I should be starting on the next prototype header the first week of December. Corey and I will keep you posted.

SMSP - Who hopes VTEC will be more enjoyable this time around.

 

Well either you're gonna get my business or Mugen is........ I'm considering your header or mugen's

 

Were waiting plz keep us posted... Lot of forth gens running DC's and Gready's but they just don't cut it... Actually they suck. So yes we can't wait. God I hope our CND dollar goes up a little in time...

 

Any clues on what kind of design your going to use? 4-1 or 4-2-1? Any pics of the one youve already made? I think it was a 4-1...? not sure..

 

um actually the greddy is a good header. i dont know where you get off saying that it sucks.

SMSP has already developed a 4-1 and a 4-2-1. the 4-1 had frame and ground clearance issues and was scrapped. this next prototype should be the second 4-2-1.

 

ok the DC sucks. The greddy is mediocre, I don't think there are significant gains in going from a DC to a greddy.... SMSP on the other hand....

 

Have u already set a price for the header...if so how much are we looking at???

 

ok understandable. but you have to be honest.. the greddy is a mass production header (so is the DC, but the DC sucks). i think the greddy gives pretty good gains from what ive seen on msgboards for a mass production header.

you have to remember that the SMSP is not a bolt on (in the normal sense) header. it is custom, hence the price. it has a bigger collector, which means that you need a new cat. of course the SMSP is going to yield larger gains. its for a more targeted market whereas the greddy is for 'everyone'.

this is not to take anything away from SMSP though. ive been following the work for a while on both ITRs and on Corey's lude and im positive that i will be buying this header.

 

I already posted about the price, search button, but they are to be around $1300. Can't wait!!!

 

Make me a 4-1 header with real primaries that fits in an accord chassis and you got my money.

 

The price is not finalized since the design isn't finalized. I've never made reference to a $1300 price, but more in line with my current B series headers.


[Modified by SMSP, 12:17 AM 11/17/2002]

 

you might as well buy a dc 4-2-1 and some nitrous for that price.

 

It just depends what you are trying to do. For a street only car I personally would have to agree with you completely. Who cares about a few more N/A WHP? (Although if you have that kind of money why not?) But for a wheel to wheel road race series like Corey runs where the competition is really fierce and the # of mods you can do are very limited you need every available hp you can get. Unfortunately, there is just not a cheap and bad *** header option for the Prelude like there is for the Integra. (Like the DC JDM 4-1 Type R copy). That really sucks as I think if a large company like DC did their homework and produced a really quality piece it would sell like mad.

 

Hi Chris!

So what makes this header so good??? And how are headers like DC for everyone if its one for the Prelude?

 

I don't know anything about the SMSP headers for the Prelude. Corey says they make more power than the DC and though I do believe Corey you must always keep in mind that it would be unwise for someone to talk badly about their sponsor. I always like to rely on dyno numbers. The problem is you need to dyno the same car on the same night with the different header to see the real difference. How many people really do that? Someone did do that exact comparison between various headers on an Integra Type R and the test included the SMSP and the DC JDM 4-1 header. The SMSP had a virtually identical torque curve as the DC but the SMSP made about 1/2 to 1 more peak WHP. To put this in perspective, I did about 50 dyno runs of my old 3rd gen Prelude and on the same night with the exact same setup runs would vary as much as 2 peak WHP betweens runs. Even with letting the car cool down between runs. It would be safe to say that such tiny differences would fall in the range of standard deviation.

But the DC JDM ITR header is probably a lot better header than the Prelude DC 4-2-1 header. I am quite sure that any SMSP header would make substantially more power that the DC unit. The question is just whether that gain is worth it to you? It damn sure ain't cheap! My JDM DC is under $300. But Integras are cheaper cars to mod than Preludes.

 

you cant compare the JDM DC for the integra to the USDM DC for the prelude. iirc the JDM DC for the integra has the 2.5" collector. thats the reason for your gains. if you try to compare the USDM DC for the integra, i bet you get similar numbers as for the prelude.

 

Please send us your DC 4-2-1 when we dyno this next header and we'll test it also. We'll run it open I guess.

Here's the dyno between the 2 headers I've built so far.

https://honda-tech.com/zerothread?id=291926

 

Dave this is the only reason I gave that number out, it was a response to an earlier post i put up.

https://honda-tech.com/zerothread?id=322648

 

I'm the one that put down that very approximate number. That was upon the basis of the B series header, just remember that it's an extremely rough number and considering your exhaust, cat, and other things will need to be modified it might go up or down depending on the final design.

 

First of all, the DC header for the prelude is NOTHING like the ITR JDM DC header offered for the B series motors.. The pimares are the same size on the DC prelude header as the D15 motors! The collector is 2" compared to the 2.5" used on the JDM headers...

We have dynoed the headers more than once, but never back to back with a stock or DC setup.. But, I have been on track before and after the SMSP header, where my previous header was the DC.. When I went to CMP, I had a major problem, I was banging the rev limited EVERYWHERE.. Where the DC clearly died in power in the upper 1000rpm, the SMSP kept making great power. Then we dynoed the header, and it showed why.. About every USDM header would fall off in power in the upper RPMs, where the SMSP did not, and thats a huge deal to anyone who wants to take advantage of the prelude's great gearing.. Plus, I used to Draft ITR's, now they Draft me...