since i had my truck, ive never givin it a tune up.im at 42,000 mile right now.my L is basically stock except for a jlp filter kit.i get on it often and it feels fine.power wise its good no loss in power .im just wondering when i should tune her up.and what plugs work best for our trucks?well for a stock truck that is. 
any info would be great . thanks danny
any info would be great . thanks danny
