My car went into limp mode and I pulled these codes and would like to check the suggested part against your knowledge base since I don't have the money right now to buy random parts trying to guess what is wrong:

P0300 multiple misfires
P1093 VVEL system performance (bank 2)
P0300 multiple misfires
P1093 VVEL system performance (bank 2)
P100B VVEL response malfunction (bank 2)

Part suggestion: MAF.

Does bank 2 offer any insight as to which MAF is bad?

 

Swap the maf, clear codes and see if it goes to the other side.....
that will at least rule out the maf

 

Also bank 2 is left side (driver) 2 4 and 6

 

I think the "ASE suggested solution" is wrong. It is possible a bad MAF can cause misfires, but in your case the VVEL system is not working and that can also cause misfires due to delayed/advanced valve closing.

The lowest cost next option is to buy a cheap ELM327 and app for your phone.

Then you can look at the fuel trims, which will tell you if your car has a rich/lean condition.
You can also look at the "mode $06" data and look at the "misfire" counters and see what is going on.

All that for under $30

 

I would lean towards a coil but they are very easy to diagnose. While the car is running, try to unplug each coil one at a time until the one you unplug has no effect on the idle. Replace that coil. If your car starts to idle worse for every coil you unplug, then its not a coil problem.

 

Yeah, MAF didn't work. I'm planning on replacing all 6 spark plugs because it's about that time anyway as well as the PCVs. However, I did buy an OBD2 reader and will plug it in tomorrow. I'll reply with further info after I check it out.

 

Also, would it be fair to assume that since the issue is supposedly on only one bank, the fuel pump/filter/gas isn't the cause?

 

Correct! Any item that is common to both banks is probably not the issue.

 

That’s not possible on the G37 for an accurate diagnosis. Intakes are removed

 

Have you checked the sparkplugs. I just changed mine today in an hour with 80k ok the clock. 3 and 4 were dirtier compared to other 4 but grey not black. I seafoam car at 50k and 70k