ECMlink starts to lean out bad @4700 feels like brakes applied (logs attached)

[fastfred]

Went WOT in 3rd and about 47-4800 it felt like the brakes were applied and the exhaust pitch changed drastically almost like fuel cut. I pulled over checked under the hood no issues found. Started home made a few pulls, all was well. Grabbed the laptop, went out happened again in 2nd, 3rd, and 4th. Looked at the log and it's starting to lean out @ 4700 it appears to hold boost fine @28 psi but won't reach full boost (32). Boost leak tested fine, ignition is fine, fuel components ok. I've attached a log of the problem and one of the car running good. The good one is long but if you skip to about 2020 seconds you get a good view of how she normally runs. Thanks for looking, all help/suggestions welcome!!!

 

[BoostedBeaver]

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Robert