my untuned 99z
As far as the tuning goes, that cam is a pretty big cam to be driving around un-tuned. I would recommend getting it in ASAP for tuning. Simple driving, highway driving and etc. for a short amount of time is not going to damage the motor from being un-tuned. I would not be doing any WOT runs or leaving it like this for too long however.
good indiana tuner anybody????

