One of the good things about your series is the factory installed the power Valve blow out protection. I have one of the older units that does not have this and have had to replace a number of power valves from the initial startup and tune.
The one on my car now I think it a -10.
Pat is right, there are little things like what I added, but bascially they are about the same.
Just my $0.02 worth.
