eightsixgts wrote:Thanks for the response, I forgot to include the lift of the cams is 8.5. With the current idle jets I have now the idle is at a very steady 14-15AFR with the idles turned 1.75 out. When I'm in 5th gear cruising at 65mph with the stock 4.3 final I'm seeing AFRs around 12.5-13 which I really want to lean out. If I do the same 65mph in 4th gear I get a more comfortable AFR I'm actually looking for. I will actually be swapping to a 4.77 so maybe my issue won't be such a problem, but I still want to see if I can correct it a little bit. Tuning guides say you can get most carbs tuned to run well in a very general way, but if you're tuning for power, you're giving up mileage and drivability, and if you're tuning for mileage and drivability, you're giving up power. Oh well, I enjoy spending the time changing things up with these and taking notes so I'll be sure to continue to update with my findings.
12.5-13 AFR on your setup is prety good performance for a daily driver. Last time I tuned my car, my idle AFR jumped around in the mid to high teens but i was more focused at tuning WOT & 12.5 optimum was my goal which I eventually got.
My truck however, I had a really hard time dialing in my 3 circuit 750 dominator.. The AFR was never close to what my car was, & much like the dcoe's air restrictors, I had to open up the air bleeds quite a bit for each circuit..idle, intermediate & high-WOT, jotting numbers down & keeping track..it's a task & time consuming