OK lets do some rough calculations:
-lets say it’s a 2.5L motor spinning at a redline of 6500 RPM.
-It’s a 4 stroke so it passes those 2.5L 3250 times per minute
-That works out to 8125 Liters/Min
-But wait, they’re claiming 6 psi! So lets apply the ideal gas law to our air/fuel mixture
-812520.7=X14.7
-X = 11,441 Standard Liters Per Minute of airflow, or 404 SCFM (404, isn’t that ironic? 404 gains not found.)
For comparison’s sake, a Toro Ultra Blower Vac 51598 leaf blower flows 385 CFM and requires 12A x 120V = 1440W. (Keep in mind this is an open-flow rating, at 6 PSI the power draw would be MUCH higher.)
http://www.consumersearch.com/www/lawn_and_garden/leaf-blowers/comparisonchart.html
-So we’ll linearly extrapolate to 404 SCFM. 385/404 = 1440/X
-X = 1511 Watts
1511W/14.4V = 104 amps
That’s with the blower at open flow. With pressure built up to 6 psi, you’re probably looking at double or triple the power draw. Think your alternator can push 300 Amps?
Roughly.