I don't know weather to get a DC 4-1 or 4-2-1 on my 94 LS.....

I live in South Jersey and the roads aren't exactly the smoothest, and philly isn't too pretty either....

it's my daily driver, and I'm leaning towared the 4-2-1, just b/c of where I drive, it's less risky, why do you guys think???


***side note, I'm getting a high-flow cat, buddy club exhaust, crower 404's, p&p, etc....**

Do I loose that much from getting a 4-2-1 or should I get the 4-1 and be brave?

 

If you plan on building the engine, and it sounds like you do.

The 404's will shift your powerband way up in the rpms.....
The PnP will also move your powerband up.

I think the choice is obvious from here.

 

I think if you get the right 4-2-1's, they can be sufficiently effective. I used to have the Comptech 4-2-1 on my old gs-r. It even says on the site that they're designed for mid-high range power. BTW, my car was fairly slammed and I never scraped them. Comptech is quality man, plus it's legal If I get the funds, I'm gonna get another one...

 

I have always wondered why bother going with a 4-2-1. If you look at your stock manifold it is already a 4-2-1. I know that a header is bent better and smother etc but if your going to spend the money buy a 4-1 and make more power. These cars make all their power in the upper RPM band anyway........

 

A 4-2-1 header gives better midrange torque than a 4-1 header. 4-1 is designed for better high RPM power. It all depends on the engine and what your goals for it are. The 4-1 is great for higher horsepower numbers but you sacrifice lowend power. You can buy a 4-2-1 hybrid that provides good low end torque and excelent high end HP. hope this helps.

 

It really depends on what your future goals on your car is. If you do a lot of city driving, then you would want your torque at a low rpm, but yet still have enough flow for mid and high rpm. your 404 cams would definately make the difference.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RedTegLS &raquo;</TD></TR><TR><TD CLASS="quote">I have always wondered why bother going with a 4-2-1. If you look at your stock manifold it is already a 4-2-1. I know that a header is bent better and smother etc but if your going to spend the money buy a 4-1 and make more power. These cars make all their power in the upper RPM band anyway........</TD></TR></TABLE>

Alot of the high end headers are 4-2-1 (i.e. Toda, Comptech). Why? Because they can maintain and increase mid range torque while still providing a similar high end increase as a 4-1 would offer (see Great Header Test). Therefore, running my Comptech 4-2-1 gives me excellent midrange, and equivalent high-end. No dead spots.

As for the post - I wouldnt get either the 4-1 or 4-2-1 DC sports header. They really arent that good at all. If youre going to spend the money, find a nice JDM 4-1, or a decent 4-2-1 (Comptech, Toda...etc.).

 

for an LS and non-vtec integras you should get 4-1, for GSR get 4-2-1

 

get a header with a nice T3 flange on the end and go from there :-)

 

did you search? if not then SEARCH, and decide from there, but if you don't want to search then i'll say just get the 4-2-1, you'll make more use of it

 

I REALLY wanna get the 4-1, but I'm just scurrrred about ******* up the 2 buttom pipes , thats alll

 

Scraping the primary tubes is more prevalent on the JDM 4-1 headers which have larger tubes, hang lower, and have 2 x 2 box collectors. Not so much on the usdm 4-1 headers w/ smaller primary tubes.

You could always go w/ a JDM 4-1 header w/ staggered primaries. The oem JDM R header staggers the primaries near the oil pan for increased ground clearance. They also sell skid plates that bolt up to the oem jdm R header that protect the primaries from damage. Just besure that that JDM R header for your engine package (you can probably get away with it since you're running the 404's which have comparable lift specs to the ITR vtec cam lobe).

 

honestly, i'd suggest other brands besides DC...

 

Get the 4-1 header. Maybe you can get a greddy header those are nice as well.

 

why so much emphasis on a header? I mean seriously between a stock header, a cheap ebay SSautochrome header or some $1000K+ JUN header...how much real power difference is there gonna be between one header to another?

I would have a real tough time believing anyone can actually "feel" the difference from one header to another

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silver b18b1 &raquo;</TD></TR><TR><TD CLASS="quote">for an LS and non-vtec integras you should get 4-1, for GSR get 4-2-1 </TD></TR></TABLE>

you can't say that. the 4-2-1 is for mid-range torque...which will be useful for autox, since on some tracks, there will be lots of shifting

 

I've been wondering the same thing for my 94 LS, its dropped 2.5" and I wouldn't want to risk anything either. So whatever this thread ends up with, I guess that'll help out my decisioning too.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by silver b18b1 &raquo;</TD></TR><TR><TD CLASS="quote">for an LS and non-vtec integras you should get 4-1, for GSR get 4-2-1 </TD></TR></TABLE>

actually its quite the opposite. LS's dont rev in teh high rpm realm to benefit from a 4-1. in fact, you will lose some low end, which is where the b18b's shine. GSR's can go eitherway dependng on where on the powerand the owner wants more "breathing" for the engine.

If you have an RS,LS go with a 4-2-1. I am using a greddy stainless steel one piece 4-2-1 in my LS. Just my opinion.

 

4-1 all the way

 

Yet another "what is the best header?" thread with people giving blind recommendations on what this guy should get with no regard to his engine package



You size the header to your engine package. Its not a universal best header type of thing.