Quote:

and pump more air into the cylinder heads with those darn A.I.s, causing of course a higher temperature running engine and a quicker and more extensive blueing to those who don't immediately pull those things off their newly purchased Bonnies and Speedies?!



I know I should probably look for a thread already on this, but what are the A.I.'s? (I'm a newby...)

1965 Harley rigid Chopper Perth, Western Australia