I’ve lately made a WOT log run on autotap and here’s what I’ve found:
O2 readings are in the high 800 low 900 which is right on.
Pulse width is somewhat low, it was 13.8 ms at 6056 rpm which is 70% according to the equation [(duty cycle/1000)*(rpm/60)/2*100] if that is correct. Doesn’t this seam low with my combo?
My max MAF reading at 6056 was 43.812 lb/min or 333.4 g/s. This with 0.5 BSFC and my set target of 13.5 AFR at this rpm and temp should give an approximate HP of 389. Again this feels low.
I’m still running the stock paper filter, so maybe that’s what’s holding me back. I’ll try to log another run without a filter and see what happens.
I’m getting ready for my first race in about 4 years so any other ideas about the low numbers are welcome.