ronniegibson1978

i did see an increase in mpg on my car when i had the udp's installed. i would put my car in cruise control on the same stretch before and after the udp's and my mpg went up on some occasions at 4mpg's. the increase wasn't due to the tune either cuz it was re-tuned long before i had the udp's installed..so yes i did see an increase in mpg with the udp's