ademon - in a round about way you've answered the problem.

I needed to know if these SP intakes caused issues with TQs - clearly as your running one on a non stock 360 , this tells me the TQ circuitry can work fine on an M1.

Obviously my problem is elsewhere - and I'm thinking SSH is right, and its a Vac leak.

I've had TQs a long time - there's no issue with the calibration - except that I knew something was up when I had to go so rich on the primaries and it still showed lean on the AF guage.

I just hope this intake is not porous - I bought it off a member here.