You could have a rear main leak. And when you romp on it all the oil goes to the back and then the higher exhaust temps cause it to burn off..
Also the rear of your valve covers or lower intake could be leaking too.
Matt, 90' GT 347, 6037 heads, V1 Si-trim, 11psi, B31 Cam, T56, SV Intake, BE/Tweecer Tuned. 550rwhp 513tq
Bonneville 130 club member. (139.993) 11.48@123 in the 1/4.
03' Sonic Blue Cobra 497rwhp 481tq
13' Taurus SHO Performance PackDaily