ive heard time and time again that zzp cant tune and i disagree. i tune with hptuners and yes they seem to run you rich but i agree that they should. they cant run your car to the limit as they cant see your car so they put in a margin of safety (at the price of running rich and soft on timing) to compinsate for all the different factors your car can pick up. what if they pushed your tune to the limit and u have a bad fuel filter...by by motor. i have viewed their (canned) tunes and believe they r very compitent at what they do. their tune will run circles around your stock tune and add power/life to your car if u have mods but havent gotten to the point where your ready to tune yourself yet.