My plan is to front mount turbo and blow through a carburetor while retaining most of the factory electronics/engine controls on a 99 Silverado 1500 5.3L. I have some ideas on engine controls but need some tips so I don't start heading down a path that is obviously (to more experienced tuners) not going to work. I have V2 up to date.
Current plan uses bone stock long block as GM put it in the frame, replaces intake with an edelbrock LS style Performer RPM dual plane aluminum intake, knock sensors stay, ect sensor stays, MAP sensor is replaced by either a 2 bar or 3 bar GM, TPS is the Innovate Carb TPS kit earlier GM style TPS, stock coils and ignition, Oxygen sensors for tuning as Needed, I have a new AEM UEGO wideband gauge/sensor and can use 1 or 2 NB sensors if for some reason they are needed. I would like to eliminate the Maf if possible if nothing else for more of a simplistic approach, I would then use a separate IAT sensor and would need to figure out which one is best to use and where is best to put it (before or after the carb). The PCM will not be handling fuel and I want to kill all DTC's related to removing all the injectors and pulling that chunk of harness. I want spark to be adjusted for Boost, IAT, ect, heat soak and any other variables that will effect optimum timing. The goal is for the 4l60 to still shift properly, cruise to work, IAC to stabilize idle and coast rpm. The Air pump/egr will go and I want to turn off all DTC's related to that as well.
The goal is to push the limits of the stock assembly to put down track times, knowing that a boost adjustment and minor retune is all thats needed to make it more of a DD. I have been asked why I don't use the MSD ignition controller box for the LS intake and one of the reasons is that I want all of the other stuff on this truck to work. In an old muscle car it might be an option, but I think this way it will also be able to adjust for boost much more accurately.
Here are the problems I am currently trying to solve,
Do I need to run a MAF or can I run MAFless or create a SD tune?
Will the maf be able to accurately read airflow under boost of 10/15/20lbs without error if I determine I need to run a MAF?
Once that's figured out how do I rebuild the VE table (assuming I would even need to?)
I find that to use a 2 bar or 3 bar map sensor I need a install a COS?
How do I go about getting it from EFI Live, will it cost me anything, what is involved in installing it?
Do I zero out the TPS manually by adjusting it in the bracket it mounts on or can I set zero and 100 percent electronically somehow? I assume the latter but how?
Those are some of the big problems I am worrying about right now. Hope you guys can help me get started on this. As you can see I love to dive in head first and then see if I can swim