cats how much more reduction will be achieved by the 3rd cat? just postulating here 
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04-30-08, 04:22 PM
#41
Lexus Test Driver
Yes, you very well could.
06-04-12, 12:42 PM
#42
Hey guys,
Quick question:
I had my starter replaced not too long ago on my 2LS, and ever since the mechanic took my intake manifold off, as well as that skinnier copper/brass looking pipe off the back of the intake manifold, I've been having this "traktor-like' exhaust leak coming from somewhere around the back of my motor. I did some self-testing, I had my gf sit in the car and give it small squirts while I was under the car, and none of the fitted exhaust components/gaskets seem to be leaking. I was wondering if anyone did a DIY on replacing, maybe fixing that smaller pipe which seems to be leading up from the manifolds to the intake/upper head assembly.
Thx for the help in advance
Quick question:
I had my starter replaced not too long ago on my 2LS, and ever since the mechanic took my intake manifold off, as well as that skinnier copper/brass looking pipe off the back of the intake manifold, I've been having this "traktor-like' exhaust leak coming from somewhere around the back of my motor. I did some self-testing, I had my gf sit in the car and give it small squirts while I was under the car, and none of the fitted exhaust components/gaskets seem to be leaking. I was wondering if anyone did a DIY on replacing, maybe fixing that smaller pipe which seems to be leading up from the manifolds to the intake/upper head assembly.
Thx for the help in advance
06-04-12, 01:08 PM
#43
Pole Position
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Often you have to "feel" a small exhaust leak to find it. I find the back of my hand works especially well. Wave my hand over and around the exhaust components and when I feel the hair on my hand move Ive found it.
That's the egr pipe I I'm understanding you correctly.
That's the egr pipe I I'm understanding you correctly.
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