Howard, but can the SXE 369 spool as fast and have the area under the curve that the 9180 has?

Transient response will not be the same. Pulls from low rpm in high gear probably won't show much difference. If you have a close ratio box or high stall the efr probably isn't worth the extra cash.

There has been a SXE 369 dyno sheet posted and it is significantly laggier then then the 66mm SXE or old school SX 66mm, which is should be it is a 69mm. Compared to the EFR 9180 it is not even close.

A EFR 69mm would be great! Makes a lot of sense. The exhaust side would be the same as the current EFR 9180, which is the biggest Borg Warner can go currently I hear. Spool would still be worst the the current EFR 9180 but would be ridiculous for 69mm!