Quote:
Originally Posted by vitesse
While it is true that a lot of KV6s will have non-functioning VIS motors, it is by no means desirable. I offer a free checking service and generally find most owners will have one defective VIS (usually the balance), if unlucky sometimes both. However, functioning VIS motors make a lot of improvement to the engine, one defective motor is often not noticed, but owners who have replaced both motors generally report a noticeable improvement in performance, this is especially true of the weaker 2.0 engine.
Stocktake who has kindly answered your questions also provides a VIS renovation service. His renovated units incorporate many improvements over the original design and will probably outlive your car.
Regards
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True. My car is a 2.0 and had both vis motors broken. I managed to fix the balance one and the improvement was substantial. I don't intend to leave it like this but i don't want to get stucked on this issue. Since the engine works fine, i can fix the rest of the problems, register the car , and then check the power vis again.