its all good - the OZ was a waste of a model. I actually like the rallyart edition. It has a little bit longer first gear which i really like and its a 0-35mph stoplight war car just like the tC.

--------------- back to the topic:

Thats the thing - the MMW comes w/ the spipe - I know ZPI is comming out with a header also so thats another option for us. Im very skeptical if draxas even dyno's when they make their pipes because they dont have numbers. I know ZPI would put out a good product and they dyno. I hope they comment on this thread.

 

Draxas has dyno #s for their exhaust, its decent but way too much low end loss... As for ZPI they need to post #s for their exhaust

 

draxas has numbers for their old exhaust - not the new second generation setup. And they say themselves that the dyno results that are posted there aren’t accurate..

 

i think im losing hp then gain even though i have there full exhust sys. but i have 2 cats!!!

 

thats why I would like to see a real dyno #

one of those cats is leaving when you add your header

 

tru.. but i really wanna know what is goin on with the headers.. and rite now i think if they come out with it i wont be able to get it cause im just spent some of my money payin of some tools... and the other is goin to my sc.. i would still like to know about the release date.. maybe i would be able to get it then.. but as far with 4-2-1 header i need up dates cause for me i feel ripped off cause if they extend it back more theres not point of the s pipe and i think speak for every1 on this

 

the final design of the header isnt complete. DraXas only showed you that pic to get an idea of what the header could look like, not will look like.

And what draxas meens by the size of the pipes is the first 4 primary pipes (needs an inside diameter measurement), then the two pipes, and then the collector (which is probably 2.5 like you stated)

 

One thing that I dont like is the O2 sensor placement on all the aftermarket headers for the tC. The stock manifold has it placed in the collector to properly monitor the exhaust gases from all 4 cylinders. When it is placed in one primary, you are adjusting the entire engine's fuel curves with one cylinder. this could be potentially hazardous if that one cylinder has a problem, or if all the other cylinders are running lean/rich due to a bad injector or whatever. The computer could go blind to the problem and not make the proper adjustments or throw the proper CEL. It is something that I think should be address. On the 4-2-1 design, I am aware that this may not be possible, but at least put it where two are merged so you can monitor more than one cylinder.

I know people will say "jim-bob has been running the header for years and never had a problem"...to which I say, good for him. He has never had a bad injector, or a bad plug, etc. It could happen though and I think it is potentially unsafe to run the primary O2 sensor in a single primary.

my $0.02.

 

The next time we are down at the dyno for testing we already have a Scion tC lined up to perform the testing on. This way we have up-to-date, accurate, dyno numbers to post.

I have not heard back from MMW via email, regarding the size of the tubing used in their header. I would think it would be a minimum of 1 5/8" primary tubes, and then maybe 2" secondary tubes into a 2.5" final collector and exit.

 

I don't understand why everyone is waiting so long for this header.. it's not like there isn't 3 other companies that make a header for the tC.

 

People are willing to wait for the header because they know it will be the highest quality header on the market, made by a company that provides excellent customer service and stands by their products with a top notch lifetime warranty.

Plus, there is only one 4-2-1 header on the market currently.... and I have not heard many good things about MMW and how their company is run.

 

I actually have the MMW header/s-pipe running with my DraXas catback system and TRD supercharger. I had to sell my DraXas s-pipe. I couldn't wait any longer.

by the way, the sound of this combo is AMAZING!

 

Will the price be cheaper then the MMW?

 

Because we are hoping it will be a first TRUE (DC header is kind of in between) 4-2-1

 

I guess I'll keep an eye out for a dyno.. Personally, I don't think this exhaust will gain any more power then the megan header..

Also, the cost is going to be much higher..

Draxas's catback exhaust is more then double the price of the megan exhaust and HP and torque gains are almost EXACTLY the same.

 

Um actually the MMW is currently the first and only TRUE 4-2-1 header for the tC. The DC Sports header is NOT a 4-2-1. They seem to misprint the product description.

 

omg this is all killing me, I dont know what header to choose from, I do not have an exhaust, but I want a header and need to know which will give the best hp. i will be buying a header by june. should i wait for this draxas one? or alphawerks?

 

Ok, to clarify all of this confusion:
DC = 4-1
Alphawerks = 4-1
Megan = 4-1
MMW= 4-2-1 (the header is also the S-Pipe in a sense)

As for the power gains in the megan and DraXas systems, DraXas will be re-dyno'ing to get the correct numbers. DraXas quality is also LEAPS AND BOUNDS better than megan in every aspect. Megan Racing is known for their not so good quality work. DraXas has a LIFETIME warranty, and the parts are top notch. Megan is cheaper than ANY exhaust system and header out there... and there is a reason for that. As the saying goes, "you get what you pay for" is nothing but true in the automotive world. When the Megan header was released, the flange was breaking, causing alot of tC owners that had that header a big headache. Not only could that competely destroy that header, but it could also damage the head of our 2AZ-FE Engine. Please research every product and companys back round before you purchase something.

Now if we could please stay on topic of the DraXas header...

 

I knew people would bite on that... I wasn't taking MMW into consideration. As for the DC, it's end pipe is split, never actualy coming into one until it reaches the down pipe (s-pipe). So thats why I said its in between.

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Megan also has a lifetime warranty.

Yes, Megan is cheaper than any exhaust system and header out there.. I don't consider that I bad thing. Their products produce even or greater HP then similar products twice the price.

It seems like you're more worried about the name on the product, then the product itself.