993 compression
 

I had the engine out, heads were rebuilt, cylinders cleaned and new rings were installed. When I started the engine it seems to be running very rich, is hunting and seems unstable. I did a compression test to see what I had and got 205 all around. Is this possible, anyone know what I should have. Maybe the 205 is correct considering the assy lube on the new rings and all. Anyone experience this? :confused:

On used air cooled engine, 190 is a good number. So for a fresh engine build, 205 is really good.

Given they are all in the 205ish range, that is the real confidence you glean from those number (all 6 in a tight range), as on a used engine 5-10% variance is the trigger for a red flag.

You have not shared other detail so hard to project what the root cause could be, but what you describe has met looking at timing and intake. A few sensors that need to work correctly to let the ECU do its thing, if one of those is bad/offline, then the engine will not run properly.

Thanks for the info. I was thinking there is something wrong as people are telling me I should have say 170 PSI. If the specified compression ratio of 10.5:1 is true then say 15 x 10.5 is around 160. How can I have 205? Am I missing something here?

All connections are correct. I ran my buddies Durametric obd2 scan tool to see what I can find out. It doesn't seem to want to save any running data so I have to write everything down by hand. I have no CEL or fault codes. It reported the injection time at 36.8 ms, throttle plate angle at 0. I have some other info but now have to try to determine what is a good bench marks so I know what I should read as opposed to what I am reading. I have something called a "load signal" at 4.0. Not sure what that is, maybe that's causing the injector time to be way to high.

I think perhaps you misunderstand compression ratio. Compression ratio compares the volume of your cylinder when the piston is at bottom dead center (BDC) to the volume of the cylinder when the piston is at top dead center (TDC).
For example, if the BDC volume is 10 cubic inches and the TDC volume is 1 cubic inch, then the compression ratio is 10:1