I currently have a dc sports 4-2-1 on my si. Is it worth getting the vibrant 4-2-1 race 2.5in collector header with cat. Or is the money spent buying the header not worth it?

 

Did you see the Titan header test?

 

https://honda-tech.com/zerothread?id=699674

 

yea i saw that but i have the regular dc sports 2.25"? collector. So I know my header isn't close to the JDM DC.

 

yeah the titan is showing two completely different headers than he mentioned

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8krdline &raquo;</TD></TR><TR><TD CLASS="quote">yea i saw that but i have the regular dc sports 2.25"? collector. So I know my header isn't close to the JDM DC.</TD></TR></TABLE>

The "regular" DC sports header should only have a 2" collector, not 2.25", unless you were using the standard type R DC header which has a 2.25" collector.

In the Titan test, the JDM DC 4-1 header was one of the best bang for the buck headers. It clearly outperformed the Vibrant header, but then so did all the others. I know that Vibrant just imports their products/headers from overseas and was curious to find out if it's the same header as the Megan one people have been asking about on here and the one you always see on ebay. If it is, then everyone will know how it will perform.

 

get the jdm dc 4-1, best bang for you buck...if not go all out and get a race header

 

from what i have been told ... the vibrants have excellent quality. They actually use the 4-2-1 on their race car... it looks damn near identical to the jun 421

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by warwagon &raquo;</TD></TR><TR><TD CLASS="quote">from what i have been told ... the vibrants have excellent quality. They actually use the 4-2-1 on their race car... it looks damn near identical to the jun 421</TD></TR></TABLE>

Yep, they actually mentioned that in the great header test that the Vibrant header was one of the highest quality looking headers they had on hand for the test and wondered if it would perform as well as it looked. In the end it didn't. People and pics have shown the Megan header to be just as nice which is what leads me to believe that they might be the same header, under 2 different names.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">

Yep, they actually mentioned that in the great header test that the Vibrant header was one of the highest quality looking headers they had on hand for the test and wondered if it would perform as well as it looked. In the end it didn't. People and pics have shown the Megan header to be just as nice which is what leads me to believe that they might be the same header, under 2 different names.</TD></TR></TABLE>

how could the 2 peice megan (dc 4-2-1 copy) be the same as the Vibrant 4-2-1 1 peice w/2.5" collector (JUN copy)? save the talk, man. Vibrant owns the fsatest n/a car in Canada, and, they ran 11.70's with there 4-1 j spec, so, its all relative. how bad can the header be if it supported 240whp? lastly, the 4-2-1 isn't even the header that was tested. wake up, eh.........

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dstretch33 &raquo;</TD></TR><TR><TD CLASS="quote">get the jdm dc 4-1, best bang for you buck...if not go all out and get a race header </TD></TR></TABLE>

I'd like to get the jdm dc 4-1 but I'm worried about ground clearance. Plus I have a 99 Si so it will hang lower. I have to go over a bigass spedd bump 2 times a week to get into the school parking lot. I was thinking about the 4-2-1 2.5in vibrant race header so that I can atleast have good clearance.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16C1 &raquo;</TD></TR><TR><TD CLASS="quote">

how could the 2 peice megan (dc 4-2-1 copy) be the same as the Vibrant 4-2-1 1 peice w/2.5" collector (JUN copy)? save the talk, man. Vibrant owns the fsatest n/a car in Canada, and, they ran 11.70's with there 4-1 j spec, so, its all relative. how bad can the header be if it supported 240whp? lastly, the 4-2-1 isn't even the header that was tested. wake up, eh......... </TD></TR></TABLE>

I wasn't referring to the 4-2-1, I was talking about the 4-1 only. The point I was making was that even a header that looks very well constructed isn't guaranteed to perform. The fact is that Vibrant doesn't make any of their own products, they are a Canadian version of APC in the respect that they import these parts from Aisa and stick their name on them. I was questioning whether there was a possible connection between Megan and Vibrant products because of their physical similarities in appearance etc. I was not only responding to the original posters question but I was also attempting to expand on it as well, so I was more than awake...were you?

Vibrant may run that 4-1 J-spec header on their car but that doesn't mean it was the best header for that car. Looking at the Titan header test would suggest that there would have potentially better choices but that doesn't make for good advertising now does it...

 

From the sounds of it it will give you the ground clearance you'll need, but without any actual dyno results on that header, it's a shot in the dark as to how well it will perform.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8krdline &raquo;</TD></TR><TR><TD CLASS="quote">I currently have a dc sports 4-2-1 on my si. Is it worth getting the vibrant 4-2-1 race 2.5in collector header with cat. Or is the money spent buying the header not worth it?</TD></TR></TABLE>

Yo just go with the OEM JDM type-r 4-1 header, I just picked mine up for $382.00 shipped to my door. you should not have any clearence problems because im putting mine in my hatch, with 99 gsr.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">without any actual dyno results on that header, it's a shot in the dark as to how well it will perform.</TD></TR></TABLE>

yea, thats my problem. I just dont want something that will perform worse than the header I have now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 8krdline &raquo;</TD></TR><TR><TD CLASS="quote">

I'd like to get the jdm dc 4-1 but I'm worried about ground clearance. Plus I have a 99 Si so it will hang lower. I have to go over a bigass spedd bump 2 times a week to get into the school parking lot. I was thinking about the 4-2-1 2.5in vibrant race header so that I can atleast have good clearance.</TD></TR></TABLE>

Has anyone verified this information, or is it a H-T myth??
I will be installing this header this weekend to a 2.5 hi flow cat, and Hks Hi-power.
I'll post clearence results

 

If you're talking about the JDM DC 4-1 header having clearance issues, it's no H-T myth, it's probably one of the most well documented things on this site. Especially when it's put on a b16 which has a lower deck height than a b18 and causes it to hang even lower.

 

im curious about how the vibrant will run on a high compression motor
apparently they have some big primaries on them
I am about 12.7:1
the test from titan only shows how the header will perform on that specific motor setup
I can tell you that the OEM JDM ITR chokes my motor about 9k
unless someone does test it on higher compressions I would recommend taking Titans efforts as a base of reference as we all know
every motor is different

 

I totally agree whith what you're saying. It is entirely possible that the Vibrant header in their test may make more power on a more built engine. The only thing is that even though a header may not shine on an engine it's not well suited for, it will still usually show where it will want to make power. The Larger primaries would normally point to a header making power in the higher RPM range but the Titan test showed the Vibrant header making less power than the DC in the higher RPM's. Now, because both designs are very similar, it was felt that the Vibrant should have outperformed the DC in the higher RPM range specifically because of it's larger primaries. If it had of done this and made less power everywhere else, it would suggest that it would be happier on a larger displacement engine or one that has been significantly modified. Because It made less power overall compared to the DC 4-1, it would indicate for some reason (probably collector related) that the header wasn't as good performance wise, as the DC.

 

what are you babbling about? the Vibrant header tested was the 4-1. its has different specs from the 4-2-1. collector problem? yeah, you are right....the 2.5" collector was too small. listen, stop typing, already. every motor responds differently, and, there were a whole slew of other headers that weren't tested. does that mean that the one's that didn't participate are ****? leave it alone. first you speak of the Vibrant not being the best, which nobody stated. now, you protest to knowing exhaust scavenging principals? i know of a few people who have had nothing but good results with the 4-2-1 j spec, and, i know of a dude who made 9whp on his bone stock ITR with the 4-2-1. i am by no means pushing the product, but, i'm sick and tired of clowns speaking about **** that they have no experience with.

 

alright i know there would be a difference in power between the dc sports(non JDM) and the vibrant 4-2-1 j spec. But is buying the header for 360 or whatever actually worth it, powerwise, over my dc now. And no I dont want the jdm dc bc of clearance issues.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by B16C1 &raquo;</TD></TR><TR><TD CLASS="quote">what are you babbling about? the Vibrant header tested was the 4-1. its has different specs from the 4-2-1. collector problem? yeah, you are right....the 2.5" collector was too small. listen, stop typing, already. every motor responds differently, and, there were a whole slew of other headers that weren't tested. does that mean that the one's that didn't participate are ****? leave it alone. first you speak of the Vibrant not being the best, which nobody stated. now, you protest to knowing exhaust scavenging principals? i know of a few people who have had nothing but good results with the 4-2-1 j spec, and, i know of a dude who made 9whp on his bone stock ITR with the 4-2-1. i am by no means pushing the product, but, i'm sick and tired of clowns speaking about **** that they have no experience with.</TD></TR></TABLE>

Listen pal, it's obvious that your understanding of exhaust systems and how they work is limited at best, so untill you educate yourself about a great many things, don't even think about coming on here and calling me a clown because you have no idea what my background is.

First of all, we already know that the header tested in the Titan test and the Vibrant 4-2-1 are different headers, go back and re read through this thread so you'll understand how we came to be talking about the 4-1. As for the collector problem I was referring to, it had nothing to do with the size being 2.5", it was about the way it was constructed internally that I felt may be responsible for the poor performance. If you knew anything about exhaust systems you'd know that a collector's design (how the pipes merge together) has a lot to do with the ability of a header to make power and overall size is only one part of the equation.

I also never made any comments about headers that weren't tested so why are you asking me if I think they are all ****?? As for your personal experience of knowing people that owned the J-spec 4-2-1 that had good results with it, well I'm happy for you.....here's my imput on that header:

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 00Red_SiR &raquo;</TD></TR><TR><TD CLASS="quote">From the sounds of it it will give you the ground clearance you'll need, but without any actual dyno results on that header, it's a shot in the dark as to how well it will perform.</TD></TR></TABLE>

I never bashed that header at all nor did I make up some sort of phoney experience with it. I merely stated all the facts I knew about their products and their 4-1 header and left it open for someone else to contribute information. If you had of posted your specific experiences with that header instead of trying to become some sort of H-T hero by bashing me, this thread would have been a lot shorter, everyone would have the information they were looking for and would all been a lot happier.

 

to be honest, i don't give a **** about what you know, but it can't be much seeing that your dc header has the best collector in the world. once again, you are rambling on. i'm not trying to be an H-T hero, i'm just trying to help. you, on the other hand know nothing about the header, yet you claim to be a mountain of information. this is becoming tired, almost like your come back's. WTF does collector formation have to do with a 4-2-1 header (remember, we aren't talking about the 4-1)? ooops, i forgot, you know so much. LOL. get over it, man. why am i arguing with a person who lists ngk plugs and s2 shifter **** in his list of mods? all i am saying is you have no experience with the header, so you can't talk. where, i have a good amount of experience with it. yeah, the dc jdm makes good power, but, it sits on the road, is poorly constructed (flanges) and its ceramic . this is where the Vibrant wipes its *** with a dc.

 

After reading through a series of threads related to the Jdm Dc sports header, I've come to find that the hanging low(getting scraped and dented) only applies to super low cars, 92-95 civics w/b16's, and people that go over speed bumps, and really harsh roads everyday.
After viewing the damage that occurs to the header, your only going to be safe if you have a skid plate. Most of the 4-1 headers hang low, but not enough that a cautious driver could avoid damaging.

 

I'm not real low but the speed bump that is at my school is pretty big. Thats the only thing that is preventing me from the dc jdm header. I dont want to spend the money on the 4-1 and bang it up if I can just get the vibrant 4-2-1 j spec and get good gains also.