ECMlink Lean condition when entering WOT

[llxkevinxll]

1). Any boost, vac, or exhaust leaks?
None

2). Verified mechanical timing?
Yes

3). Verified base timing?
Yes

4). Ignition system
COP or Stock Coil: Stock Goil
Wire brand and Age: MSD - 300 miles.
Spark Plug brand, type and Gap: NGKBPR7ES. Gapped to .028"

5). Motor health (Compression Test) - Not performed recently
Cylinder 1:
Cylinder 2:
Cylinder 3:
Cylinder 4:

6). Performed basic throttle body adjustments?
Idle Switch: Yes
Throttle Cable: Yes
TPS: Yes, but the log seems to indicate 99% is the maximum of the TPS position. I will need to adjust again.
BISS: Yes

7). Compression ratio -
10:1

8). Any known bad sensors or brittle wiring?
None

9). Any DTC/CEL codes?
None

10). Electrical system
Car off (not running): 12.5v
Car running: 14v

11). Base fuel pressure and injector values
Base Fuel Pressure: 42.6 psi
Injector Size (cc/min): 750 cc/min

12). Properly calibrated and configured wideband sensor
Sensor Brand: Innovate MTX-L
Calibration Date: 6/2016

13). Type of fuel
Type: Shell 93
Percent of Ethanol: Unknown ethanol %

14). Watched ECMlink how-to videos?
Yes


Hello,

I have begun tuning my car and I seem to be running into an issue with the car running very lean upon throttle press. I have attached a trimmed log to illustrate this issue. I have tried moving the TipIn sliders incrementally with little result. They are currently in the top 3/4 of the overall adjustment.

My question is, what is causing that spike on the wideband? Does that spike also result in the knock you see directly after?

Thanks for taking a look,
Kevin