Vtec changeover is obvious. You do the low cam composite and high cam then overlay them. It's where the high cam starts to make more power than the low cam.
There is no way anybody sitting in a bedroom thousands of miles away can tell you optimum vtec points or what best cam angles or ignition values are.
All they can realistically do is stick a base map in and setup the AFR to what looks right.
Bottom line is you can't tune effectively without a repeatable Dyno. The whole art of tuning is the measurement of tractive force and the changes made by the effect if ignition and can angle changes. Setting AFR is just the start.
Please don't just change your vtec point to say 3500 because YOU think it needs to be there as chances are its going to be totally wrong and labour the motor.
I have "road tuned" many cars in the past but they have been far more simple with no vtec or vvt. All your interested in is fuel and ignition. You know the motors and design and whether they are knock limited or not so you can be pretty close to optimum fairly easily but these modern motors you really need to measure the difference say 5' of intake cam advance makes at a time as it can make so much difference in real world terms.
