Hey I'm Ari and i just bought my 05 cobalt ss/sc about 3 months ago and have pretty much just been driving the thing and having fun. Im an auto machanic that works also in a speed shop with access to a dyno so of course i had to find out what she made haha. nothing crazy done to it just headers 3" exhaust, CAI, 3" pulley no tune or anything. it made 220 whp with me changing the rev limiter to 7000. now I'm getting itchy to do more . I went ahead and purchased HPtuners although im not too savy on computer tuning, i grew up around carburetors so im good with the concepts but not the actually application soo thats part of my reason for joining this site so that i can gain a better understanding of ecu tuning in general and of course for my car specifically.