my quad rail gauge is so erratic sometimes and then for a few days it isnt. im pretty sure the pressure sender was made in a sweat shop somewhere offcoast. anyways could i use any1 like the 1 on this link?http://www.sw-performance.com/products/SDRPress

 

Doesn't your QUADZILLA gauge plug right into the rail? The pod of my X2 does.
There is no sender, rail pressure is never constant or steady, even analog gauges bounce around.

 

the quad rail psi set up piggybacks onto the factory plug to the factory sender. it WILL not be a steady psi reading as the FCA is CONSTANTLY making adjustments. sit there at an idle and watch it, turn the a/c on and watch the pressure raise. BARLEY tap the throttle and watch it JUMP. it is normal there dude.

 

sorry. i have the rail gauge but i mean lift pump pressure

 

no i dont think you can use any sender,i had the same problem and i got the upgraded transducer and i had to send in my commander to be modified to work with it.

 

If you find on that is 0-40 psi, 240-33.5Ohm you should be in business.

You can try to find a Datcon brand like the one that came with the first generation RPG, but the ones I've found were running $75-$125.

 

I think you should check your fuel pressure with a mechanical gauge before assuming the quad gauge is srewed.

 

i have a new fass. im sure its not the fass

 

We know all about your FASS, you started about 6 threads on the problematic install, I'd still check the pressure with another gauge.

 

can you drive our trucks with 0 psi on the lift pump side? will i doubt it and thats what it reads. 0-1 psi around town and 16-18 psi on highway

 

lol lmfao i doubt it.

 

also in the 6 threads it states that i had the fass fixed for free. they installed the 1/2" draw straw. the only thing is the return still dumps into my fill spout. that should be fine because the 1/2 draw straw isnt sucking out of the stock canister anymore. my fass sounds normal (no dying out or cavitation/leaks) all the time. i can and will get a gauge somewhere and t in the line and read psi but really it has to be the sender. the quad lp gauge readout itself wouldnt be the problem