Air efficiency: new vs. old A.I.R.?

[kevine]

I have two Angel AIR's, one's the newer version (raised area by the output screw), and an older version (output screw is flush with reg).

I seem to get better efficiency out of the newer reg. Is this to be expected? Or would the older reg do better if it was completely rebuilt?

[thog94]

If both AIR's were cleaned and calibrated properly, they should work the same. I would recommend a cleaning or rebuild, and calibration and you should be good to go.

[Crazy Train]

I thought the newer generation was designed just to get slightly better/reliable airflow...efficiency should be roughly the same.

[thog94]

I've never had any issues with either reg that I've had. They both performed the same for me.

[kevine]

Thanks for the info. I think I'll have them both re-built at the same time, then do a test with the same marker...maybe post my results!