Originally Posted by Jason 98 TA
Good questions for sure. I haven't seen anyone try a pulley swap without tuning. Maybe someone here will jump in with experience trying that. The lower pulley is easier to do than a upper & can be returned back to stock very very easily. 93 octane is always important with a boost car no doubt!
this thread is a good read
2013 ZL1 10%lower,rotfab,90mmtb,SP headers
(president of the tangent oregon trophy husband association, founding and only member)
2013 Megacab 8" lift 38"mt's