[onboost]

I think you may have answered you own questions regarding which way to go or what to check.

- You have a pretty good list of what to check etc.. so I'm assuming you know of a couple of ways to check the coil.. so check it.

- Make sure you have a good battery, don't keep fooling around with the maypop and recharging.

- If you have one, put the stock airflow meter back on the car properly connected and see how it runs or if the issue persists.

- Get a correct set of (non-Platinum) Bosch or NGK plugs.. in my opinion nothing else seems to work right.

- No baseline tune and self learning here. Motronic relies on simple sensors and its DME.. the only parameters you'll really change will be with the use of the chip in the DME and/or that autothority unit.

Typically, the Autothority Mass flow conversion was used with a custom chip..
- you need to check the DME to see if it at least looks like its been opened.. if so. Open and check to see if it has an Autothority chip installed.. if it does, make sure it is properly seated. If not, this could be part of the problem and Steve Wong (the chip dude) should be able to help you.