Should I put Premium fuel in the tank for the testing. Do you guys have any other ideas that would help the truck test better. The last time I went in for a test they wouldn't put the truck on the dynamometer. They said the tires were to big. The test was done at 2k rpm for stationary testing. I don't have a tach and they made me do it anyways. I had no idea what the rpm was an neither did they. Bunch of BS

 

There's a product that i use when testing along with prem gas called crc emissions pass(or something like that)crc emission for sure.Have recommened it too friends that have failed and they go back and pass.$10.00 at most places.I use it on mine with no emmissions stuff on the motor at all and pass with flying colors.