It is a 3.9V6 and it does have oversized tires on it. I found out the hard way with a $200 speeding ticket. My speedometer is off by 8mph. I haven't done anything else with the truck. I am looking at way to save. I bought a K&N filter but the only thing I saved is that I don't have to change the air filter. That was a wasted buy. I changed spark plugs and ran synthetic oil and no change either.
Hybrid Mode
