I was thinking of using the defi bf series gages that you can chain togather. I was just wondering if there would be much of a problem using them with the haltech e6k on an fc?

the haltech cares not! they are indenpendent

I use both and as mike pointed out they are totally seperate.

ok cool. so the defi link control unit has its own sensors? forgive I have not read as much as I should have on these. http://store5.yimg.com/I/machv_1789_76781187