Found the site while searching for books on engine tuning. Looks like a good place to land. I'm a retired engineer (both electrical and mechanical) with a fair amount of real world experience in modifying engines and repairing almost everything on a car; my first was a '65 VW Beetle; drove an '87 RX-7 for 20 years (modified); now with a 2015 VW GTI I plan to reprogram the ECU and TCU. Worked on others along the way. Looking forward to meaningful exchanges.......