So leaning on a safc from what ive heard and read advances timing so my question is how much is too much for what boost levels,.right now I had to lean 6000-660rpm around -15 @7 psi and im at around 11.1 and 10.9 afr so I kinda wana lean a tad but not sure if its such a good idea,but then again washing off the cylinder walls with too much fuel doesnt sound to great eather...so other then question 1,my question 2 is should i lean a few more dagrees?any input would be appreciated.