CAN ANYONE ADVISE ME ON THIS PROB,IT CAN OCCUR AT SPEEDS OF 40 RIGHT THRU TO 70!!!!IT IS ALMOST AS THO IT WAS A KANGAROO AFTER A SPLIT SECOND IT HAS GONE,AND THE CAR RETURNS TO NORMAL

MANY THANXS IN ANTICIPATION

ANDY

What is your boost gauge showing?

mine used to do that. on sidc faq it said about faulty dumpvalves and to higher oil level. i put a well lane ally one on and it has never done it again. worth a try, unless you already have one that is.

wayne

THANX I HAVE A DUMP VALVE IT HAD THE PROB BEFORE FITMENT LIKE WISE OIL DID IT BEFORE OIL CHANGE AND STILL DOES(AND ITS TOP OIL)