Hi, Newbie to the group here. Any help will be appreciated . I have an 85 vette 4+3. Symptoms are as follows:Car starts & barely runs. Super rich black smoke shaking and missing. At High rpm's will smooth out a bit and stop the smoking, but as you get down under 3500 rpm, it runs more and more like crap. This is what I have done so far. I replaced the Maf sensor, the CTS, the intake manifold temp sensor and the 9th injector sensor. Also installed a adjustable fuel regulator and plugs/ wires. Not with new, but known working units except for plugs and wires. Runs exactly the same, like crap. Obviously all I replaced was fine.:WTF Had injectors out and checked for leaks. Ohmed out injectors all 8 at about 16 ohms. Checked for vacuum leaks, do not appear to have any. Started engine. Same problem persists Coolant temp gauge shows 299 degrees and later goes to low. Car is not overheating. Jumped connector and pulled the following codes. 12.. 22 replaced Tps and set voltage to 5.3..,, 33 Maf high ( have 2 know for sure one is good).., 43 Electronic spark control ( what can be done?).., and 45 rich exhaust.. like I didn't know that.. I am out of clues. Any help as I said before would be appreciated.