GB HKS 06-07 IS250/350 Catback Exhaust

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01-10-07, 11:08 AM

#16

mlee21

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how long is this going to last.

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01-10-07, 11:30 AM

#17

07Txlex

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Yea I need an estimate on the length of this group buy also

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01-10-07, 12:37 PM

#18

IStreefidy

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what's the difference between this exhaust and the other HKS exhaust from Sewell (couple posts down)?

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01-10-07, 02:37 PM

#19

solo_stage

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i think the other HKS exhaust costs $1200 because Lexus has to deal with a LOT of paperwork to get it sold basically as a "stock" option through lexus meaning that no warranty would be voided with its installation... im not sure tho?

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01-10-07, 03:08 PM

#20

IStreefidy

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o well. I like this one better anyways, its for half the price! plus they are both axel backs so its not like one is gonna be way to much more power anyways.

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01-10-07, 03:28 PM

#21

solo_stage

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i would like to know how long this offer is good for as well cause i dont get paid til the 21st =( LOL.

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01-10-07, 03:45 PM

#22

RocketGuy3

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Quote:

Originally Posted by IStreefidy

o well. I like this one better anyways, its for half the price! plus they are both axel backs so its not like one is gonna be way to much more power anyways.

I think this one should be more powerful anyways, because I'm pretty sure it uses circular/cylindrical mufflers. I believe those are supposed to be more free flowing than the oval mufflers on the Lexus HKS exhaust... but they're also typically louder. Just hopefully not TOO loud...

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01-10-07, 04:09 PM

#23

accelerate

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Hey I got a question is this exhaust all stainless or only the muffler and tips.

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01-10-07, 07:06 PM

#24

mctuners

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I'd like to know how long this GB is for.
Also, would it fit on IS250 AWD? I think it does, but just to make sure..
Lastly, how loud is this compared to stock muffler?

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01-11-07, 02:11 PM

#25

Carson-Lex

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Quote:

Originally Posted by RocketGuy3

I second that question.
I would also like to know if there are any specs for this exhaust? Peak dB level compared to stock? HP/torque gain on the dyno? Weight?
As it stands, I'm VERY interested.

Quote:

Originally Posted by caymandive

What were the dyno results? Anything to post?

Dyno results have beem posted on front page, information received from HKS rep.

Quote:

Originally Posted by vApor21

how long is this going to last.

Quote:

Originally Posted by 07Txlex

Yea I need an estimate on the length of this group buy also

Quote:

Originally Posted by mctuners

I'd like to know how long this GB is for.
Also, would it fit on IS250 AWD? I think it does, but just to make sure..
Lastly, how loud is this compared to stock muffler?

GB will stay in a effect for a while , you guys have plenty of time. The only thing is I have a few more left IN STOCK, after these are sold the next order will be about a 1-2 week wait. Will check on compatability with AWD model.

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01-11-07, 02:58 PM

#26

RocketGuy3

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That's strange. The Lexus HKS exhaust is supposed to provide a 7-10 rwhp gain, according to lexus-parts dyno results... I was sure this one would be at least about the same. I wonder if HKS is just being conservative, or Lexus went a little overboard...

EDIT: Also, is there any info on the weight of this system compared to stock?

Last edited by RocketGuy3; 01-11-07 at 03:05 PM.

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01-11-07, 03:34 PM

#27

Carson-Lex

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Quote:

Originally Posted by RocketGuy3

I remember the same thing, just posted the info we received direct from HKS. I will follow up, im still waiting for a response on dyno chart pics, AWD compatability, and system weight. As soon as I have more info to post up, it will be right on the front page.

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01-11-07, 05:29 PM

#28

accelerate

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Still wanting to know if the entire system is stainless. Because it only sounds like the mufflers and tips are stainless. Thanks

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01-11-07, 07:29 PM

#29

Redpaste

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"Db sound levels did not exceed 90Db, and produced a nice low rumble, on the mellow side."

Do you know if this was on a IS 250 or IS 350? Under 90dB would be great!