ok i jusst got done doing my 5spd swap and installing my nitrous kit on my 94 2.2 cavy and i was hooking up my tach and theres the tach signal wire and in the manual that came with the tach it says to run the wire to the ecm to slot b11 or somthing like that and i cant find any slot like that if anyones done this and can help me out it would make my day thanks

Theres three connectors on the ECM. Look at the pinouts on the center connector. Find the one that says B11. Thats the wire you want.

BTW- what tach did you buy that came with those directions? Thats pretty specific.

will that read out the actual rpm's or only 1/2

That reads the actual RPM. Connecting to the ICM will only give you half.

what rpm should my 2.0 5speed be puttin out? my tac says that my limiter is at 3500rpm while driving

i bought a sunpro 3 1/2 in from autozone and i looked at the 3 connectors and cant tell which ones the b connector