The only times I did before the Filters and the chip were with a stop watch and the 0 - 60 times were right around 6.5 - 6.7 seconds. I didn't get the G-Tech until after I made the improvements. I've been sold on K&N filters for years. In my Explorer I was getting right at 18 mpg with a mix of hwy and city driving before the K&N.... I installed the K&N (I changed to Quaker State Syntech oil then too) and ever since with the same mix I get just under 22 mpg.