When I had it mapped to stage 1 I was a bit underwhelmed, especially when it was supposedly making 436hp and 386lbft. This pulley and tune was done at a different garage and you can see by the graph that it was quite a way down on the above figures on this rolling road. I've had loads of cars mapped over the years and I always say it's how it drives, the numbers are not irrelevant but not as important as how it drives. With the pulley on the car seems to pick up and go with a greater sense of urgency, it also feels like its still pulling hard right up at the top of the rev range. I was also thinking of the clutch when getting this done, so the torque figure is nothing to write home about but it's enough of a gain to feel it and hopefully keep some longevity.
