Do i need this to effectivly run my emanage ultimate?

GReddy e-manage Ultimate injector adapter #2 - #15901504* ONLY $25*
For 6 cylinders
When the e-manage ultimate is connected to increase or decrease fuel through the injector harness, the injectors will run too rich, use this harness to cure this problem.

 

Anyone?......................

 

yes if u want to control ur fuel,I think u might need diodes for safety or maybe not for emanage ultimate.

 

bump...i'm interested too. I have an emanage and various accessories for it on my floor but was wondering if that part would be needed too