Yes, good constructive feedback is great and is highly appreciated.
The emissions issue is a country by country issue. We sell EFILive to countries where the US EPA has no jurisdiction. EFILive is manufactured in a country with zero vehicle emissions laws. There is a very clear warning about emissions compliance in the EFILive software. That is not what I meant when I mentioned legal issues.
EFILive has been hit with multiple lawsuits from variety of sources, mostly from within the tuning industry (there are some crazy people with even crazier ideas in this industry). So far none have had any validity and all of them have been rejected.
If we published a tuning guide, based on previous legal challenges that we've faced, I believe it would open up other avenues of attack and give the crazies even more ammunition to try and take a shot at us. At the very least it would provide a lot of fodder for flame wars on various forums.
However, the legal reason is probably a very small part of why we do not intend to publish a tuning guide. The main reason is and always has been, it is difficult (if not impossible) to do properly and to make it useful to a broad cross section of people. Which is probably why no-one else has done it either.
Let's assume for a moment that someone was prepared to develop a beginner's guide to tuning.
What topics would it cover? Which vehicles? Which engine setups, would it include transmission setups? Diesel or Gas? Open loop or closed loop? Would it cover tuning using a wide band? Which ones? Would it focus on MAF or MAF-less? Dare I mention injectors and flow rates fuel pressures, referenced to manifold vacuum or not? Should it cover how to tune on a dyno, a load cell dyno or not? Or maybe how to tune on the road? Normally aspirated or forced induction? Street legal or off-road? Which country's emissions laws would it adhere to? Would it cover tuning for maximum power or drive-ability or maybe just economy?
It is not a trivial task and forgive me for re-stating the obvious but there are as many ways to tune an engine as there are customers who want to tune. Heck, even our own customers do not tune their vehicles the same way.
If anyone invested the time and effort developing a beginners guide to tuning, some newbies may find it useful but I have no doubt that most everyone else would just sit around bitching about how its not what they expected and that it doesn't cover the exact application that they wanted to tune.
Regards
Paul