mystic high
New Member
my car starts running rough & missing on long trips.I replaced denso's with NGK's and had it running great, but drove about 450 miles on a trip and it started again. If I let the car sit and cool down for awhile it runs better. Going to look at the plugs tomorrow . Mods are KB@15psi , 55's , BAP , CNL . does anyone have any suggestions ???? Engine temp is good and no ckeck eng. light
