I am in the process of doing a bunch of mods to my engine, was wondering if it would be eisier if I did the mods in steps in relation to tuneing, or should I just do all the mods then tune? The reason I ask, I changed the rockers to 1.6 and the intake from stock tbi to weiand, and that crapy old stock coil is MSD now, and I have to wait two days to get the holley tbi ready to go on, but I have everything to put the old tbi on, just wondered at a tuneing stand point which would be eiser? to wait till the holley is ready and tune, or put on the stock tbi tune, then when the holley is ready, put that on and tune?