Hello all. I'm newly registered here, but have been snooping around for awhile. I must say, this is the best gto forum/family out there. I be an old fart learned in the ancient art of mei goh fast kung fu. Give me the basics: early 60's thru early 70's Chrysler, GM or Ford big block, a massive 4bbl, a cam, a set of headers, a curve kit and a few crude hand tools, and I'm off to the races. But todays technology baffles me (or my unwillingness to accept change :gr_jest: ). Every thing is run by computer now (ECM/PCM..or whatever its called). Anyhoo, to my stupid question of the day. I hear of a lot of different mod's people are doing to their engines...but never hear anyone address the topic of fueling. Does the computer adjust the air/fuel mix after such mod's (i.e. cam, intake, heads etc.) or is modification or replacement of fuel injectors needed? Thanks much.