i got a problem with the engine revin up and down when its cold.....

- spoon chipped p75 - ran normal but feels like it doesn't throw out the whole load of power and seems like it doesn't have enough air running to the motor, it shakes sometimes..

- stock p75 - runs with stock level power but when its cold it revs up and down..

is something wrong??? i know there is but what is it. ive heard it can be the throttle body or gasket but if anyone can help me out with this problem.. i'll be greatfull..

thanks

 

it could be your tps make sure its adjusted right. loosen the screws that hold it onto the throttle body and move it, read it with a volt meter i think its something like 1V when closed and 4 volts when WOT im not sure of the numbers look for them on the forums