Head porting books.

Just keep in mind it’s an air pump. Air in air out.
"You have to be able to see the air, can you... lol"
LOL

Have you seen them smoke machines that the dealer us to find EVAP leaks?
When i us to work at the chry dealership, i alway wanted to take that machine home and us it on my flow bench(I actually did once...)

For those that don't know what this is, it a smoke machine that seals to your fuel tank neck. Were ever the fuel vapors are leaking it leave a trace of dye behind that you can see with a black light.