One possibility could be your shifting and at what RPM I know back when I had my s197 that had a Off Road H pipe and tune my mile per hour would vary from a low of 112 all the way up to 116 with the majority runs of 114
Any 1/4 times on the Ford Power Pack 3 for a manual transmission. Normally I mod my cars from the day I get them but Im getting rid of my heads cam 2015 Camaro due to warranty headaches and I would like to keep the warranty on my Mustang and just wondering what some of the 1/4 mile times have...