I've been having issues with what seems to be a dead spot in acceleration on WOT. if you look at the attached log at about 16:38:41 acceleration just levels off but afr/spark seem to be fine, it does the same thing but actaully dips in RPM at 16:38:45 at around 5700 RPM. The engine is a 6.0 based 408 with 246in 252ex .620 lift cam, LS6 intake with 42 pound injectors and ported 243 heads. The car did something similar when it had a LS9 cammed 5.3 in it but was less noticeable due to a lot slower acceleration. Behind the motor is a 4L80e with a shift kit. Wondering if there could be something with the transmission causing it as i dont see where the engine tune would be influencing this flat spot? Any help would be greatly appreciated!