Just a quick question if there are any of you that do tunes. I have the comp cam's 270ah cams in my 99 gt. I have issues with idle and it seems like I should retard or advance the timing but am not sure to what degree. I have the sct. Livewire tuner that gives me ample options for tuning. Ive had it running descent by bumping up the idle rpm and leaning the fuel air mixture 4% and turning the egress off, but I feel like there is more I should do to optimize the performance. Thanksin advance for any replys.