Boost and Timing Question??

[bluedevilblacky2k]

At what boost psi should I think about retarding my timing and by how much. Presently I am running MPI super charger with 7psi boost and the timing is stock. Would it help me to retard timing at all at this point or leave stock. Sled is a 2006 Attak. Thanks

 

[Blue shadow]

I would only start pulling timing after 15 psi boost.That would be done with a msd .You would be fine with with the stock engine but run good race fuel after 10 psi .