You have the stats in this thread in page 2, here they are. Soon we are going to work in the head pipes so we can reduce weight.
Hi again!
I received the results comparing the stock exhaust and the None. In the graphic you can see there is a 3HP gain comparing the stock (green line) and 5HP without the DBkillers (red). But more important, the power is more constant.
In this graphic is the stock (blue), the Akrapovich (red) and the None (green) without DBkillers.
The weight of the two bafflers and dual pipes are 5,9kg
Stock: 5,8kg
Akrapovich: 4,0 aprox.
Next week they are going to work with the header pipes. They are using a very thin stainless steel so they are pretty sure to reduce some weight and improve performance.