Car's been running a little rough here the last few days, its always had a weird idle, kinda bubbly sounding when it idles. Not sure if its a plug or coil pack issue.

2.5 Pulley, Intense Stage 5 kit, Vibrant Long tube w/ high flow cat, snow water/meth injection, injen intake

Plug suggestions to try?

I've already had bkr7res, and currently have an autolite plug

 

Stage 5 kit? What does that even mean? Intense is not known for it's quality...

 

INTENSE-Racing.com: INTENSE LSJ Stage 5 Performance Package

Theres a list of parts thats included in the kit. I've had the kit for 60,000 miles no problems, 22-24psi boost.