as the title states, i have a b18a1 in my newly acquired 89 si and i want to get some power outta this bad boy,
i was wondering:
1: what would be a good brand im leaning towards DC (pricewise)
2: 4-2-1 or 4-1
3: if a 4-2-1 should it be 1 or 2 piece
4: what car should i buy the header for (for the fitment)

thanks

 

come on someone has to know

 

ttt
why is it that anyone who posts "HELP HELP swap gone wrong!!! HELP HELP", they get all the attention?

 

just get the DC 4-2-1, its cheap and decent. IF your not going for a super if N/A setup it will work just fine. IMO 4-1 headers arent as good for a b18a as they are more for high RPM power, which a b18a cant take advantage of. 4-2-1 is more midrange/low end, where the b18a shines

 

ok but what application should i get this for?

 

for the b18... you will probably also need to modify the exhaust to meet up to the downpipe.

 

no man thats not what i mean, i mean what car. cuase dc makes it for all different types of cars and i wanted to know what type of car i should order the header for. sorry for the miscommunication

 

order it for a integra. Most B-series are the same, to be specific, you need a header for a 90-93 integra LS or GS

 

related question:

when you put on a header like this, you no longer use heat shields, correct? Wouldn't this be bad for the radiator fan, a/c plumbing, etc.? My b18's stock exhaust manifold sits so close to the condensor fan, you can barely fit a pinky in there. Is a DC 4-2-1 shaped differently to not be so close to these components? does it dissipate heat differently/more efficiently?

 

Ill sell you mine brand new never been used before DC 4-1 header for $300. Pm me if interested

 

Get a header for a 90-91 integra..I would get megan racing over dc sport personally ,,cheaper and better(imo)..Go with the 4-2-1 if you want low-mid rpm gains,,go with the 4-1 if you want mid-high rpm gains..Also ground clearance is better with the 4-2-1 header

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by saaron34 &raquo;</TD></TR><TR><TD CLASS="quote">related question:

when you put on a header like this, you no longer use heat shields, correct? Wouldn't this be bad for the radiator fan, a/c plumbing, etc.? My b18's stock exhaust manifold sits so close to the condensor fan, you can barely fit a pinky in there. Is a DC 4-2-1 shaped differently to not be so close to these components? does it dissipate heat differently/more efficiently?

</TD></TR></TABLE>

Dont worry, clearances will be fine, the heat wont cause a problem.

 

Anyone run a megan racing 4-2-1 with the hasport a/c mounting bracket a/c setup?

 

i have a dc 4-2-1 brand new still in the box, ill let it go for $200

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hbyrd8701 &raquo;</TD></TR><TR><TD CLASS="quote">i have a dc 4-2-1 brand new still in the box, ill let it go for $200</TD></TR></TABLE>
stop hawking it

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mr.speaker &raquo;</TD></TR><TR><TD CLASS="quote">Get a header for a 90-91 integra..I would get megan racing over dc sport personally ,,cheaper and better(imo)..Go with the 4-2-1 if you want low-mid rpm gains,,go with the 4-1 if you want mid-high rpm gains..Also ground clearance is better with the 4-2-1 header</TD></TR></TABLE>
DC is bad I would agree bottom line though :both those headers do nothing.
You can make a ton more power off a 4-1 mid range if its setup right.

I'm more and more an elitest about headers more I research them.

You are correct mostly about the gernalazations but a well made header can be 4-1 or 4-2-1 and be great for whole band.

The "worst" header I'd put on my car is a Spark racing. I have a DC now it does nothing poor fit and bangs non stop. Did nothing over the OEM gsr exhaust mani I was running dnyo backs that, with a semi built motor.

If you really want to go N/A spark racing Bisimotor RMF etc. Comptech Greddy do make a tiny bit of power and pick up under the curve a fair amount. but really do you want to gain 3 peak for 400 or 10 for 500?

Thats your call.

Just my .02

 

the reason that im selling my header, is that im going to be boosting in a month or two, now i think $200 for my headers is a reasoning price.... still in the box.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by hbyrd8701 &raquo;</TD></TR><TR><TD CLASS="quote">the reason that im selling my header, is that im going to be boosting in a month or two, now i think $200 for my headers is a reasoning price.... still in the box.</TD></TR></TABLE>
Thats great try for sale

 

I have a used megan 4-2-1 header from my b18a in my da and im parting everything out. I'm letting it go for 120shipped. LET ME KNOW!!!!!

 

em2ssm02: Try a little patience...3 posts in an hour, c'mon.

B18a_CRX: The 90-91, 92-93 and 94-01 are all different. As are the GS-R and LS. Quit passing on bad generalized info.

I ended up getting a 90-91 B18a header. It was 2" too long at the bottom and the bolt holes were not aligned the same way as my CRX cat.
So I did this:


Works fine but it would be easier if someone knew if here was a bolt on version.

 

what you should do is get a 92-93 header because it is 2 inches shorter compared to the 90-91 header.