About 20* timing. Everything is still super conservative with the tune. This turbo spools maybe a tad quicker than the GT45 but they are very similar. The butt-dyno tells me the old GT45 was a bit stronger on the lower end. That turbo is just a beast for what it is. I think the 7875 will do better on the top end.
AFR dropped to 10.1 (gas scale) under boost which can’t be possible. The motor usually drowns when it’s that rich. Not sure what is going on. Maybe O2 sensor is failing. My tuner says it’s either the E85 mix (I tested and it’s E85) or fuel pressure. When I get in front of my laptop again I’ll share my VE, AFR and Timing Tables.
Same wideband or new sensor? I had a similar issue. Had car setup for 11.3 afr. Used my wideband on another project. New wideband shows 10.0. Swapped sensors and I’m back at 11.3.
It’s a new Spartan controller and Bosch
Yep, I log everything and with the exception of the AFR everything is where it should be. First thing I checked was injector duty cycle and it was the same percentage as when I’m hitting 11.5-11.8 AFR
I gap the plugs pretty tight at 0.020 but I thought about blow out also. Engine certainly doesn’t feel like it’s loosing spark. Thanks for the suggestions.
I bought this controller and O2 specifically because it has built in support in MS and excellent reviews. https://www.14point7.com/products/spartan
Don’t laugh but I just have a piece of gorilla tape over the hole hiding the shortened shaft. The sensor is held to the distro body with those two little plastic nubs. An alum plate and a couple of screws would be better for sure.
I’m not gonna knock anything while in the testing stage. How is the power with the super victor compared to the dual plane and fitech? I would assume idle quality is a lot better with individual timing and fueling compared to the old setup
It’s absolutely smooth all over. Like a modern car. Took a while and professional help to get it there but I love the Megasquirt...so far.
Not sure if it got covered but what’s the map reading? Is it tracking the same as boost guage? Just thinking out loud.
It’s pretty close. Hard to keep an eye on anything really under boost though.lol. I usually watch AFR closely. I might try enabling the meth spray at a little higher psi and going thru my VE table I see it’s going rich in a couple of cells that are higher than the adjacent ones. I think we bumped those up a little high to provide better quick WOT fuel.
