Follow up.

Hooked up the Corvette rear O2s - no help!! Trims were still +25 at idle. Trashed the Edelbrock 90mm TB and replaced with a new, stock 2000 Camaro TB. The new TB did it!!!! Trims slighly positive. The MAF is incorporated in the "Street and Performance" custom intake - they have modified the housing so I will adjust the MAF table. Thanks guys for the help and input!!



joel