JUST FITTED A FRONT MOUNT TO MY 99 CLASSIC BUT IM GETTING A LOT OF CONTINUOUS CHATTER FROM THE AIR FILTER BUT WHILE THE CAR IS MOVING IF YOU HOLD THE REVS TO A CRUISE POINT THE CAR KANGAROOS TO THE CHATTER ANYBODY GOT ANY IDEAS ON WHAT THIS COULD BE AND HOW TO SOLUVE IT

 

Could be fuel or injector related hence the kangarooing and stop shouting mate.

 

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It is the dump valve not dumping the larger volume of air quickly enough. This air then backs up and goes back through the maf which confuses it. The ECU then adds more fuel etc. Refit the standard dump valve which should cure it.

 

cant fit standard dump valve as now running front mount plus went and brought a brand new one from g goode and was the same whith that