re: YAOTMT - help with getting a keyed lug off a tire

Air fittings will limit your psi flow. I can't remember the exact amount but I want to say a 3/8 hose with 1/4 npt air fitting will reduce psi by I think 20 psi per fitting

Air impact tools produce their rated torque at 90 PSI pressure. That means 90 PSI at the gun input while it's running.
Here is an example:
Low flow 1/4" style coupler at the compressor connected to a 50 foot long 3/8" hose terminated at another M style coupler to the impact.
In order to obtain the guns rated torque at 90 PSI you need to overcome the system pressure drop which is likely to be 35-40 PSI per coupler plus 25-30 PSI for the hose plus the regulator droop.

That was from a quick Google search but you're probably not getting the full 90 psi at the impact.

All else fails breaker bar and a 4ft piece of pipe for a cheater bar.