deltr0n`

ok so far ive got this , this , and on friday i'll be getting this .... will the N1 hook up to the collector or is it too short? do i need something else to put after the collector? im not sure...help me out.

casio

i have that header, but my pipe looks quite a bit longer than that. i'd say well over 2 foot, but not quite 3. or maybe 3, i haven't seen it in awhile (being under my car and all).

YakATK

Just wondering why you bought the road race header and then a add on collector and not just get the streetable header/collector? You only saved maybe $10 by doing it the way you did. Just curious to reason is all.

Scott 89t2

you will lose power by collecting there...

either get the collected header. collect it a foot infront of the muffler. or don't collect

Evil Aviator

I don't understand. Is this for a race car? Is that the Dual N1, or a single N1?

The uncollected header and add-on collector allow for a "long primary" setup in which the header pipes collect 90-130" from the exhaust ports and feed into a single muffler. This is what I have on my 1Gen. However, I have no idea what deltr0n is trying to accomplish here.

Evil Aviator

Oh, is that supposed to be a N1 catback attached directly to that collector and muffler? Oh boy.

Scott 89t2

my understanding is the collector is the midpipe. to collect the uncollected header to a single catback. and his question is if the collector will be long enough to go between the header and catback...

Evil Aviator

So where does the cat go?

Scott 89t2

in the garbage where it belongs

Matt22

iTrader: (10)

it would appear your gonna be too short. my guess is the length of the 2 precats. lates Matt22

Evil Aviator

Well, he lives in Kalifornia, so is this a track-only race car? It's never going to pass emissions without a cat.

defylogik

run the rb street header, the rb silencer (cat replacement) and the apexi n1 exhaust.

you will be very berry happy.

oh yeah, **** catalytic converters.. who cares about the environment..lol (and kill small animals, and only eat meat)

-scott

deltr0n`

no cats here, dont need it, i can get it smogged just fine without it.

is this not a good thing to do?

THATS exactly what i want to know. no race car here, this is my streetable daily driver, i just for one; wanted the most power (dont forget this road race header i have is the modified one from mazdatrix that allows for the 5th and 6th port actuation), and two; wanted to do something different.

Matt22

iTrader: (10)

lets get real here,
you only need your cats once every 2 years is it,
only to pass emiisions. I live in a emissions free
area so I put my cats in the garbage long ago.
lates matt22

88IntegraLS

If that is to be your daily driver, it will be loud as ****. I had the RB collected header, RB presilencer and dynomax catback and it was too loud for my taste. But I am getting old . . . so you might like the loudness. It will get you noticed, that is for sure.

Evil Aviator

OK, I thought you guys had a visual inspection, in which case the lack of a cat and that illegal header would be a problem.

How do you pass the sniff test with a rotary engine and no cat? I was just wondering because I may be moving to an emissions-controlled area and could use some hints because I'm worried about my carbed 12A.

Your collection point on a stock-port or street-port engine should be about 18-27" on a short primary system, or about 120-125" on a long primary system. I'm taking a guess here, but if the headers are about 30", and the collector has about 10" from the tube ends to the collection apex of the Y, then that puts you at about 40". Once again, I don't know how accurate my guesses are, but I think that your collection point is not optimal for good power, as Scott 89t2 stated earlier.

I don't understand why you didn't just order a plain muffler without the catback piping, and simply fabricate the appropriate muffler tubing to fit. Anyway, I don't think that 14" Y collector is going to be long enough, so you will probably need some extra pipe anyway. Just as a hint, the more components you bolt together with flanges, the easier they are to replace.

I hope your catback comes with a pre-silencer as shown in the picture, because it's going to be pretty loud otherwise. Actually, it may be pretty loud even with the pre-silencer, lol.

deltr0n`

well, i havent ordered the catback yet...thats what i plan on buying though. i guess it would be a better idea to get just the muffler and have custom piping done. thanks for all the input.