I just swaped a b16a2 into my 97 hatch..it runs amazing except for when the motor is warm and im idling, the rmps go up to 2000 then drops to 1000 and contiunes until i start driving? anyone know why? My mechanic said he will have to bleed the radiator? that make any sence?
Jebus

 

i had a map prob that caused something similar at idle it ramped up and down in the same range a week later my cat was clogged exploded and shot the packing into a car behind me

 

I left my stop exahust on but to fit on the cat had to come off...
my car is total sleeper...pencil dick exahust but SIR under the hood...
no annoying exahust sound or cops busting my *****