i put a skunk 2 mani on my 2000 si, when i start it up it idles at 2 and then when it warms up it starts constantly reving up and down at idle i was gettin a check engine then i put in a type r ecu and it was ok and then later on when i started it again it the check engine came on and and it started sputterin and no throttle response my friend switched 2 vacuum lines and the sputterin stopped and the check engine went away but now its back and it still revs up and down.with the type r ecu it throws a 71 code and with the si ecu it throws a 7 so i have NO idea what is going on someone PLEASE help

 

you need to make sure the throttle posistion sensor has right voltage and check lines again and again!!

 

if it warms up and then you have the hunting idle, its the fast idle thermal valve, it just needs to be adjusted