Street Legal exhaust
07-05-07, 08:02 AM
#19
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Ahhhh, so that's why the Borla sounds so much meaner due to the elimination of the resonator. Honestly, I really feel the resonator doesn't do ANYTHING besides deadening the exhaust sound further. I'll bet you can even take that out on stock vehicles and it will still pass emissions.
I'm going to go that route then. Now I will seriously consider Borla. Heh, I just got a quote from Lexus how much it would cost to install the darn thing and they said $105 for labor. They said that it will also void my warranty for the Borla, which sucks. But, they did say they can do the OEM Performance upgrade for $1514 total price plus an additional $150 reduction because of AAA discount. Big whoop, it's still pretty high priced.
I'm going to go that route then. Now I will seriously consider Borla. Heh, I just got a quote from Lexus how much it would cost to install the darn thing and they said $105 for labor. They said that it will also void my warranty for the Borla, which sucks. But, they did say they can do the OEM Performance upgrade for $1514 total price plus an additional $150 reduction because of AAA discount. Big whoop, it's still pretty high priced.
07-05-07, 08:25 AM
#20
The resonator and mufflers do nothing for emissions, but they do a LOT for sound. Regarding the Borla exhausts, one is street legal, and the other isn't. Unfortunately, the street legal version doesn't have resonators, so it is significantly louder. I don't understand why Borla did that...
The only part of the warranty that can be voided by an exhaust is the warranty for the exhaust. If the dealer is trying to imply that the Borla exhaust will void the warranty on the whole car, they are absolutely lying.
The only part of the warranty that can be voided by an exhaust is the warranty for the exhaust. If the dealer is trying to imply that the Borla exhaust will void the warranty on the whole car, they are absolutely lying.
07-05-07, 08:32 AM
#21
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It's because I had a true back before for my Nissan Altima equipped with a Flowmaster 40 Series muffler. Lots of welding was involved. My Toyota Corolla previously was an axleback from TRD even though a lot of idiots called it a cat-back exhaust system. I mean, isn't "cat-back" refer to: upgraded exhaust which includes pipes and muffler "directly after" the "catalytic convertor"? I can udnerstand bolt on exhaust can't do that unless you get someone to actually "cut" the pipes right after the convertor, then weld in place (adding additional piping as necessary to complete the system changeover).
Because of my interest on hooking up an exhaust for my IS, I'm looking for a true cat back system. The Lexus OEM performance exhaust is also a direct bolt on axle back system and not a true cat back.
The picture shown here......
.....includes only the "y" pipe and dual performance muffler (tip too). But the resonator piece and on back is still stock which leads me to believe that it's another OEM axle-back exhaust system.
I can't find any decent pictures of the HKS Hi-Power exhaust to compare to so I can't say if it's the same as the OEM. I do know that they do use a different HKS muffler from what I can see. That's it.
Because of my interest on hooking up an exhaust for my IS, I'm looking for a true cat back system. The Lexus OEM performance exhaust is also a direct bolt on axle back system and not a true cat back.
The picture shown here......
.....includes only the "y" pipe and dual performance muffler (tip too). But the resonator piece and on back is still stock which leads me to believe that it's another OEM axle-back exhaust system.
I can't find any decent pictures of the HKS Hi-Power exhaust to compare to so I can't say if it's the same as the OEM. I do know that they do use a different HKS muffler from what I can see. That's it.
https://www.clublexus.com//gallery/d...s_hi-power.jpg
Last edited by nrsk4u; 07-05-07 at 08:35 AM.
07-05-07, 08:38 AM
#22
Lead Lap
Thread Starter
The resonator and mufflers do nothing for emissions, but they do a LOT for sound. Regarding the Borla exhausts, one is street legal, and the other isn't. Unfortunately, the street legal version doesn't have resonators, so it is significantly louder. I don't understand why Borla did that...
The only part of the warranty that can be voided by an exhaust is the warranty for the exhaust. If the dealer is trying to imply that the Borla exhaust will void the warranty on the whole car, they are absolutely lying.
The only part of the warranty that can be voided by an exhaust is the warranty for the exhaust. If the dealer is trying to imply that the Borla exhaust will void the warranty on the whole car, they are absolutely lying.
That link didn't work for me. Says that "Address not valid". Never mind, I see it now. The exhaust look good, it's just that the resonator is left intact. I want to get rid of it. I may just get each part individually. Muffler. Then go somewhere so people can work on the other parts. I just like Lexus to do it because if flows with warranty and when things come up, they can't say, "well you had this installed elsewhere from a non-certified Lexus dealership" and result in incorrect installation, such, and such...
07-05-07, 08:42 AM
#24
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Is there a sound difference with performance exhaust on the IS250 vs IS350? I'm thinking they should sound a little different right? Due to the engine difference.
07-05-07, 08:45 AM
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thats a good question, I would guess they would sound about the same, I have not compared them side to side. same engine maker, 350's just have more HP.
07-05-07, 09:37 AM
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not to hot on the whole borla set up....its more for american cars. for that money id get OEM HKS duel sport. at least that way you know its made for your car, ya know
07-05-07, 03:18 PM
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I was under the wrong impression then. seemed to me the style of borla dosent change for the imports. I actually was contemplating the borla but not a single person recomended it (pre-CL) to me so I went with HKS.
07-05-07, 04:00 PM
#30
Sounds like the people you were talking to weren't very knowledgeable. The "off road" Borla exhaust seems to be the best design of anything else available since no other design implements an X-pipe, and the off road version is relatively quiet. I really wish I had waited for it instead of going the custom mid-pipe / HKS Hi Power route.