/\ Well he was going to make a custom header into production, but he canceled that.

 

y r u doubting urself?

the fact is, all headers provide a difference. and the fact that dyno requests, tuning, and HP gains arise puzzles me.

a bunch of other names such as RB, amemiya, OBX made itself on here just means they are being compared to each other... and they aren't even of the same design! this means they are gonna provide different characteristics...

there are SO many approach to designing a header, its really up to the end user to try to understand some black magic behind the tuning to utilize that part.
and the fact is that someone praised liking OBX may just prove that unequal-lengthed ( can also use different pipe diameters) headers and using that headers in the upper rev ranges like that header is designed to do... and it seems like the intentions of the amemiya headers that it is copied off of if it was.

none of this RB, OBX, amemiya nonesense. this unit (to me, but i can be wrong from a trained exhaust tuners eye). lets compare this unit to another similar design... this seems like its built characteristics is to bump up some TQ in the rev-ranges. so being asked to provide HP dyno gains is like asking a trick question...as there may be none, but a more flatter TQ curve.

i can only assume this... but compare the copy off of the original if u can dig up a dyno graph if they have dyno tested it. look for changes on the graph, and accept it. thats the characteristic they tuned for, and you're merely buying the replicated product of the original made by B+ student.

ericmeyer: if u see this...do u have enough background to be able to judge this header by design, or to see if i'm off on the description?

 

u seem like u've seen many performance headers from ur sig...
brand names aside, what characteristic do you see out of a header of this design? and at the rpms they happen at?

just had a feeling u may be able to tell more than i do... since u had tried 11 of them. this must at least be similar to one of them...

 

i believe eric meyer would recommend these headers.

http://www.petesspeedandfab.com/Home.html

these were developed far and away ahead of the RB ones. and if you notice, the RB ones use a very similar collector. if i didnt know better, i would say RB contacted them for some help. or they had a bit of industry "inspiration."

these are street headers. what i dont get is that eric meyer mentioned he (and pete) have developed race headers and that they were louder. how can one header be louder than another if you take shielding (like the oem) out of the equation.

 

^^nice find kersh

the 1st and 3rd primary are reversed in location to the BB unit(doubt it affects much).

eric's and RB's both look like merge-type collector... its kinda tricky as eric's unit seems like a "stepped" primary unit merging to the collector. which appears to be another trick up the sleeves.

16 HP is a big claim, but seeing that air injection delete is incorporated into header design by eric, it may be save to assume there's no CAT in place either...during the design for its intended use.

a grand-am fabricator... doubt he builds much of anything "street" don't you agree?

i agree its one bad-*** header though =)
just not one for me...on a daily basis.

 

really though 16hp?

 

Yes

 

VERY doubtful you could extract 16

 

The pic of that header is my good friend Pete's first effort. The idea (like the other products out there in the marketplace) was to bolt on to the existing downstream exhaust system. In this particular case, it was bolted to a cat and used the stock system which follows.

This shorty style collector is very inexpensive to buy because it is very inexpensive to make.

We found a better power curve when we transitioned from the 3 primary tubes over a LOONGER length and then back to 3, 3.5 and even 4" exhaust widths.

Go here and learn: http://www.spdexhaust.com/index.html

 

Eric probably has more exhaust specific knowledge and data that anyone I know--listen to him. he is the man on this(and other stuff) and he is a rare breed of guy in the fact that he will share the information that he can. It will save a lot of people a lot of work and failed expectations.

Interesting link Eric--picture on top of the custom fab page looks familar? Not your car.
You know years ago i was debating an expansion chamber type design but people took it wrong--i wasnt thinking of the port exhaust timing stuff--just interested in increasing flow, seems I may have been on the right line of thought. wish i had not given up on it.
megaphone stuff--like the old 32 ford header side pipes --in a way? Cool.
OD

 

Can I run a header with a stock mid-pipe?

 

So does Pete sell that header to the everyday guy?

 

Yes

 

prepare to shell out the big bucks. and yes he does sell them.

 

so, instead of having a short collector, having a really long collector makes a better power curve?

 

Yep.....and the longer and more gradual (sp?) the collector the quantum increase in price due to intricate labor effort required to fab those suckers.

I'll take some pics and post. Our cheapest collector (not the one that mates to the stock cat location) was more than the headers in the market place today-----and that's just THE COST (jobber cost).

Therefore, I would conclude that the header resellers/fabricators in today's marketplace started with a price point that the market could afford and then work backwards.

We started with "what makes the most power" and through the cost out the window.

Big differences in the approach to product development.

The other idea is that nobody tests (and this probably has some merit) and everyone says "I can make that too but I'll tweak it here and there". For the most part the ones are the market are all the freakin' same. They might have a 10-20% performance variance and that equals what?? 1 or 2 hp at the most?

Get the idear fellas?

 

i have the boost brother headers on my rx8 and they are just perfect they needed a little of work for fitment but for the price and the gain f power is worth it racig beat they are really good but between the boost brotehr and racing beat i will go with boost brother they are cheap and as good as the racing beat so i will say buy boost brother, as load they are pretty decent i have cat back from mazdaspeed and my car sound really nice my friends and people with other rx8 they say that my car sound better than any other now i still have my cat i will delete the cat by next weekend i will tell you guys how it go .

 

yeah, i'd love to see some pics.

especially of ones that dont mate to the stock cat location.

 

Quillero20, for the love of God learn to use punctuation in a sentence.
The endless run on of words is terrible to see and read!

 

I am currently installing this on my 09. What started as a simple header install has turned into a 3 day project, though they were basically only half days; no work before 1 in the neighborhood.

I'm sure if I go through and do it again it would be much quicker. So far I broke another bolt on the EGR, third broken bolt on this car :-/. The O2 sensor was a pain to remove and I might have to replace it since it looks like the thread was either cross drilled or a self tapping one; it might be leaking.

Today I should hopefully finish it up. I have to do some grinding on the cat to get it to match up correctly. I'm not sure if that was a bad header design or a change on the 09 cat. My guess is a change on the cat.

I didn't have any fitment issues on the header itself. It bolted up to the block and the only hard part was getting it into position. Once we got it all lined up it was a breeze. I didn't like that they gave you bolts for the EGR. The stock header had built in bolts, which made putting the EGR gasket and tube easier to install. Since I broke a bolt installing it (Again!) I used one of the threaded studs from the stock header. iI'd recommend anyone installing this go this route since it made it easier.

For those wondering the stock heat shield does not fit on this. I know the question was posed. It is also lighter; it seems significantly lighter to me, but I haven't weighed it officially yet. Once the car is actually running I will weigh the old header on a postage scale. I'll also get some videos for sound clips.

EDIT: Here is a link to my friends post in his forums of our problems with pics. I'll be making a post once it is all said and done.
http://www.sr20-forum.com/members-ri...tml#post312262

 

the stock manifold weighs 17lbs.

i'd imagine it would be at least 5lbs lighter.

 

watch your passenger side motor mount. Heat from the header can affect it. May not but good possibility.
OD

 

Yeah the heat from that thing is awfully close to the mount and the oil pan. Has me second guessing this mod.

 

Try using some Header Wraps.

 

Yeah header wraps don't last long on rotaries and can damage the header from what I have read.