DC Sports Header install and evaluation

[catliektheif]

I just installed mine yesterday and i LOVE it. it was a PITA to take out the stock header without a 12mm deep socket.. so if you are thinking of getting the dc header make sure to get one! I ended up going to the store to pick one up when i got to the last bolt.. lol. No CELs and no leaks! Definitely recommend it.

I have an afe short ram, trd axleback, MI pulley and I'm an AT. I definitely feel a difference and getting to 60-70mph is like butter.

[kappa_md]

TRD made a 4-1 header (exhaust manifold) for the Vitz 1NZ-FE.

[JustDidIt]

Originally Posted by kappa_md

TRD made a 4-1 header (exhaust manifold) for the Vitz 1NZ-FE.

Yup they did. Welcome to a 3 yr old thread.

[SirDigby]

yeah. it's not even useful information...

[tarkus]

OK, I would love to know if there are any other good headers out there which give similar low Rev improvements.

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[SirDigby]

Weapon R is for low RPM gains
DC is for high RPM gains
Megan is....idk cheap?

[enviri]

Originally Posted by SirDigby

Weapon R is for low RPM gains
DC is for high RPM gains
Megan is....idk cheap?

you forgot OBX :P

[tmontague]

Originally Posted by SirDigby

Weapon R is for low RPM gains
DC is for high RPM gains
Megan is....idk cheap?

This is true based on the 4-1 vs 4-2-1 design. However, I did notice the torque curve shifted left by about 500 rpm or so with the dc header. This made a difference in the low end still.

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

[SirDigby]

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!

[enviri]

I have the TRD. My car enjoys it alot, lol.

[SirDigby]

Originally Posted by enviri

I have the TRD. My car enjoys it alot, lol.

can you still buy them? i think i only found 1 for sale and it was like $300

[williew2]

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.

[tarkus]

Originally Posted by tmontague

This is true based on the 4-1 vs 4-2-1 design.

So which gives better low end or high end?

I also see a number of Yaris sports headers on evilBay, and I wonder if they're any good or should be avoided.

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[tmontague]

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

[tarkus]

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

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[tmontague]

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

[enviri]

Originally Posted by SirDigby

can you still buy them? i think i only found 1 for sale and it was like $300

You can still buy it, yes.
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.

[tarkus]

Originally Posted by tmontague

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

That's a good point. I had been wondering if there wasn't a catch to some of these cheaper headers.

Sent from my phone. Please excuse any typpos.