I've ran SLP, SSI Mod and Bikeman. All picked up a few hundred RPM's.
I bought the first generation SLP and it cracked, it is the lightest I ended up getting rid of it.
Bikeman pipe weighs in at about the same as stock, runs well and I feel holds the heat in well.
I have the SSI mod pipe and it is more prone to DET than the BMP or the SLP.
Running a Dynojet Fuel Controller. MDS weights.
Currently running the BMP pipe, I added their Hi-Alt head and playing with maps. Started out with an intermittent mid range DET, added fuel in that range and it is gone.
Yesterday was very hard powder (Belt blowing powder!) and it did DET twice at WOT. Added a couple numbers up top and that should do it.
Running pump gas 91 in the non-eth mode...above 9000 ft.
Adding the head and adjusting the TPS setting with the fuel controller has made the sled idle and run better than it ever did before. Power is super crisp. Gong to add the Durability kit pistons this summer and if I have an extra $700 burning a hole in my pocket may buy the Bullydog Tuner.