HEADER & INTAKE R&D. [Archive] - Toyota Yaris Forums

WRLEO

11-10-2006, 05:24 PM

Looking for a Test car for our 4-2-1 Street Header & Intake system.

Here are some pictures of our newest Header for the Celica.

If anyone in the Bay Area is intrested please PM or Email me.

http://www.weapon-r.com/images/forum_pics/toyota/CIMG3776.JPG

http://www.weapon-r.com/images/forum_pics/toyota/CIMG3777.JPG

http://www.weapon-r.com/images/forum_pics/toyota/CIMG3778.JPG

http://www.weapon-r.com/images/forum_pics/toyota/CIMG3779.JPG

http://www.weapon-r.com/images/forum_pics/toyota/CIMG3780.JPG

http://www.weapon-r.com/images/forum_pics/toyota/CIMG3781.JPG

http://www.weapon-r.com/images/forum_pics/toyota/CIMG3782.JPG

YamilR

11-10-2006, 05:27 PM

That looks awesome. Could you give an estimate on the price?

WRLEO

11-10-2006, 05:45 PM

It's going to be as cheap as the OBX or MEGAN ( SAME KIND OF PRODUCTS )
i was talking to my production manager since we make the headers in USA, and he said it should be in the range of $350. But a group buy will help the price get alittle lower. Now only if i can get a car over here to test fit it and confirm 100% perfect fit.

Violin

11-10-2006, 05:46 PM

Again with the West Coast.

Sheesh!

WRLEO

11-10-2006, 05:48 PM

Here are the dyno results from our Xb / Xa Header which is the same platform we just changed some brackets around. So performance should be exactly the same, if the ecu is the same.

http://www.monstermotorworks.com/images/xbheaderdyno.jpg

http://www.monstermotorworks.com/store/images/xbheadersmall.jpg

http://www.monstermotorworks.com/store/images/xbheadersmall2.jpg

DYNO RUN VIDEO:
http://www.monstermotorworks.com/images/forum_pics/xb/xbheader/xb_headertest.AVI

YamilR

11-10-2006, 06:00 PM

The Megan is ofered in a GB for 20 people for $190.

WRLEO

11-10-2006, 07:20 PM

Compare Apples with Apples..
Megan is 4-1. WR is 4-2-1 which is proven to make more power.

Chris07LB

11-10-2006, 07:26 PM

Nice.

C2AUTOSPL

11-10-2006, 10:47 PM

HEy Leo, its me Jay from FitFreak. Nice to see you on here :)

Katana

11-11-2006, 09:59 AM

Are you planning on releasing a 4-2-1 header for the 1.3lt engine(2SZ-FE)?

ItsMyDaily

11-11-2006, 11:45 AM

Wow is that dyno compared to stock? Do I see a 11torque increase over stock, and a 11whp increase over stock????! Those are very nice increase in numbers. And it's classic 4-2-1 design showing very good gains botom end, and a nice increase throughout the entire powerband. The question is was the dyno done with just the header as the only mod?

WRLEO

11-11-2006, 12:08 PM

yes that was the only mod.
we are planning to do a 1.3L header also.

Were looking for a final test fit car to check the fitment 100%.
anyone in the bay area?

dngz

11-11-2006, 01:07 PM

=( id rather have these headers than the MR ones =(.....

ItsMyDaily

11-11-2006, 01:55 PM

=( id rather have these headers than the MR ones =(.....

so just leave the group buy and wait for these.

BulletProofAuto

11-11-2006, 06:57 PM

i got to see some of their products in person at sema during my stroll around. i was impressed with the quality to price ratio.

Chris07LB

11-11-2006, 07:03 PM

i got to see some of their products in person at sema during my stroll around. i was impressed with the quality to price ratio.

Whats up John... Hey, you going to be back in NV for CES, Ill buy ya a few cold one's.

Violin

11-11-2006, 10:50 PM

I'm glad I waited.

Be sure to post more once it's tested and ready for market.

eco

11-12-2006, 02:09 AM

tca4

11-12-2006, 02:43 AM

Helping a friend to ask, does the header fits the old 05 Echo HB? thanks.

jcove

11-12-2006, 09:26 AM

Want....need....can't spend money....:cry:

ItsMyDaily

11-12-2006, 11:45 AM

I would have to say that the Megan Racing headers will be better.Because a header that is 4-1 gives you the advantage in the high rpm band,say 3000-6000,rather then 500-4500.Headers that are 4-1 have lease restriction,a must at high rpms.

eco check out the dyno plot. This header is making great gains down low, but even better ones up top. For an engine this small a 4-1 design is not necessary, and your probably going to see small gains if any down low, but I'm sure you'll see some up top. Fact is that our cars would benefit more from midrange power then they would from top end power. This header looks like its the best of both worlds.

Katana

11-12-2006, 11:55 AM

yes that was the only mod.
we are planning to do a 1.3L header also.

Let me know cause I am extremely interested!!!

eco

11-12-2006, 12:34 PM

Yes,the chart looks good till about 4500rpm,then performance degrades.A 4-1 will be better from that point on,I want more oomph when Im already traveling at 75 mph,about 3200rpm,and want to floor it,Ill reach top end faster with a 4-1.Now I will say a 4-2-1 will be slightly,and I mean slightly better for accelaration,only because it will give alittle mor back pressure,somthing you dont want when the engine is wide open.Just wait till we test the Megan headers,youll see.

WRLEO

11-12-2006, 03:52 PM

I have seen these 4-1 and 4-2-1 header convo's on many forums..
it's to each their own. but back to basics..
For example.. ( Im just here to give info.)
95% of Honda Race Headers are 4-2-1.
These guys look for the biggest gap in BASE and after dyno runs.
The most important things is TORQUE, Not Horsepower.
Torque PULLS you and Gives you that OMMPH..

4-2-1 does not give more back pressure. It's all about the pairing of the firing pattern of the exhaust and how the exhaust scavenges out of the cylinder head and how it gets pulled out of the header into the exhaust.
Think of how the engine works.

Cylinder 4&1 are up while 2&3 are down. Thats the engine cycle.
Our header is set up to scavenge the exhaust gases out of the engine as fast as it can hence the 4-2. And finally when the two different pulses of exhaust gases are merged they push each other out. If you can understand this, you will start to understand why 4-2-1 headers are better and more effecient than a 4-1 header.

As you can see 4-1 headers dont take much design and or any R&D at all. Just run all the tubes into one collector. Lets let the dyno sheets speak for themselves.

Here are some examples for you.

http://www.scionlife.com/forums/viewtopic.php?t=83865&highlight=mmw++header

http://www.scionlife.com/forums/viewtopic.php?t=113554&highlight=mmw++header+dyno

http://www.scionlife.com/forums/viewtopic.php?t=148020&highlight=mmw++header

http://www.scionlife.com/forums/viewtopic.php?t=105746&highlight=mmw++header

ChinoCharles

11-12-2006, 08:41 PM

If you're going to compare two products, it would be good to at least mention both, rather than mention one 200 times and mention the other once. :rolleyes:

As you can see 4-1 headers dont take much design and or any R&D at all.
You must think we're morons...

I smell bias. Go read up kiddies, the 4-2-1 vs. 4-1 debate is up in the air and differs depending on the car and the rest of the components with it.

WRLEO

11-12-2006, 09:27 PM

If you're going to compare two products, it would be good to at least mention both, rather than mention one 200 times and mention the other once. :rolleyes:

You must think we're morons...

I smell bias. Go read up kiddies, the 4-2-1 vs. 4-1 debate is up in the air and differs depending on the car and the rest of the components with it.

We do not slam on anyone. im just here to provide info.
Im just pointing out other peoples thoughts on 4-2-1 headers.

Im simply pointing out 4-1 & 4-2-1 designs.

Here are some other companies that make the same kind of headers.

http://www.hytechexhaust.com/
http://www.comptechusa.com/
http://www.rcrewracing.com/forum/viewtopic.php?t=103
Jst a few to mention.

bigsky2

11-12-2006, 09:35 PM

ChinoCharles

11-12-2006, 09:53 PM

He isn't a supporting vendor yet, I can question him all I want. :bellyroll:

He'd say anything to sell some headers. Let me guess, people with 4-2-1 headers are generally larger down there, right?

Violin

11-13-2006, 07:40 AM

I had already decided that I wanted a 4-2-1 over a 4-1 for midrange gains and driveability. I'm not building a drag racer - this is my daily commuter. I also think a manufacturer should do testing as part of the design process rather than after the sale - just me I guess.

ItsMyDaily

11-13-2006, 10:44 AM

I agree with Violin. I wanted a 4-2-1 design for the yaris aswell. I believe the Yaris will benefit better with a 4-2-1 design then a 4-1. Top end gains are going to be similar with either one, but it's bottom end hat is going to be benefited with the 4-2-1 design. My car is my daily commuter and I want to improve on city driving as much as possible. However even for those thinking of tracking their yaris...your going to want to improve on your midrange with this car a lot more then just top end numbers.

Fastnx

11-13-2006, 01:20 PM

As you can see 4-1 headers dont take much design and or any R&D at all. Just run all the tubes into one collector. Lets let the dyno sheets speak for themselves.

What? That has got to be one of the most ignorant statments I have ever heard.

http://www.honda-tech.com/zerothread/1780476

this header was obviously just thrown together :rolleyes:

Looks like it didn't help much either

18hp gain

WRLEO

11-13-2006, 01:36 PM

I was talking about Honda's.. With some kind of VTEC.
That was a SR20 NA..

Like i said ... 4-1 heades are easy to make, alot easier than a 4-2-1.
That was my point. You dont have to agree with me..

Get me a car to run it on and i will prove it to you.. thats all. we dont need to go back and forth about these little things. Just let the dynos speak for themselves.

eco

11-13-2006, 02:22 PM

Like I said,a 4-1 design will be better after 4500rpm,and looks like it might be just as good in the low rpm band from that example,but remeber folks,your going to pay $350.00 for the headers from WR,plus shipping and tax,when you can pay $190.00 for the Megan headers,and low low end diffrence is not even noticable between the 2,and the Megan headers will be better at the high end,this should not be a hard choice,save some money and get the better headers,Megan headers.

Katana

11-13-2006, 03:13 PM

We do not slam on anyone. im just here to provide info.
Im just pointing out other peoples thoughts on 4-2-1 headers.

Im simply pointing out 4-1 & 4-2-1 designs.

Here are some other companies that make the same kind of headers.

http://www.hytechexhaust.com/
http://www.comptechusa.com/
http://www.rcrewracing.com/forum/viewtopic.php?t=103
Jst a few to mention.

From what I generally know, a 4-2-1 design is better from a 4-1 design.My Yaris has 4-1 header and some technicians have told me that this is bad, because the engine's gases are immediately compressed into one tube, than gradually compressing them from 4 tubes, to 2 tubes, to 1 tube(4-2-1).

However, I may be wrong.:help:

the_saint

11-13-2006, 03:38 PM

Might as well put in my $0.02. :laugh:
From what I remember & I've been told (back in my V8 days) 4-1 or longtube headers are more for WOT/drag racing because the exhaust doesn't have much in the way of restriction...but as a result you lose low RPM power/torque.
With the 4-2-1 style headers you get better drivability because (when properly engineered) the layout of the tube and the order in which they come together helps scavange or suck exhaust out which is supposed to help low end power.

So, in short...
4-1 better for drag racing
4-2-1 better for daily driver

If you're bored you can always read this...Header-Exhaust Design Effects on Engine Power (http://www.team-integra.net/sections/articles/showArticle.asp?ArticleID=2).

YamilR

11-13-2006, 04:32 PM

Alright so who's going to volunteer to head a Group Buy on this header? And put me down for one, please:thumbup:

Violin

11-13-2006, 04:38 PM

Will someone in the Bay area please step up?

YamilR

11-13-2006, 04:46 PM

I will be flying out of the country for 18 days during christmas time. I can volunteer my car but It will need to be picked up and dropped off here in Fl and off course a free header will be great. Holla

grimez

11-13-2006, 10:40 PM

From what I generally know, a 4-2-1 design is better from a 4-1 design.My Yaris has 4-1 header and some technicians have told me that this is bad, because the engine's gases are immediately compressed into one tube, than gradually compressing them from 4 tubes, to 2 tubes, to 1 tube(4-2-1).

This might be true. I'm a chemical engineer, and the effects of combining gases can many times generate unwanted slowing turbulence. In the end, if the distance between the two separate joints is long enough, the gases will become less turbulent before they mix again. This would help in keeping the gas passing through faster.

Just my 2 cents.

LVAquaman

11-14-2006, 01:55 AM

WRLEO,
I am in LV. I can be there on Sunday. Let me know if you can not find any other takers.

eTiMaGo

11-14-2006, 02:56 AM

actually I recently read a pretty technical article (I think it was in "Turbo" magazine), about the difference between 4-1 and 4-2-1 headers, essentially a 4-1 header will give you more of a large improvement at high revs, while a 4-2-1 is a more linear improvement over the whole rev range. I'll have to read it again to get the finer points (or scan it and post here?)

Chris07LB

11-14-2006, 09:14 AM

4-1 is fine with me, as 99% of my commute is steady high speed highway miles for just over an hour each way.

Katana

11-14-2006, 02:12 PM

Might as well put in my $0.02.
From what I remember & I've been told (back in my V8 days) 4-1 or longtube headers are more for WOT/drag racing because the exhaust doesn't have much in the way of restriction...but as a result you lose low RPM power/torque.
With the 4-2-1 style headers you get better drivability because (when properly engineered) the layout of the tube and the order in which they come together helps scavange or suck exhaust out which is supposed to help low end power.

So, in short...
4-1 better for drag racing
4-2-1 better for daily driver

This might be true. I'm a chemical engineer, and the effects of combining gases can many times generate unwanted slowing turbulence. In the end, if the distance between the two separate joints is long enough, the gases will become less turbulent before they mix again. This would help in keeping the gas passing through faster.

Just my 2 cents.

Well, generally this is the basic idea.

But then, why Toyota chose a 4-1 design for mine???I mean, I am supposed to be using the car on city streets, so I need it to be drivable.:eek:

WRLEO

11-14-2006, 03:43 PM

Im willing to give a deal to 5 guys to try out and give feedback at a discount.
PM for details. We are still on for monday for the dyno test and full on pictures on monday..

Galavoxx

11-14-2006, 05:06 PM

Im willing to give a deal to 5 guys to try out and give feedback at a discount.
PM for details. We are still on for monday for the dyno test and full on pictures on monday..

I just PM'd. Let's see what happens. I would love to get a header, although I've yet to get a CAI or an exhaust...

ChinoCharles

11-14-2006, 05:10 PM

I just PM'd. Let's see what happens. I would love to get a header, although I've yet to get a CAI or an exhaust...

Gotta start somewhere, right? :laugh:

Galavoxx

11-14-2006, 05:14 PM

True. And if those Dyno numbers are accurate, 11 hp is a very nice start.

Chris07LB

11-14-2006, 05:56 PM

Im willing to give a deal to 5 guys to try out and give feedback at a discount.
PM for details. We are still on for monday for the dyno test and full on pictures on monday..

Ive posted lots of DIY How_To's around here... Id be willing to do a full review on one of your headers, along with step by step install instructions. Feel free to read up on a few of my reviews posted in the How_To Section of this site.

PM me if interested. :biggrin:

WRLEO

11-14-2006, 05:59 PM

Ok found a car local in San Francisco..
Will be dyno testing tommorrow.. :)

WRLEO

11-14-2006, 06:06 PM

I just PM'd. Let's see what happens. I would love to get a header, although I've yet to get a CAI or an exhaust...

We'll see if we cna make a decent intake system also.. :)

Galavoxx

11-14-2006, 06:07 PM

Ok found a car local in San Francisco..
Will be dyno testing tommorrow.. :)

Yeah!!! That's me. I can't wait for that extra hp. Thanks Leo. See you at 9am.

YamilR

11-14-2006, 06:24 PM

Ive posted lots of DIY How_To's around here... Id be willing to do a full review on one of your headers, along with step by step install instructions. Feel free to read up on a few of my reviews posted in the How_To Section of this site.

PM me if interested. :biggrin:

WRLEO, if I was you I'll take this offer very seriously, He's the top "HOW_To er" in this forum :bow:

Katana

11-15-2006, 02:31 PM

Im willing to give a deal to 5 guys to try out and give feedback at a discount.
PM for details. We are still on for monday for the dyno test and full on pictures on monday..

I am here when you manufacture a header for the 1.3lt engine.Just don't forget me.

ItsMyDaily

11-15-2006, 04:03 PM

Ok found a car local in San Francisco..
Will be dyno testing tommorrow.. :)

I hope you guys also do a stock dyno before dynoe with the header. that way we see gains by comparing both graphs.

Galavoxx

11-15-2006, 04:27 PM

I hope you guys also do a stock dyno before dynoe with the header. that way we see gains by comparing both graphs.

They plan to. I dropped the car off this morning. Hope to pick it up soon.

:thumbup:

Violin

11-15-2006, 05:02 PM

:drool:

WRLEO

11-15-2006, 05:42 PM

Ran into some fitment problems with the Header.
Back to the drawing board it didnt bolt completely up to the exhaust.
We will bring this post back very soon.

To be continued.

WRLEO

11-15-2006, 06:20 PM

Just as a Teaser.
This ii what the Header & Intake together made as far as Power.
We could only bolt one of the downpipe bolts to the header, so it was kind of like semi open exhaust, but it will give you guys an idea of how much it will produce with a exhaust system put on, since the car had stock exhaust.

http://www.weapon-r.com/images/forum_pics/toyota/yaris/Stock%20vs.%20SW%20Intake%20%26%20Header.jpg

Cheers..

Black Yaris

11-15-2006, 06:24 PM

Hmmm 16.5HP and 16.8 FT/lb of torque.... that is a pretty good gain for bolt ons... can't wait for my headers and exaust to come in

Galavoxx

11-15-2006, 06:27 PM

Torque gains are all over huge. I can't wait!!

Galavoxx

11-15-2006, 06:29 PM

Torque gains are all over huge. I can't wait!!

was that english...:biggrin:

ItsMyDaily

11-16-2006, 12:55 AM

wow that is very impressive considering the fitment issue. can't wait for final product and last results.

spkrman

11-16-2006, 01:26 AM

wow that is very impressive considering the fitment issue. can't wait for final product and last results.

x2, interested :cool:

ItsMyDaily

11-16-2006, 10:50 AM

I'm curious now because I just realized you mentioned the use of an intake also, is that correct? What type of intake was used, and any pics of it?

WRLEO

11-16-2006, 12:30 PM

Yes our intake was put on the car.. if you look at the perf mod's section i posted a seperate thread about the intake.

eco

11-16-2006, 02:03 PM

Will the fitment problem be taken care of before release,when will it be released.Im seriously thinking of going with WR.

eco

11-16-2006, 02:04 PM

Will WR allow a GB for these headers.

ItsMyDaily

11-16-2006, 02:07 PM

Will the fitment problem be taken care of before release,when will it be released.Im seriously thinking of going with WR.

converting to the 4-2-1 now eh :wink:
j/k I would wait to see final results also before choosing one design over another. Besides the Megan does not have any dyno as of yet.

WRLEO

11-16-2006, 02:27 PM

The header will be fixed of course before sale.. dont think anyone will buy a header that doesnt kit.. lol..

YamilR

11-16-2006, 03:07 PM

Since most of us own the AEM or TRD CAI, can you throw some number for us? Also you mentioned a posibility of a group buy?

ps. don't forget to become a supporting vendor, so that will continue to kick ass with this forum

kngrsll

11-16-2006, 03:23 PM

i wasnt planning on buying anything power wise other than a panel filter and axle back exhaust, but if those numbers hold up, i would reconsider!

Katana

11-16-2006, 06:05 PM

Mr WRLEO please consider making a header for my poor little 1.3lt engine!!

Violin

11-17-2006, 07:06 AM

Just as a Teaser.
This ii what the Header & Intake together made as far as Power.
We could only bolt one of the downpipe bolts to the header, so it was kind of like semi open exhaust, but it will give you guys an idea of how much it will produce with a exhaust system put on, since the car had stock exhaust.

I hope you'll be doing a dyno run with just the header for comparison purposes (once you get the fitment right).

Does yours ship with new gaskets?