Quote:
Originally Posted by Dezoris
Does not matter if the car is supercharged or NA, if the tuner uses aggressive VVT maps to eliminate torque dip certain cars will exhibit this valve-train noise.
Tuners like Perrin and Vishnu and others who have extensive knowledge claim it's likely resonance from the VVT angle change.
But there is no proof mechanically one way or another if its good or bad.
For me, everyone who hears the car says it sounds bad including those who have mechanical backgrounds. My choice was to have the aggressive VVT map stripped out of the tune for now and it is now quiet again.
I'd rather not risk it one way or another.
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Dezoris is the reduction is mid torque enough for you to consider trying an innovate or are you sticking by your guns?