do i have a throttle position sensor...the reason i ask is because i am planning on buying a ZEX WET NITROUS SYSTEM and it runs off of the TBS...i have a 97 dak with the 2.5L 4cyl

 

yes you do. its right in the tb ,round plug with 2/3 wires connected to it. as far as the nex. system. probably the best system out there for our trucks. but not to sure of the 2.5. they have a strong bottom end but not like the v/8 or even the v/6