Under TunerCat, I've got a switch for VATS Diagnostic (which I have unselected) but I think I have the VATS system disabling my fuel injectors - car fires right up, runs about 2 seconds, and dies. Fires right back up again.

'88 Camaro, running a '730 repinned to a '749, $58 code


LOL, meant to ask - where might I find the bit to disable the VATS system? Looks like I might have to do this the hex route

 

Not VATS, the $58 code doesn't support it. Probably a little lean on the VE table or BPC.

RBob.

 

I just did an $8D swap to $58. To start the engine I did minimal changes to the original BBZB $58 bin. All I changed was the BPC vs. EGR tables to a value of 100 by using the equation I found searching DIY PROM.
The car was very rich at idle. The DIY WBO2 read about 12:1 AFR. I removed about 20%+ of fuel at idle.
Your setup could be rich or lean. That is probably what is causing the stall.

 

I'll hook up the WB02 tonight, see what it says about the AFRs

 

Make sure you put a 2-bar map in it if using a stock BBZB. It will be real rich if you use a 1-bar. Just thought I would mention it because it is easy to forget.