How to Use and Upgrade to GM Gen III LS-Series Powertrain Control Systems - Paperbackby Mike Noonan (Author) The photos in this edition are black and white. Without a doubt, GM's LS Series engines are the hottest thing going right now. Thousands of enthusiasts are either modifying their cars factory equipped with these engines, supported by a robust aftermarket, or converting their vintage muscle cars to run with these efficient and powerful engines. Of course, with technology comes complexity. To get the maximum performance and