Shorty headers for is300 - Lexus IS Forum
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post #1 of 11 (permalink) Old 10-30-2018, 11:26 PM Thread Starter
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Shorty headers for is300

Hey guys, new owner to an is300! I was wondering what my options for catless short tube headers were? I cant seem to find any available online. I did see some posts here about the obx shorties but also read that they dont make them anymore (also couldnt find any for sale anywhere). Are there any other options that im just not seeing?

Thanks in advance!
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post #2 of 11 (permalink) Old 10-31-2018, 10:06 AM
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Originally Posted by 2JZ-duz-it View Post
Hey guys, new owner to an is300! I was wondering what my options for cat-less short tube headers were? I cant seem to find any available online. I did see some posts here about the obx shorties but also read that they don't make them anymore (also couldn't find any for sale anywhere). Are there any other options that im just not seeing?

Thanks in advance!
No "shorties" Just full length. Why are you wanting a short header?
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post #3 of 11 (permalink) Old 10-31-2018, 07:39 PM Thread Starter
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Thanks for the reply!

My goal is to build a fun and reactive daily and I read that long tube headers potentially shift power from the lower rpm ranges to the higher rpm ranges. I drive mostly in the streets and wouldnt be able to utilize that power as much as i would with something that gives gains in the lower rpm ranges. Im also very new to cars so please correct me if im interpreting anything wrong(:
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post #4 of 11 (permalink) Old 11-01-2018, 06:36 AM
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Originally Posted by 2JZ-duz-it View Post
Thanks for the reply!

My goal is to build a fun and reactive daily and I read that long tube headers potentially shift power from the lower rpm ranges to the higher rpm ranges. I drive mostly in the streets and wouldn't be able to utilize that power as much as i would with something that gives gains in the lower rpm ranges. I'm also very new to cars so please correct me if i'm interpreting anything wrong(:
Yes and no. The size of primaries and design influences also. The cheap eBay stainless header will work fine. You will lose a tiny bit of torque. For not having cats. But it is minimal. You will pickup mid and upper range.

I guess if you want restricted flow for N/A. You could by a cast log style manifold for a turbo. But use it without a turbo. But it is really not worth the effort or money.
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post #5 of 11 (permalink) Old 11-01-2018, 02:32 PM
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My butt dyno definitely noticed an improvement when I put the DNA headers on my car with everything else stock. Surely at least 5hp increase.

2004 IS300 8N6 automatic - F&F Coilovers, Eibach sway bars, DIY Intake hardpipe, FR-S LSD swap, buddy club driver seat, Aftermarket HID's and LED Tail lights, Trunk strut mod
.....Soon to be NA-T with CX Racing hard parts, Garrett 60-1 turbo, Tial 50mm BOV, Tial MVR wastegate and FIC 6 piggyback
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post #6 of 11 (permalink) Old 11-28-2018, 06:19 PM
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If you're looking for headers I should have mines for sale fairly cheap towards the end of January.
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post #7 of 11 (permalink) Old 11-29-2018, 04:08 PM Thread Starter
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If you're looking for headers I should have mines for sale fairly cheap towards the end of January.
Ayyyeee. I pm'ed you!
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post #8 of 11 (permalink) Old 02-26-2019, 05:38 PM
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Bunch of bad info but Dezod makes pretty nice header

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post #9 of 11 (permalink) Old 02-27-2019, 08:56 AM
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What about the one from the Suprastore...anyone tried that particular header? Looks somewhat similar to the Fleabay stuff, but slightly different design.
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post #10 of 11 (permalink) Old 02-27-2019, 10:33 AM
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Bunch of bad info but Dezod makes pretty nice header
you will never get it. so it doesnt really matter how nice it is.
TobiasSing likes this.

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post #11 of 11 (permalink) Old 02-27-2019, 02:30 PM
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Bunch of bad info but Dezod makes pretty nice header
if you can get one, lol
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