Rev limiter?


Active Member
Jan 12, 2012
Hey guys my car revs till max rpm 5600... When it gets to around 5k rpm it starts to breaks up... till you shift up to the next gear.. I have just changed the plugs, coil.. The motor feels like it wants to climb rite past this... Im at a loss
ac delco .025 gap, and the boost is around 22-25psi.... any help would be appreciated