i had about 6 galls in the tank of 91. added 2.5 of 107. i figure im at about 100 octane now. basically my car bogs in boost now.... i had it tuned to 12:1 with very conservative timing on 91.

thoughts?

 

maybe your just rich but i havent heard that really high octane gas could hurt your car. Hows your a/f looking?

 

it was 12:1... if anyting its 11:1 or 10:1 now... ive found on cars ive tuned at 10.3:1~ they start to bog... so i either am that rich or something... im going to add some timing and see if that helps. 1 degree per # retarded with this octane is just stupid.