I have a 4150 750 HP on my cutty and I've narrowed it down to me needing to up the air bleed size on the primary to lean the car out at idle. The problem I'm having is no one in the area carry these and they won't get here till Tuesday if I order. Im thinking about drilling out the ones I have now. I would be going up about .007 thousands with my next bit. Would that be to much. Its a server rich idle and will bog out in gear.
