DC Sport Header

nismo · Post by **nismo** » Fri Nov 05, 2004 1:28 pm

Just cruisin the net and I ran across this:http://store.racerwheel.org/d42-thc4402.htmlI thought that DC sports only made a header for the 2zz.Inder

Raven · Post by **Raven** » Fri Nov 05, 2004 11:03 pm

Matrix 00-04? Funny, I've never seen a 00, 01, 02 Matrix. If they messed that up, they probably forgot the S on XRS also.

MadBill · Post by **MadBill** » Fri Nov 05, 2004 11:18 pm

Here's what their site says:http://www.dcsports.com/product_headers_app.aspLast I heard, they had initially decided that the Corolla part worked for the Base Vibe and XR Matrix, until a disgruntled customer pointed out that the Matrix exhaust manifold had an O2 sensor and the Corolla did not! Now they seem to list the Celica part as interchangeable. Guess someone needs to buy one to find out for sure...Here's a thread by our Matrix cousins on the subject:http://www.matrixowners.com/mo...30035

ragingfish · Post by **ragingfish** » Sat Nov 06, 2004 1:59 am

Quote, originally posted by Sunny Â»The Celica GT is a 2zz.I thought the GT was a 1ZZ and the GTS was a 2ZZ?

silver_vibe · Post by **silver_vibe** » Sat Nov 06, 2004 2:49 am

Quote, originally posted by ragingfish Â»I thought the GT was a 1ZZ and the GTS was a 2ZZ?Yes.http://www.toyota.com/vehicles....html

nismo · Post by **nismo** » Sun Nov 07, 2004 12:52 am

Okay, so for this, I should ask DC Sports cuz this does not seem real accurate. Since the fact that it says 00-04 Matrix XR, which is messed up. Anyways, yeah, but I will contact DC Sports/Injen and talk to them. By the way, DC Sports and Injen have actually merged as one. But they are still keeping their names though. But now you can buy a Injen exhaust which is actually made by DC, which is kinda cool, I think.Inder

wicked1981 · Post by **wicked1981** » Sun Nov 07, 2004 2:56 am

Quote, originally posted by TRD4reel Â»Okay, so for this, I should ask DC Sports cuz this does not seem real accurate. Since the fact that it says 00-04 Matrix XR, which is messed up. Anyways, yeah, but I will contact DC Sports/Injen and talk to them. By the way, DC Sports and Injen have actually merged as one. But they are still keeping their names though. But now you can buy a Injen exhaust which is actually made by DC, which is kinda cool, I think.InderMatrix XR/Vibe (base) and Celica GT are have the same engines. The site is correct.

MadBill · Post by **MadBill** » Sun Nov 07, 2004 3:55 am

Wasn't it AEM that bought DC?

nismo · Post by **nismo** » Sun Nov 07, 2004 4:32 am

Nope. AEM is still it's own company. Injen and DC combined. I think that's pretty cool myself. I've had great expreiences with Injen, and I know a lot of people with DC Sports header/exhaust say that they are pretty well made. Inder

ragingfish · Post by **ragingfish** » Sun Nov 07, 2004 4:35 am

I'm gonna have to go with bill on this one..."DC Sports: An AEM Performance Brand" it says right on their site...

nismo · Post by **nismo** » Sun Nov 07, 2004 4:38 am

My bad . Guess you guys were right. You learn something new everyday, right?Inder

DocHolliday · Post by **DocHolliday** » Tue Nov 30, 2004 8:14 am

I know this thread is three weeks old, but I wanted to clarify something. I use the DC Sports Celica GT header on my base Matrix. The header fits, but it doesn't have a bung for the O2 sensor. You can use it, and have it work great, but you will have a CEL (like I do) until you install an O2 sensor.

nismo · Post by **nismo** » Tue Nov 30, 2004 8:29 am

Did you notice a difference in horsepower/torque?Inder

Dezz1 · Post by **Dezz1** » Tue Nov 30, 2004 6:20 pm

Fellas, the Vibe GT and Celica GTS both have the 2ZZ. The Base Vibe and the Celica GT both have the 1ZZ.

MadBill · Post by **MadBill** » Tue Nov 30, 2004 9:34 pm

I think that's the point. The Celica GT engine and header are identical to the Base Vibe's EXCEPT that the Celica's O2 sensor is downstream from the header. When DC Sport test fit it on the Vibe, they overlooked this, and so declared them interchangeable until Doc found out different the hard way. DC knows about it now, so it should be pretty simple for them to weld in a bung on the Celica p.n. to accommodate the Base Vibe. For the cost involved, they might be better off with just one p.n. and supplying a plug for the bung when using it in a Celica. BTW Doc., until you get the O2 sensor installed, your engine will not be able to re-tune the AFR for the header, so you may be missing some of the performance gain...

drunkenmaxx · Post by **drunkenmaxx** » Wed Dec 01, 2004 12:14 am

forgive me for asking, but i gotta know. is this "bung" what a "bunghole" really is?

DocHolliday · Post by **DocHolliday** » Wed Dec 01, 2004 12:40 am

Quote Â»Did you notice a difference in horsepower/torque?I basically did I/H/E at the same time, which resulted in ~140whp. I tested this using a G-Tech performance meter, which isn't as accurate as a dyno, but gives good approximations. I double checked the whp results using my 0-60 time (curb weight in kg/0-60 in seconds = approximate bhp) After adding the grounding system, it went up to ~145whp.

damronjr · Post by **damronjr** » Wed Dec 01, 2004 1:02 am

That pretty much voids all warranty on your engine does it not?

DocHolliday · Post by **DocHolliday** » Wed Dec 01, 2004 11:45 am

It voids me emissions warranty. Toyota would be hard pressed to say that ground wires void my engine warranty. Remember, they have to prove that a mod is the cause of trouble. Missing the first O2 sensor might make me run a little bit lean, but Toyotas are tuned rich to begin with, and it's nothing that would damage the engine. Worst case scenario, I don't get 32mpg in the city and I'm an LEV instead of a ULEV.

joholste · Post by **joholste** » Fri Dec 31, 2004 7:19 am

a bunghole is the hole in a keg where the spiggot is placed, how do i know this you may ask, lets just say I grew up in nebraska where there is not a whole lot to do besides drink

Lucky317 · Post by **Lucky317** » Wed Jan 12, 2005 5:01 pm

this post is a lil old but the DC sports header for the 2ZZ isn't worth it. I gained .8 whp peak, lost a lotta hp here and there throughout the powerband and only gained 1 wtq. the base run was I/E. the header vs stock gained 10.3 whp. my car was the prototype car and this is what it got.

Raven · Post by **Raven** » Wed Jan 12, 2005 9:20 pm

Quote, originally posted by Lucky317 Â»this post is a lil old but the DC sports header for the 2ZZ isn't worth it. I gained .8 whp peak, lost a lotta hp here and there throughout the powerband and only gained 1 wtq. the base run was I/E. the header vs stock gained 10.3 whp. my car was the prototype car and this is what it got. So, what you are saying is on a GT it is not worth it (.8 whp) but on a base 1ZZ you gain 10.3 HP?

Lucky317 · Post by **Lucky317** » Thu Jan 13, 2005 3:19 am

no, I was refering to a stock 2zz. for example,we took a 100% stock 2zz(celica) and added only the header. we gained 10.3 whp. then we took the same 2zz and added I/E we dynoed 170whp 120 wtq. after adding the header (making it I/H/E) we dynoed 170.8 whp and 121 wtq. make sense now ?

nismo · Post by **nismo** » Thu Jan 13, 2005 3:21 am

What is the stock dyno on the 2zz? I forot actually.

Lucky317 · Post by **Lucky317** » Thu Jan 13, 2005 3:40 am

you'll see anywhere from 151 to 161 whpI dynoed 151

drunkenmaxx · Post by **drunkenmaxx** » Thu Jan 13, 2005 3:49 am

Quote, originally posted by Lucky317 Â»you'll see anywhere from 151 to 161 whpI dynoed 151 ????? why so low? stock gt=180?

MadBill · Post by **MadBill** » Thu Jan 13, 2005 3:49 am

Sounds like either testing anomalies or a calibration (e.g. too lean) problem. There is no other logical basis for the header to be effective only in the absence of a muffler and CAI/SR.

damronjr · Post by **damronjr** » Thu Jan 13, 2005 4:00 am

Quote, originally posted by drunkenvibe Â»????? why so low? stock gt=180?180 is not whp is it, that is actually the flywheel hp produced by the engine is it not?

drunkenmaxx · Post by **drunkenmaxx** » Thu Jan 13, 2005 4:16 am

Quote, originally posted by damronjr Â»180 is not whp is it, that is actually the flywheel hp produced by the engine is it not?>i dunno...

Lucky317 · Post by **Lucky317** » Thu Jan 13, 2005 4:33 am

180 hp that the factory rates it is NOT whp. also the dynos were done 3 runs each way and at the same temperatures to ensure accuracy. one thing you'll find is tha tthe stock header for the 2zz is NOT bad. only ting thats gonna show big gains is a true 4-2-1 race header. there are some very expensive headers out there for the 2zz and the most anybody has ever dynoed was 5whp gain from a $900 header. it was only done on 2 cars. everone else even with the same header made lil to no gains. this has been a largely discussed topic in the celica forums.

damronjr · Post by **damronjr** » Thu Jan 13, 2005 4:38 am

Quote, originally posted by Lucky317 Â»180 hp that the factory rates it is NOT whp.That is what I thought. Thanks for clarifying.

DocHolliday · Post by **DocHolliday** » Thu Jan 13, 2005 2:36 pm

2ZZ engines do well with a port and polish job on the stock header, as they are exceptionally built. On the other hand, the 1ZZ, as an economy engine, will see greater results from mods, since I/H/E really open it up and increase its aspirative capacity.

DC Sport Header

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