Hello all,
It's me again. I've been dealing with a VE tune on my LS2 powered Volvo. I'm fine in the low load sections but if really loaded the absolute richest I can be is 13.5-1 A/F ratio. My duty cycle goes over 600%! So just for giggles I grabbed my wife's 06 GTO (same operating system) and made a full tilt pass down the highway logging the duty cycle and other pertinent data to see what I am missing. Same thing happens...The base pulsewidth goes up around 19ms then just jumps to 100ms for no reason. This is under hard acceleration but steady throttle(full).
This is a BONE STOCK (no tuning at all) 06 GTO.
The log is posted and if you look about frame 3136 you'll see what I mean.
Thanks for helping! John...almost out of beer.