Hello i am having some problems with the fass ddrp at idle warmed up it idles at 20 psi. Whenever it seems to get to 20 psi my truck makes a little missing sound at idle. what does this mean am i having to much fuel pressure and its making it miss a little?

 

That pressure is perfect, I've been running 28 at idle with no starting problems or idle problems. Some people freak out when you tell them you run 20psi or in my case 28, but so far I am 2 years and counting. Hope you figure it out. I just saw your sig. says your at 10-11psi at WOT. That is terrible, hopefully that is the cheaper Fass. I run about 18 WOT with my "el cheapo" home made setup.

 

but why at 20 psi my truck starts making a little miss?

 

I don't know, it is usually the other way atound. They normally miss up top. Your not talking about it "loping"
Are you?

 

no im talking about it misses at idle at 20 psi of fuel pressure