....quick question about the ARAP bin. I just recently rebuilt my 89 MAFL98 with a ZZ4 cam, ported/polished 083 heads, 10.1/1 compression with 28lb@58psi ls1 injectors. ECM is 165. I can run the car on the current APYU bin but it really does not like it. I will have access to a scan tool on Monday but not until then. What should I start my injector constant at and how much of the spark tables from the ARAP bin can I realisticly use. I want to get some driveabiltiy from it until I can get the tune on Monday. As of now the idle ifluctuates between 500-700 rpm and it smells like a gas station at the back of my car. Sooo, I guess what I am asking is what part of the ARAP bin can I use for now to tide me over, or am I better sticking with the APYU bin and working on my injector constants? If my math is correct 28lb@58psi=24lb@43.5psi. Can anyone toss a little advice out. I am just looking for something close until Monday.