Erratic Evo8 Maf Raw?

[lil corb]

So I am finally doing some tuning and have verified base timing, and perform a BLT to 25psi.

I am trying to calibrate my AFRatioest to my wideband during WOT and for some reason I am getting an erratic MAF Raw Hrtz from 600Hz to 900Hz. It'll spike really high through those Hz sometime even jumping to 1400Hz. It's causing bucking and loss of power and I'm worried something else is going on.

It's a evo 8 Maf sensor, ETS street kit, Dejon intake and K&N filter. Clamped good with no leaks. 1150 FIC, 190 walbro and Fuel lab FPR.

Any ideas? I was thinking possibly running out of fuel but it doesn't make sense at that rpm and load factor.

Thanks
Log is included:

 

[phantom_19]

Im kind of having the same problem right now. I might clean my CAS connectors tomorrow. My valve cover breather throws oil right on there. I am getting a bad misfire when I hit 3.5K to 4K rpm under WOT.

 

[lil corb]

Im kind of having the same problem right now. I might clean my CAS connectors tomorrow. My valve cover breather throws oil right on there. I am getting a bad misfire when I hit 3.5K to 4K rpm under WOT.

I changed my BOV, fixed boost leaks and replaced plugs and wires. Only to find out that I think it's just the motor running extremely rich when the hesitation starts (according to wideband) thus causing my Maf raw to go choppy.

That's the only thing I can think of and hopefully I can tune it out. The new plugs and wires did help though.