ive been trying to get a clear picture of what benefits a williams has over the 16v. basically its torque low down, its power band. in that case would a modified 16v (gasflowed, cams, chip) be able to do the 1/4 mile in the same time as a chipped williams then ? if they had the same bhp that is. ive seen a few ppl here have valvers around the 160/170 mark and i presume that a williams chipped would be the same. im saying this as the 1/4 mile dosent really involve the low down torque, so the rest of the band would be quite similar. whats the best time anyone has had from an orig 1.8 lump anyway ? im asking as my cars booked in for the work, and im considering trying it on 1/4 mile. the last thing is how much diff do 17" wheels make in a 1/4 mile run, everyone that possibly can change there wheels, it is a significant amount then ?