438whp gsr on 93oct
Posted: Fri Apr 08, 2011 2:32 am
Stock gsr head Blox im Stock tb JE 9-1 81mm pistons eagle rods obx cheap ram horn t70 turbo on 15psi creeps to 18psi(need new manifold badly u can tell up top on the graph) 3in downpipe and 3in cat back 
retuning after i get a new manifold and 44mm wastegate and more boost
retuning after i get a new manifold and 44mm wastegate and more boost