I put on the TST on my 600 with the 48re on level 3-3 before i can get to 60 mph it is reading 1390 and defueling. I have the AFE proguard 7 and Donaldson 4" straight thru exhaust. What else can i do so i can make a full run on a 1/4 mile with this thing. Boost never goes over 30 psi either. I am gonna clean my filter tonight. Thanks Kevin