Got a problem..fuel? Trans? HELP!

[streetknight]

Car info- stuff in sig, with 2800 PTC 9.5" NL converter. Running 20psi.

ISSUE-

at WOT the car will leave good and shift @ 5100-5200 on the 1-2 shift. BUT on the 2-3 shift it's spiking to 5800-5900 RPM's. When it does it's dropping to 4300 on that shift, the boost drops and car noses over. On that shift the car leans out and the AFR goes from 10.8 to 11.2 and I get knock on the shift, about 3-4 degrees.

Chasing my tail here guys, any ideas? The Duty cycle shows 85-86% for most of the run except for when the RPM's shoot up and they're at 99.6% when it's leaning out and the boost drops.

 

[Razor]

If you drop boost does the car pull better? Meaning like 14-16 PSi.. go WOT and see where it shifts.

Typically the transmission will flare on the 2-3 when its going out.. this will cause the rpm to go way over until it couples in 3rd. Running it at less boost/less power helps diagnosing the transmission. Ypu can take the arm of the WG.. Wont spool quick but lets you check WOT shift points. Once you have your shift points, then work on turning it up.