... do they make a dual fp gauge like the egt and boost in electric?
SPA has just released a dual "pressure-pressure" guage that would be sweet, but there are two issues - 1) already on back-order, vendors can't promise when I'd have one in hand 2) Cost over 300 clams.
Someone told me about Dakota Digital, and I bought from them.
http://www.dakotadigital.com/
Cons:
1) Not a "dual guage" - just one readout per dial
2) Came with just the guage and sending unit - I'll have to go find wires, switches, fuse, hose, and fittings. (Not a big deal, especially if you're having someone else do the install. )
3) Does not have the "external" alarm outputs that the SPA has.
Pros:
1) Looks to be high quality
2) Has adjustable alarm setpoints, similar to SPA
3) Also available in a rectangular version if you don't want classic round
4) For fuel pressure, you could monitor downstream of filter, then buy a second sender and wire a switch. This would allow you to set your alarms based on pressure downstream of filter, then switch over to "upstream" pressure whenever an alarm came in to diagnose whether it was a clogged filter or bad pump. This would only add $30 in parts.
5) Cost of gauge plus one sender <$100, gauge plus two senders still under $125
P. S. - I absolutely love my dual SPA; this post is not intended to be negative towards SPA, I'm just saying that those who are looking for a less expensive alternative should consider the Dakota Digital.