Obviously they were focusing on something other than low EMP:IMP on my grunter extreme I had. It's pretty easy to work out what that was is too when you can achieve full boost at 1500rpm, the price for quickest boosting turbo most certainly goes to them! I thought it was fantastic at the time when I was unaware about side effects of EMP and began testing things. Once I discovered it was 3:1 EMP:IMP it didn't stay on long! On the plus side though it did survive nearly 5 years of absolutely flogging it and nothing broke or failed so I can't complain about that!
This is very interesting to me as lately I just installed a G Turbo Grunter set at 20psi on a 1hdt and I’m mostly happy until I started seeing all this back pressure talk that I had never previously heard about. 3:1 is quite a bit. I will be playing with some Borge Warner turbos in the future.