Whats the factory Fuel pressure on my 2000 5.3? Im tryin to figure out what Jets (fuel and Nitrous) to get for a 75 shot and a 100 shot (Wet). But i have no idea what the PSI is on these trucks.
Thanks!

 

I think stock idle is around 50 psi and WOT is 58

 

Thanks Thunder!

Does these numbers sound right guys??

here is what i found:

58PSI Fuel Pressure + 900PSI Nitrous + .030" Nitrous Jet + .015" Fuel Jet = 41hp

58PSI Fuel Pressure + 900PSI Nitrous + .035" Nitrous Jet + .018" Fuel Jet = 55hp

58PSI Fuel Pressure + 900PSI Nitrous + .040" Nitrous Jet + .021" Fuel Jet = 72hp

58PSI Fuel Pressure + 900PSI Nitrous + .045" Nitrous Jet + .023" Fuel Jet = 92hp

58PSI Fuel Pressure + 900PSI Nitrous + .050" Nitrous Jet + .026" Fuel Jet = 112hp

58PSI Fuel Pressure + 900PSI Nitrous + .055" Nitrous Jet + .028" Fuel Jet = 136hp

58PSI Fuel Pressure + 900PSI Nitrous + .060" Nitrous Jet + .031" Fuel Jet = 162hp

 

what is the deal with these pills? i hear more and more about them and i am utterly clueless when they are mentioned. all i know is some come with certain rpms and stuff. i throw a guess does it play with timing through a certain rpm only or engage nos through that range??

 

Pills, as they are commonly referred to, are the jets that are used to allow the desired amount of nitrous and fuel into your engine. The bigger the "pill" the bigger the amount of nitrous and/or fuel goes into your engine.

 

the pills I am refering to are the little red ones that I take before I go out. They really dont make my truck faster but it does seem much faster

 

I keep my pills in a little film container in the glove box... I already lost the 75hp N20 jet... oh well, I guess its 100 on up from now on. I have the 125's in there now

 

ok i understand what about those white rpm pills that you see with the msd ignition stuff

 

OH THOSE PILLS!! MSD pills set the revlimiter to a certan RPM. you throw in a 6000 pill and you can only rev to 6k or you can have it throw on your shift light at 6k

 

Based on the calculations he provided, I would say they are jets and not the rpm pills.