FAST EZ EFI 1.0 Air Fuel Ratio

[nitetrain4590]

Was hoping folks familiar with this system could help me out. I've got 1800 miles on my 355 SBC with an EZ EFI 1.0 system. I had an issue with my TPS a few weeks ago when I was cruising and there was a major hesitation at around 2k rpm unless I downshifted. Replacing the TPS fixed that issue, but I started to notice my AFR seemed to jump all over the dang place. I did put in a new 304 stainless exhaust a year ago, but I'm pretty certain that everything is tight and sealed from getting ambient air into the exhaust. My Target AFRs are:

Idle: 13.5
Cruise: 14
WOT: 12.7



I have two videos of my handheld at cruise (2200-2400 rpm) and at idle (800 rpm). Does this seem erratic and all over the place? I have a second bung in my passenger bank collector, so I'll give that a shot and see if anything changes. It does seem like the engine runs a bit rich when warming up in the garage. Is there anything wrong with the o2 sensor? I probably should have been paying attention to the AFR's but this is the first time I'm really watching closely.

https://drive.google.com/open?id=10-..._bm6w3ZNtyUVU4

https://drive.google.com/open?id=100...h_DqbvuzisPXCy