Air injectors making a noise>
I have just fitted some new air injectors to my car and on tick over they seem to be making a ticking noise. They are the 2 injector type and one of them seems to be actuating the solenoid 2 to 3 times a second on tickover. Also as this is a rally car i use different chips in the ecu because i have to run a restrictor on the turbo. Unrestricted chip is when i get the air injector noise but when i swap to the restricted chip ther is no noise.
Is this right. Any Help.