I read the article. Total BS. Since when do our computers not let you add bolt-ons? My car is running the STOCK TUNE and I've gone 13.3 last year and should do mid-high 12s this year...got a bunch of bolt-on parts (including exhaust, intake manifold, CAI, throttle body, and 1.7s), a converter, and a nitrous kit. My computer has been FINE- 100% FINE.
Utter crap- they make it sound as if you CAN'T add bolt-on parts without getting a tune everytime. Absurd.