https://www.rx8club.com/attachment.p...chmentid=31718

the only difference between the "previous" and "latest" plots were about 6 degrees of timing in the 5000 - 8000 rpm range... thats why we are wanting to add timing advance

 

What I'm saying is that you might actually make more power with less timing over 7000 rpm but more below it. Just because it doesn't ping doesn't mean it is still making more power. I've got a printout of a datlogged run we did in brillo's car. Full timing advance doesn't even come on until 7000 rpm. It should be full somewhere around 4000-4500 rpm or so. 25-26 degrees or so is usually the max advance I will go up to at full throttle. Every engine is a little different but that is a good starting point. Stock total advance at full throttle is 30 degrees. If you are advancing past this point at full throttle, you are not gaining anything from it. In fact the reverse is most likely true. Where Mazda's maps are messed up in regards to timing, they are also messed up in terms of fuel. When the run too much timing, they run it too rich to compensate. When they run it too lean, they run too little timing to compensate. Why they can't find the perfect midpoint where it works best is beyond me.