Rough Idle Help

[faler]

check your coils under LOAD!!!!!
put in gear hold brake 2500 rpm
disconnect coils one at time when u find one that has no effect on eng sound rpm thats the bad coil!!!!! at idle this will not identify bad coil!!! took me 2 weeks to figure this problem out!!! unplug maf so runs with airbox off...

here is my LS3 in my Z for bonus
lol