THEIR is a provision for lines to go tho the throttle body to prevent icing in very cold weather.  I live in NJ and I have not had any problems at all with out them hooked up.

Dan

Kim Brennan <kimbrennan@MAC.COM> wrote:

>Okay, so I was talking with the shop manager at place that recently
>replaced my fuel lines (on my Tiico conversion).
>
>and he noticed that there were no hoses connected up to a couple of
>tubes on the housing for the fuel system.
>
>According to him (as near as I can recall) this was a heater for the
>fuel injectors, and there should be a couple of lines from the coolant
>system. Without them the engine will run rough when cold (as the engine
>was idling and warmed up enough it got smooth, to "confirm" his point.)
>
>I just looked at the pictures on the Tiico page and even there those
>lines aren't hooked up.
>
>Any comments from folks that would know better?
>