Detonation!!!!!

[Slimer93]

Ive been experiencing some mad knocking due to lack of bypass valve. I put my 6# pulley on my blower because I didnt install a wastegate and racing season is over. I know I need one, but until then what should I retard my timing too? Im running 92octane and 10 degrees initial timing. Thanks!!!

 

[Ray@VSK]

Well anytime you change pulleys you need to go to the dyno to have your air/fuel ratio adjusted, computer will not do that, timing aswell.