I'd say the truck picked up about 15 hp just from the fuel system. I can't get the fuel pressure below 19 psi though do guys think it's making that much pressure on the 3/8 return line and is that to much for the untouched front seal?
Installed the edm's this morning

So hear are some questions. First I'd say the power is real close to 400 say between 380-410. It doesnt pop or crackle at all in the higher rpms say 3200 but it starts defueling at about 2900. The gov. spring and timing are stock. I'm going to install the spring but what rpm is considered safe with out 60lb springs? Timing is another issue, first I'm already flirting with head gasket failure and I love the torque this thing is making. How far should I jump the timing.
Then we come to the nitrous kit I bought. I'm assuming this will make the head gasket go in a hurry but what does it do for egts, the same or less is fine but I don't want any more. The kit is just a -3 line to the NOS 1602 solenoid with 1/8 copper tubing to a 1/8npt fitting. I figure with no jet it's probobly good for 100 maybe 125 hp shot witch I have the fuel for but what do you guys think about the head gasket and turbo problems.
Turbo is a 62/65 .80ar s300
TIA
sorry for the long post but it should get some good descussions going.