After reading/searching for info about EEC tuning. I have decided that I want to go the Tweecer R/T route prior to my stroker build. I have a pretty good understanding of the basic operation of the EEC IV. Just have a few basic questions that a search could not answer. I know I'll need: Tweecer R/T BE EA WB via EGR (not used) 1) I plan on using a 90mm LMAF, all I need to do is load the transfer function. Correct? Then use the appropriate size injectors and input the corresponding value into the EEC tables? Then tune from there. 2) I'm not clear on how the Tweecer interfaces with the EEC. Any pics? Pics of cable used to interface between laptop and EEC a plus. 3) Is an extra exhaust bung needed for the WB? Or does it replace one of the existing O2's? I'm assuming use of the WB is temporary for tuning and data-logging, not daily driving. 4) I also have a 67 that will be EFI. Any way to use the Tweecer, BE, & EA on more than one vehicle. I know some of these could have been answered with a search, I didn't have much luck here or on the corral. I'm an engineer and have some programming background. So, understanding of the basic EEC logic is no problem. I'm really looking forward to tuning/data logging on my own without having to rely on a shop. Thanks in advance. Edit: I also read a little about Quarter Horse on this forum. I couldn't find any info via a google search. Is it still available? Any preference over the tweecer?