Miata Turbo Forum - Boost cars, acquire cats. - Smoking/Burning Oil on Decel Only?

[POSTED THIS AT THE .NET ALSO]

I know I burned a little bit of oil on drives and while auto-xing, I figured for a car thats 18 years old, 130k miles on it it was normal. But apparently its getting a little worse, this was taken today during a group drive at shady valley (AKA, the Snake), I'm letting off and the car is at or near the revlimiter.

Attachment 215433

What would cause oil to do this ONLY when letting off the throttle, they said under hard accel it doesn't really seem to burn anything. Other than raw fuel since my O2 is dead ATM.

It does have a testpipe, and stock exhaust for the moment...so no worries about the O2 killing my cat, however I did manage an impressive 18 MPG.

Thanks guys.