Does anyone have an definitive info on the
quantity of each B, T & F setting?
The advanced user guide for the SPS has long gone unfortunately, and I can't find what I'm looking for online.
I know the crux of it is:- make a change and log it, but 4th gear full throttle pulls on public roads are becoming increasingly more difficult, so it would be useful to know how much of a change each setting applies before getting up at 3am to do some logging.
So for example, F0 = stock fuelling, which is mid to high 12s AFR @ WOT past 5500rpm, from memory. So what AFR does F1 request? And what AFR does F9 request?
If F9 is the leanest of the "Performance fuelling" options recommended for stock fuel pumps, does it therefore mean F1 is very rich, gradually leaning out again to F9. Aren't 0 and 9 therefore the same? It follows no logic that I can see.
T1 vs T9, what's the difference in terms of actual advance values, and is it a global change to the base timing map, or only when there is positive manifold pressure?
B1 - 9, again, what changes? The amount of boost pressure, or the onset of boost, ranging from soft to aggressive?
I get the general gist of it, but it's too vague for my liking. I like to know
exactly what changes
I'm sure other people would like to see a table of some sort, such as.....
B0 = Stock boost response.
B1 = 5% more response
..
B9 = 100% more response.
T = Stock advance.
T1 = +0.5 degrees global (or just with positive manifold pressure)
..
T9 = +5 degrees
F0 = Stock AFR request
F1 = 10.5 AFR
..
F9 = 12.5 AFR
Does anyone know for sure, or has anyone logged every possible setting and seen what each change makes?
I suspect the actual range of values across the 9 choices is very small to prevent end users from blowing up engines. I would be surprised if the difference between T0 and T9 is any more than 5 or 6 degrees real advance. I would also be surprised if the richest AFR request is richer than 11 AFR. Direct Injection doesn't need port injection style AFRs.
Anyway, just thought I'd throw this out there in case someone has the definitive table of adjustments somewhere!