Thanks for your reply. Air compressor is a 7 1/2 hp Ingersol Rand with an 80 gallon tankAssuming you have a standard 5hp or smaller compressor, this won't be a problem. The pump volume for these is ~15 CFM, which isn't that much.
You get higher volume air flow on the output side where restrictions can be more of an issue.
A cooler with 5/8 or larger O.D. tube would be best, many youtubers use that cooler, I myself bought a Derale cooler that has 1/2" tubes (.500"O.D.). I cut off their ends removed the power coating and silver soldered 1/2 HVAC type fittings to flow better (my compressor is 2HP and uses 1/2" tubing). Get the correct fittings from mcmaster or supplyhouse dot com . be aware 1/2 copper = .625 " O.D. in plumbing sizes. In HVAC, 1/2 copper = .500" O.D. actual, and Pipe dimensions refer to approximate inside dimensions, a bit confusing, so make sure you always know the actual dimension vs. the nominal. mcmaster will always show you dimensions in their product detail as to what you are getting. Go directly to derale or hayden websites and understand their coolers and tube or inlet sizes.I bought the Derale 15300 cooler some time ago and am getting fittings and copper bought to start the installation. I noticed that the flared cooler fitting is actually 3/8" id, The compressor line running from the pump to the tank is 1/2" id, 5/8" od. Will ther be issue with using the cooler with the smaller id. Sorry if this repeated, I could not find the long running thread (13 year) about after coolers. Moderator, it's ok to move