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Old 04-12-2011, 05:42 PM   #1
6foot6
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Cool Tomei Expreme Equal Lenth Exhaust Manifold

So, I finally decided to upgrade my exhaust manifold and up-pipe. I thought for a while about whether I wanted to keep the unequal length design (so as not to lose the famous rumble) or possibly sacrifice some of the 'famous bass' for the possibility of more power from the more efficient equal length design.

The product itself is of great quality. The welds look great and the finish looks flawless. The manifold joins the up-pipe with a 3-bolt flange, unlike the 2-bolt OEM version. All gaskets and hardware were included. There is even a large roll of heat wrap and metal zip-ties included and are definitely worth the trouble of using. Just be sure to use gloves and do it somewhere you don't mind getting a little dirty. More itchy particles than cleanliness. There was actually enough wrap left over to probably do my down-pipe as well but I didn't think of that ahead of time.

Fitments were very good. I had to wiggle the up-pipe back and forth a little to get the studs into the turbo holes but not bad. The manifold is actually slightly adjustable at a joint section, to make installation easier, but it wasn't necessary. It went on very easily. The instructions even come in Japanese and English.

The sound does change slightly. Beforehand I was using a Turbo XS turbo-back exhaust with high-flow cat. When I installed the manifold I also swapped out the cat with my Turbo XS test-pipe. That also affected the outcome, I am sure. This is definitely not for the faint of heart. I though my car was loud before...not like this. My car was tested with a decibel meter without the cat before and it read at 97 decibels. I can tell already that it should be WELL over 100 decibels. The boxer rumble is still present but at wide-open-throttle higher in the rpms the sound does go up in pitch. But I don't think it is bad at all. It actually sounds more aggressive and 'racy'.

I could instantly tell the bump in power under acceleration. It's not like you will realize a huge increase but I can definitely tell the difference. The car flows much more free and the turbo spools quickly. I can't wait to get a custom tune after I get new injectors, pump and front mount intercooler. I am currently running the aforementioned exhaust components, a COBB SF intake, Mode Racing air-box, NGK one step colder spark plugs, and an off the shelf COBB stage 2 93 octane map.

I decided to test out the launch control at 4500 rpms and have a little fun before I change to summer tires. This was in a closed off area but it wasn't big enough to have more fun, lol. I am happy with it and I hope this helps someone else considering an equal length manifold make up their mind.

Sorry for the poor quality:
http://youtu.be/HpQrINrvoG0
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Old 04-12-2011, 05:49 PM   #2
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And here are some pictures to go with it...





Last edited by 6foot6; 04-12-2011 at 05:56 PM.
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Old 07-20-2011, 07:05 PM   #3
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Well, not sure why no one replied, but I am thinking about their UE version and it is nice to see an install and feedback. Looks like a very well made part. I am thinking about heat coating it so I do not have to deal with the smell of wet heat wrap since it is wet here in Oregon half the year.

cheers.
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Old 07-20-2011, 07:39 PM   #4
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I just got my twin scroll unequal length installed about two weeks ago and just recently tuned (i had a whole bunch of other stuff installed as well). Really happy with the results. I am going to do a before and after sound clip, just gotta record the after now and splice it all together.
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Old 07-21-2011, 06:56 PM   #5
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definitely an awesome header, enjoy!
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Old 07-22-2011, 11:14 AM   #6
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Thanks for the post! I just bought the same headers last week and am looking forward to do the vf39 upgrade, sti tmic, invidia turboback, tgv deletes and of course.... The Tomei equal length headers w/ Uppipe. Your car sounds great still. I was kind of skeptical about the sound change, but after hearing your car I'm just excited. I'll have all work done with a tune in about a month so I will be sure to leave another post with a video. Thanks again.
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Old 07-22-2011, 12:13 PM   #7
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My only concern is the 304 vs. 321 it is made out of. I would love to know what the actual warranty is that the header comes with given the 304 steel.
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Old 07-22-2011, 02:34 PM   #8
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Limited lifetime
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Old 08-11-2011, 01:00 AM   #9
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There are actually very few headers made out of 321SS. Unfortunately for the customer, not all 304SS is the same... A good quality 304SS header should last you a long long time.
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Old 08-11-2011, 10:49 AM   #10
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I hope to not dredge this post from the dead some day saying that my UEL Tomei failed! They sure are a thing of beauty!
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Old 08-23-2011, 12:25 PM   #11
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does anyone know if there is a EGT bung built in these headers?
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Old 08-23-2011, 12:33 PM   #12
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no egt bung sir

only 1 bung in up pipe
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Old 08-27-2011, 07:12 PM   #13
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AShame you can't run an EWG with this. Josh, anyone making a 3 bolt EWG uppipe?
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Old 09-01-2011, 06:56 PM   #14
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Quote:
Originally Posted by aeonflux99
AShame you can't run an EWG with this. Josh, anyone making a 3 bolt EWG uppipe?
Gtspec has one

Check rallysportdirect.com
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Old 09-08-2011, 10:33 AM   #15
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Does the stock splash guard fit with this header?
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Old 11-30-2011, 03:04 PM   #16
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Installed the Tomei equal length headers a few months ago on my 07 Wrx. They look and sound great. It took a while for the raspier sound to grow on me. Im not gonna lie though, I do miss the really deep rumble.

1 thing that I never saw on the forums though.

The 06-07 Wrx oil cooler, DOES NOT fit with these headers. You WILL need to swap it out with an Sti oil cooler.

This was not fun to find out while my car was on the lift at the shop. New Sti oil cooler was about $250.
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Old 11-30-2011, 03:12 PM   #17
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awesome John, the price to pay for more power
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Old 12-19-2011, 01:59 PM   #18
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would it be okay to wrap the slip joints as well?
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Old 12-19-2011, 10:40 PM   #19
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Quote:
Originally Posted by pooster.online View Post
would it be okay to wrap the slip joints as well?
Yep! I wrapped mine separately because I wanted to make sure there were no leaks from there first.
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Old 01-27-2012, 02:19 PM   #20
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Quote:
Originally Posted by Kojak77 View Post
Does the stock splash guard fit with this header?
kind of a late reply, but i had to do some minor trimming on mine. theres on place on the passenger side of the header that touch the plastic undercarriage a bit.
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Old 01-27-2012, 03:26 PM   #21
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Quote:
Originally Posted by pooster.online View Post
kind of a late reply, but i had to do some minor trimming on mine. theres on place on the passenger side of the header that touch the plastic undercarriage a bit.
Better late than never. Thanks very much!

This header is on my shopping list for sure.
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Old 01-29-2012, 07:27 PM   #22
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nice writeup. i have the tomei elh and uppipe on order right now. gonna install it in the spring. the setup looks like it fits real good and the quality is great. how did it change the sound? im trying to tone mine down some.
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Old 02-12-2012, 12:32 PM   #23
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Quote:
Originally Posted by Gr8wall View Post
I just got my twin scroll unequal length installed about two weeks ago and just recently tuned (i had a whole bunch of other stuff installed as well). Really happy with the results. I am going to do a before and after sound clip, just gotta record the after now and splice it all together.
Twin Scrolls are all equal length.

I had a set of Tomei EL headers and they were great and everyone loved the sound coming from my blitz spec r . I now have a set of Tomei twin scroll headers on the way for my next project.
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Old 07-04-2012, 05:31 PM   #24
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Installed this on Monday. It fits great, sounds great and the car seems to just like it better than the stock manifold.

Looking forward to getting tuned!
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Old 07-04-2012, 09:38 PM   #25
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i think you are correct on the fitment. nice power gains too
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