they are all from reputable companies so im sure they are all good. rrm is beneficial if youre gonna do rrm turbo but it doesnt look as cool to me. you can get the rpw polished as well but i dont think with the rpw you can see every weld like the rrm. never seen the kamikazi so i dunno ?

 

<In his best David Thomas voice>
Check with Vision Imports for pricing.

 

I have first, second and third hand experience with half of these header companies.

kamikaze is inconclusive, because I sat inside a friend's OZ with the product. I think he was driving conservative rowing through 2rd to 3rd and 4th. It didn't feel much of a gain going toward 5600 rpm.

But doing a U-turn in a mall, he blasted his 16's with massive wheel hop and sqeeling tires. I thought the car was going to understeer into a curb and bounce off a neon in a corner. So, I knew it had TQ or some sort.

As for RPW, the G93 guys who have them . . . love them.They lose a bit on the low end, but they gain big #'s towards the upper rpm (remember we have 500 more rpm to spare). W/ cam and RPW header, the pull is even more insane.

Of course, I had OBX for my mirage (non for the lancer that I know of). I know I had a min of 12 HP gain on flywheel, and it changed my powerband dramatically. I gained tons of TQ on the low end, moderate in the middle, and modest HP on the upper end. Again, their quality sucked **** on the cermanic paint . . . devloped chicken pox rust spots after 8 months and during rainy season.


BTW: it would be interesting if kamikaze or RRM header fits on the G93. It think it can since our motor height is slightly less than the G94. Moving O2 sensors for either federal or cali spec shouldn't be a problem . . . having an O2 slot closer to the exhaust port is a lot better to gauge the motor's temp than near the cat-converter.

 

I would go with the RPW, But since I'll be doing Trubo soon I'll wind up getting RRM Header..

 

If you know that there is not going to be a turbo in your future then I suggest getting the RPW because it does have the down pipe. However, if there is a chance your going to Turbo your Lancer then I suggest RRM because it is compatible with their turbo kit with minor modding. From what I've heard around the boards they are both wonderful headers and you can't go wrong with either. I voted RRM because there is a chance that I will turbo my Lancer in a year or so. just my $0.02.

 

is that right?...............

 

Yes it is. I also think I remember someone saying the RPW turbo comes with a turbo manifold.

 

It is my understanding that a downpipe seems desireable for the money, it may not be such a good thing. Why? Loss of midrange power and torque. Turbo cars running big boost like an EVO benefit. Lancers are not in need of such large diameter exhausts, even if they are turboed and running les than 8 psi.

RRM all the way. Very pleased with mine.

 

Unless you're getting an RRM header and an RRM turbo kit, don't expect things to bolt up. Even then there will be a little modding required (Boe says it's fairly simple though if I remember correctly).

 

I guess I don't understand the principle of mixing and matching exh mani.

If you look at NA header, they are designed differently with a lot of straight long lines. For TC mani, they look completely different.

Look at mitsu stock turbo mani, it's a short, blocky, L-shaped (unless RRM goes this route on the NA setup w/o downpipe- will look at their product later).

Then, look at ebay for the exh mani on TC H&A and the SR20DET. There are tons of short curves before dumping into the TC.

 

Well I did this great response which would have helped a lot then it rejected my photo and erased everything I wrote.

So I will be blunt now.

Great thread and please be aware we are not bagging any other brand here.

The main thing people are focusing on with the RPW headers is the down pipe. Consider our headers are twice as long as other brands for the reason to improve torque at low rpm levels as well as mid range and top end horsepower.

Shorty headers are a great improvement over the stock manifold without a doubt and where used with the stock flexpipe don't show the traditional problems of good top end and lousy bottem end torque.

WE designed our system to have both torque and high power hence the combination of long primary headers to maximise torque and power with larger higher flowing flex pipe for future improvements and direct bolt up

For comparison check a photo of the following link and compare to other systems to really understand the difference in design - it is worth studying.

I agree with other people thoughoif you are going a RRM turbo kit then definitly there header is value for money. If not then consider the alternatives.

Here is a link to a decent photo of our systems check them out as I am sure people wil see what you are getting for you rmoney.

http://www.rpw.com.au/New%20Website/...extractors.htm

 

Most stock turbo manifolds are short and L shaped becuase they make them cast iron in order to keep them from cracking through prolonged use/abuse.

The design of a turbo manifold depends upon what you want out of it really. Mine looks nothing like RPW's T-25/28 which looks nothing like RRM's T25/28, which looks nothing like RPW's TD manifold.

EDIT: Curses. Beaten by a far more informative post.

 

Mitsiman, can you clarify if this is true??

 

It's not compatible. I've already asked cuz I'm looking at their turbo setup and you'll need their turbo manifold to bolt on the turbo. The reason the RRM header works with the RRM turbo is cuz they use a J pipe and you can just spot weld the turbo in place I believe, whereas the RPW manifold, like stealth-wrx's manifolds, integrate the turbo directly in, bolt-on style.

 

ya, factory TC mani was made to be conservative and survive tons of abuse.

I meant to say aftermarket TC mani's have ton of curves at various length and bends.