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04-18-2017, 10:29 AM | #199 |
Drives: '08G2T Prius Join Date: Oct 2012
Location: United States
Posts: 163
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04-18-2017, 09:52 PM | #200 |
Drives: 2007 yaris 3 door Join Date: Sep 2015
Location: Denver, Colorado
Posts: 1,000
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yeah. it's not even useful information...
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04-19-2017, 08:03 AM | #201 |
Drives: 2006 Yaris RS 3-Door Join Date: Feb 2016
Location: YYZ
Posts: 329
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OK, I would love to know if there are any other good headers out there which give similar low Rev improvements.
Sent from my phone with Tapatalk. Please excuse any typpos. |
04-20-2017, 01:00 AM | #202 |
Drives: 2007 yaris 3 door Join Date: Sep 2015
Location: Denver, Colorado
Posts: 1,000
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Weapon R is for low RPM gains
DC is for high RPM gains Megan is....idk cheap? |
04-20-2017, 08:57 AM | #203 |
04-20-2017, 10:37 AM | #204 | |
Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
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Quote:
This is likely due to the fact that our headers are so short because of the rear exit design which doesn't make the headers act like tradditional long tube deigns That said I've never used the weapon r header
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No one ever wants to give a Yaris the point by... |
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04-20-2017, 10:05 PM | #205 |
Drives: 2007 yaris 3 door Join Date: Sep 2015
Location: Denver, Colorado
Posts: 1,000
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oh yeah, OBX. also cheap. ha!
i think the manifold design is due to the placement of the catalyst as near to the engine as possible to aid in warm-up. i have a weapon R. i have never used a DC. ha! |
04-21-2017, 12:10 AM | #206 |
I have the TRD. My car enjoys it alot, lol.
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04-21-2017, 09:07 PM | #207 |
Drives: 2007 yaris 3 door Join Date: Sep 2015
Location: Denver, Colorado
Posts: 1,000
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04-22-2017, 03:50 AM | #208 |
Drives: Yaris YR 2013 Join Date: Feb 2017
Location: Australia
Posts: 22
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the headers I have are a OBX or a copy or something made by GODSNOW?? fit perfect expect for the fact they are a tad (10mm) longer and are causing the cat converter to bump on the x-member, stil lto fix it properly butfor now I'm using the natural elasticity of the exhaust and hangers :) made a nice difference to note and revs also throttle off is not as drastic.
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04-22-2017, 11:50 AM | #209 |
Drives: 2006 Yaris RS 3-Door Join Date: Feb 2016
Location: YYZ
Posts: 329
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04-22-2017, 12:53 PM | #210 |
Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
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Most of my Yaris stuff including my DC header was purchased off ebay. It's negative connotation is due to the early years of ebay, many top brands use ebay to get their parts out there, just be smart about the brands you are buying.
Typically a 4-2-1 gives more low end torque and a 4-1 gives more upper. However, we are talking about true long tube headers such as the RPM header for the Tsport or XD which tends to give all that extra power above 3k rpm as it is a 4-1 header. With the Yaris headers, they are so short due to the rear exhaust exit that it doesn't seem to make a noticeable difference in which design you go with. I had the DC header and noticed a shift of the power band left by about 500 rpm and it seemed to perform better up top. That said, it wasn't until I got the MicroImage intake manifold that I noticed a big difference in the upper rpm's. ...still fell on its face about 5.5k rpm compared to the 2zr though... IMO if you don't plan on doing other flow mods ie: custom exhaust, air intake, intake manifold, 1zzTB, then I'd go with a 4-2-1 design. If you plan on improving the air flow of the 1nz with other mods then go with the DC header. Either way you'll be happy
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No one ever wants to give a Yaris the point by... |
04-22-2017, 10:17 PM | #211 |
Drives: 2006 Yaris RS 3-Door Join Date: Feb 2016
Location: YYZ
Posts: 329
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So just for example, does this one look legit?
http://vi.raptor.ebaydesc.com/ws/eBa...=1492913724413 Or maybe this one? http://m.ebay.ca/itm/06-09-YARIS-1-5...ATCHING_ACTIVE Sent from my phone with Tapatalk. Please excuse any typpos. |
04-23-2017, 01:34 PM | #212 |
Drives: '08 2zr swapped Vios M/T Join Date: Oct 2012
Location: Caledonia Ont.
Posts: 2,938
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No idea about either of those brands. They are very cheap when compared to a dc header but cheap headers are also known to have cheap welds.
If you don't mind wrenching on the car a lot then you could try the cheap one, but if you want a reliable header that you install and forget then go with a known brand like dc
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No one ever wants to give a Yaris the point by... |
04-23-2017, 04:52 PM | #213 | |
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you aren't going to find one new for less than nearly 700...before shipping. When they first came out it was 1000 bucks. There's currently a used one up for sale in japan for ~500. |
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04-23-2017, 09:33 PM | #214 | |
Drives: 2006 Yaris RS 3-Door Join Date: Feb 2016
Location: YYZ
Posts: 329
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Quote:
Sent from my phone. Please excuse any typpos. |
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04-24-2017, 12:21 AM | #215 |
Drives: 2007 yaris 3 door Join Date: Sep 2015
Location: Denver, Colorado
Posts: 1,000
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i'd say, "you get what you pay for" in most cases. cheap manifolds usually don't line up just perfect or have the best geometry or welds. i had an obx on my civic for over 200,000 miles without any issue. ($50) but, i'm also a cheap-ass and look for a better deal, and the complete exhaust was custom, so it did not matter if it lined up when purchased. i would not pay $500-$1000 for a TRD seeing how the gain is so minimal.
i do disagree with the 4-2-1 vs 4-1 for performance stated above. 4-1 manifold gives a better top end torque because of where the collector location is in reference to pressure point of cylinder pressure drop during high rpm. (high rpm=high pressure scavenging further in the tube) 4-2-1 allows high pressure scavenging to occur at lower rpm, between sister cylinders; wile high rpm scavenging still occurs, but at lower pressure, so it has a less dramatic effect on high end performance. since i do a lot of city driving, the most noticeable gains should live in the 500-3500 range. (4-2-1) i do not believe there is a "better" design, i think it all depends on where in the RPM range you want the gains to be most noticeable. in the civic, i was driving from denver to phoenix every weekend. (1500 miles r/t) the obx was a 4-1 because it was always on the highway running as fast as possible. it all depends on your utility. |
04-24-2017, 12:26 AM | #216 | |
Drives: Yaris YR 2013 Join Date: Feb 2017
Location: Australia
Posts: 22
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