So if I am reading this correctly, only about 10-15% of owners are getting their cars properly tuned on a dyno? I must say I am very surprised. I see so many cars on my friends dyno that were either e-tuned, chipped, or OTS tunes and the differences after getting a proper tuning session done. The results are night and day. Dyno tuning should be considered the most important engine mod, just like tires are the most important suspension mod.