[BMW_388]

There is already a thread on these stacks. The best you can say is your results will vary. Some see 3HP gains, some see 3HP lost.

The experience I had with stacks on the GSXR's was again varied. I had every length of stack offered for the GSXR. The tuning is so critical to the temp and humidity and then you add the stack reaction to the fueling you are looking for trouble in results.

IMO, it is called an upsell when you merely asked for a tune refresh and you are offered more smoke at a price.

 

[BMW_388]

Iv never had a dyno ruin a tire. Very odd. Also unless your over 205hp at tire you can use a pcv on single row of injectors. Then you add a module to use second row.

If you do not strap the bike down on the dyno wheel properly, it can move back and forth enough to hit the edge of the dyno wheel guards. Then if the dyno operator constantly hits the Dyno Brake to stop the rear tire, it can lead to over heating of the tire and cause the blisters.