I bought an actron Fuel Pressure guage with the schrader valve adapter. My question is where have you guys installed this and did you leave the adapter in place? The instructions say to install it by the fuel filter, then remove it from the line when done. I thought I had read where people had installed the on the inlet to the TB and left it there for years w/o problem. Whats the concensus? Installing it by the TB would be more convenient it seems.