hey there guys. any of you out there that had problems with the ATI charger running really rich and taking alot of tuning to get right and putting out alot of black smoke. a local dyno shop here in saint louis said that the ATI was a pain in the @ss to tune and get right and they liked the Vortech setup for the LS1's. now this was a Mustang dyno shop so that's why i ask you. my friend just dynoed today. 01' Z28 M6 stock 289rwhp/315rwtq. good #'s? thanks

randy
00' SS M6