shouldn't be.

 

make sure you use 2 relays

 

You can do that, but it won't be as fast as if they had their own ports.

 

what? why not? its not like the compressors are that fast... runnning 2 comps off one filter / dryer will be just fine.

 

Q: Is there a way to increase the flow rate of my compressors, and improve my compressors' performance as well?
A: When using an onboard air system with multiple compressors such as P/N 38002, always plumb each compressors's leader hose to separate tank port. Doing so will increase flow rate by up to 20%, which will also increase your system's level of performance.

It's from the Viair site. And I'm not sure, but I thought DJD did a test on this once also.

 

a 1/4" id pipe should flow over 10 CFM (depending on all of the factors). So, unless you're running two oasis compressors, you should be perfectly fine.

 

I got it in, it is quick, I am happy! yay.. howcome one of my compressors say Viair and the other says Airlift? They are both 380s...just kinda weird, just noticed...

 

one came from airlift, one came from a viair supplier. just different stickers, thats all

 

Just remember, VIAIR handles its own warranties, just like Air Lift. We do not handle their warranty work if applicable!

 

Ok this might be a stupid noob question, but I will ask it anyways. I didn't get to read this before I left. I have placed both compressors on the same relay. The 380s are only rated at like 16 amps, and the relay is a 40amp relay, so couldn't I just run both on the single relay? I actually just remembered that I didnt' replace the 30 amp fuse, so I am still running that and it has not popped. I have another relay if I need to change it, that is not a problem. When I saw the relay, I just figured it would be fine.

And something else, is it just me is or 2 pumps not much louder than one pump..it seems like they buzz in unison, and they don't seem that loud! lol This might be the crack kicking in though. Thanks again for yalls help.

 

You may be able to get away with the single relay. If you start popping the 30 amp fuse though, I would look into adding the 2nd relay and increasing the fuse size (pending on the wire size) . What size wire are you running and how long of a run is it?

 

I am running 4g from front battery, to rear underneath. I have some extra wire I could cut out if that would help out.

 

It fills from 100 to 150 in just a nut hair more than a minute. It seems to work well. I wanted to run both compressors into a T so I could use one watertrap. It is one of the Parker pulsedrain watertraps, so I hope it works well and I don't have to empty 2 compressors worth of water ever week, lol.

I appreciate everyones help, this forum is friggen awesome!

 

There may be a slight increase in performance because of pulses, but if the check valves are in good shape, then you should be fine.

As far as the wiring goes. 4 ga is great for 2 380's. The only thing I would consider is if, and only if, you do start popping fuses, upgrade the fuse to 60 amps, then split the line off to a pair of relays and then fuse those links at 30 amps. You'd be good with a couple 480s at that point. You can run 8 ga after the split as well.