Ok i when i hook up my wideband lc-1 and flatline 5v i get 4.637 and when i unhook the system ground i get 4.99 v.

Ive tried every possible way of hooking up the grounds and only all to the block except for the for system ground which i dont hook up at all gets me the proper voltage.

My alalog out puts went bad once so innovate sent me a new lc-1 and i don't
remember this problem before.

Customer support says the unit tests fine and i have the issue but it's hooked up the same way the old one was. By the way customer support says one of there engineers is going to call me and never did Wednsday,thursday,and friday. They have poor support.The first guy i talked to said just use the 1-3.5 voltage range. Whats the point of a wideband that you only use 50% of it's range.

Any ideas how to fix tis problem maybe ther is something im totaly missing.