this question is focused toward B series engines.
here are the links to see what they offer.

http://www.theoldone.com/components/...g_and_Menu.htm

http://bisimoto.com/store/index.php?...&cPath=5_9_101

 

do more research on both.

in terms of work, they are both about the same.

as in don't really trust them.

endyn don't do their own work
and bisi parts are known to be cheap chinese parts

do your research.

 

ill do more research.
do you have any suggestions on where to get head work done?
also im not calling you a liar just curious what knowledge you have to make such statements on both ?

 

it's all over honda-tech.

i didn't believe it my self until people started posting some crazy *** finds.

like larry, didn't port his own heads. he had another machine shop do the work, and he claimed that he did all the work in house.

bisi header's are just mass produced chiniese reproductions.

issue with endyne
http://www.tamparacing.com/forums/ho...-problems.html

issue with bisi
https://honda-tech.com/forums/general-discussion-debate-40/bisimoto-reasearch-%3D-chinese-truth-3044634/

there are even post on bisi header's not doing a damn thing in power. like i said, do your research.

also, you live near la. pretty sure if you google it, you'll find really good machine shops

 

wrote a larger reply but idk what happend

so your endyn link read it and it was a lot about one event where somebody got screwed over a decade ago, and a lot of people that more than likely never possessed an endyn product, hopped on the ban wagon hating on endyn, but those having had endyn products had positive things to say

your bisi link had a lot to do about his headers specifically and not other products being shipped from overseas, but i dont think it stated exactly where and from what company that "mass produces" them. they must have a contract with bisi. sucks for competing companys and us who would love to sell and buy these bitchn headers. that do not provide any increase in horse power as was stated. although evidence was not provided to make such claims.and i just not youtubed this the guy doesnt say much so who knows cynics may want to say it was filmed in russia lol

 

just do your research. these two companies aren't what they used to be. take a lurk in the all motor forum and you'll see a lot of the bisi hate in there. no one really talks to much about endyne anymore.