Quote:
Originally Posted by harkes
My experience with the above bolt-ons is that they dont offer any performance gains (they might with a tune)
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Harkes,
Agreed, bolt-ons do work best with a tune. Its an expensive way of making more of a din otherwise !!
On the same day, my car went from crank power / torque of 320/330 to 380/450 just with JB4 custom mapped on a rolling road after having sports cat DP fitted.
Chaddy - based on my gains above - I was surprised by the torque increase on an already torquey motor.
PD.