to all of you that have done this mod, what did you have to buy to make it work? i plan on buying a dc 4-2-1 header and take it to a muffler shop and have the header modded. will i have to pay for more than the header and the muffler shop bill? will my stock cat work or will i need a high flow aftermarket one? sorry for all the noobish questions but searching was not working for me all the threads were the same and none asked these questions that i read. thanks for your time.

 

This thread should shed some light.

https://honda-tech.com/zerothread?id=218304

I would get a hi-flow cat also.

You can do the collector mod yourself if you have a welder. If not, the shop can do it. It shouldn't cost that much.

 

I think the more logical way is to buy a cheaper header off ebay for 120, same dc design..and make sure the out is 2.5 inches, then get the high-flow cat on kteller for 155, and for about 250-300 youll a full 2.5 back exhaust and i can only hope youd get 5 hp?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by damonk &raquo;</TD></TR><TR><TD CLASS="quote">I think the more logical way is to buy a cheaper header off ebay for 120 </TD></TR></TABLE>

would the weapon-r work? should i get ceramic? (because of the collector mod)

 

i got a $90 megan ceramic header hi-flow cat and magnaflow resinator its sounds great as far as gains i can tell it has alittle more umph but i have never dynoed my car only when it was stock and auto

heres a pic of the mod the muffler place said this was the first time anyone ever asked for something like that

 

whoa now. am i looking at this picture right? did you just cut the collector right off!? it looks like the downpipe is going from 2 pipes merged right into a wide *** flex pipe.

 

not as pretty as the guy who made this one but the same thing 2.5'' pipe from collector to muffler

 

edit sorry

 

so it aint pretty but it works i only paid 100 bucks to get it done

edit: sorry for what?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by raylude &raquo;</TD></TR><TR><TD CLASS="quote">so it aint pretty but it works i only paid 100 bucks to get it done

u proved looks dont matter. i quess. sence it works. i like it.
edit: sorry for what?</TD></TR></TABLE>


u posted the pic that i 1st comented about, no point in asking about the pic after u posted it..so the coment was deleted.

 

um ok

 

why not get a 120 header already with a 2.5 out pipe? makes more sense than getting an already shitty header, then modding it. or do the 2.5 out headers not as good as modding it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by damonk &raquo;</TD></TR><TR><TD CLASS="quote">I think the more logical way is to buy a cheaper header off ebay for 120, same dc design..and make sure the out is 2.5 inches, then get the high-flow cat on kteller for 155, and for about 250-300 youll a full 2.5 back exhaust and i can only hope youd get 5 hp? </TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by damonk &raquo;</TD></TR><TR><TD CLASS="quote">why not get a 120 header already with a 2.5 out pipe? makes more sense than getting an already shitty header, then modding it. or do the 2.5 out headers not as good as modding it?</TD></TR></TABLE>

Can you find a header on ebay this actually has a 2.5 inch collector for $120?? Many of the ebay headers say "2.5 inch collector", but have been 2.0" when measured by people on h-t.

 

yeah i couldnt find a real 2.5 one for 120 i had never planed to do the mod i had the header for a while then i read the 1st collector mod thread and at that time my n1 cat back ripped apart on me so i when and did the mod and custom exhaust

 

Well you can email the seller, and ask them to measure it for sure or something or another, i might do that, and if they do send you a 2.0 collector, then you get your money back. I think im going to try that because i cant find a used rage, mugen or smsp dont for get hytech

 

Pretty much all the ebay headers are just DC copies, so I would be very suprised if you find one with a true 2.5in collector.

 

theyre lying when they say 2.5 and its not, thats false advertisement, i mean im sure all of them areant lying.

 

i have the greddy sp2 system...its 2.25"..i have a dc header...the collector is 2.0" would there even be any point in me moding the collector .5" if im not 2.5 all the way back?

 

yeah mine was 2.0 so i did it. it may not be worth doin for .5''

 

i think your right.

 

so are you goin to go for 2.5 all the way after the collector or just keep it all 2.25

 

just keep it..i just bought the exhuast system it's gredddy sp2. i like how it sounds..not loud and ricey.