I just got the new DiabloSport Predetor Tuner and i set the tune up for the "Diablo Tune". I added premium fuel (91 oct. in Calif) and i added an octane booster just in case. I seriously noticed a differance for a while then coming back from Santa Barbara (i live in Sacramento, 400 miles away) it seems like the tune went away. It felt like the car was as fast before the tuner. Then as i started messing around with the engine i started hearing a ticking sound from under the car. I sounded fine in the engine bay. And i looked at the spark timing an it kept dropping up and down. So im asuming that its knocking? GUYS PLEASE HELP ME!