G
Guest
·i ran my standard cab R/T about a month ago and i have k&n intake, flowmaster cat back exhaust and a jet chip. i ran with my tonnou cover, tailgate and full size spair. i also have 3 12 inch subs, 3 amps and a huge ass box that i cant take out, i ran a consistent 15.2. i just ran again last night but i took off my tonnou cover, tailgate and spare i also added a 180 degree tstat. i ran a 15.5. the only thing i can think of is the first time i ran with premium and this time i was on regular.