Well I got the Pyro and boost and im getting the fuel pressure gauge installed next week, the only thing im worried about is that it is going to be a 0-100 psi eletrical gauge. Has anyone had good or bad luck with these?

 

A 100 psi guage wouldn't be a best choice as our normal pressure is ~15 psi.
It will be too low on the scale to accurately tell what's going on.

A 30 psi guage is what most are using.

 

The good news is you are putting a FP guage in! 0-30 is prefered.

 

I use a 15 psi gauge with excellent results....the gauge will peg at 17.5 psi (just off the scale) but I NEVER have fuel pressure past 15 psi (I just run the stock LP). I like the 15 psi scale because it is very accurate and quick to read in the range I care about......I have no plans to have a FASS or anything like that (the Smartfuel does just fine for me) so, IMO, the 15 psi gauge is best for me.