Any of you manual guys know the difference in ET you made without a 2 step retard (launching with no boost) vs using a 2 step retard? A guy is making us one for our LS1 cars and I'm wondering how much this will help my et. The auto guys seem to generally be better only with their 60' and 330' times. I have a best 60' of 1.71 but launching with some boost might get me a low 1.6 and maybe aorund a .10 from getting a 10.99 et. Thanks for any info form your track experiences.