Whats Wrong Combo

I'm going to say the convertor. The big duration at .050 isn't helping either.

If the tune is right I'd think it should run some 11.0's or better.

Untouched W5's aren't great and only marginally better than OOTB ede's. I think they are in the 250cfm range at .550. That would make your power more around 500-525hp if spot on.

I agree the car isn't running to it's potential.

What are the incrememntal time from the slip? You should be in the 1.50's to get low 11's.