Sure this has been covered but i couldnt find anythin on the first 3 pages so decided to do a new one!
Whats the 1/4 mile time for a standard williams or one like mine say with knn and cat back (with full leather )!?
As per the g-tech post on here i did one last night (not sayin its accurate) in 15.93@89.4mph so is that about right for the mods?
Car was very warm at the time due to a few razzes id just had so dont know if thats a bad or good thing!