MegaSquirt PNP for Miatas

[FoundSoul]

Can anyone comment on the rate of fuel burned with a PNP or other ECU set-ups? I would imagine it has a lower bsfc rating. Might make for a better enduro set-up.

With a standalone such as the MSPNP you have the capability to adjust your ignition timing and AFR at different load/rpm cells allowing fuel consumption to be fined tuned for sure. In any situation you can only go so lean to accomplish better fuel mileage, and in a race situation it's often even more important to err to the side of caution here for reliability's sake on a engine you're running harder than normal. But the fact remains with complete control of your ignition and fuel tables you have complete control. Is there a significant portion of the course where you're at 40% load(*) and 6000rpm? Don't see any reason why you can't lean it out there to get better mileage? You've got the power. And better yet, doing so won't effect the WOT areas of the tables at all. You don't have to compromise economy and power, generally these are sought in different load ranges, hence you can accomplish both.


(*) Load isn't really measured in percentages but in kPa, but it's easier to express this way here...