when i am in full boost af ratios are 12.0 by my wide band its pulling hard but when let of the throtle to about 3/4 throtle it pulls harder pretty noticeably . it feels like about a30 hp gain. i have a jim wolf tune with timeing set at 21* btc @ 700 rpm can anyone explain this, is it normal ? i'm thinking of advancing timing more but do not want to detonate. i'm running 12 psi on stock internals so detonation would be bad.
