* Year of manufacture: The engine's computer system and specifications changed over the years the G20 was produced.
* Engine modifications: Any aftermarket modifications (camshaft, intake, exhaust, etc.) will significantly alter ideal timing.
* Fuel type: The type of gasoline used will impact combustion.
* Engine condition: Worn components can affect ignition timing needs.
Therefore, you cannot find a universally correct answer. You need to consult your vehicle's specific repair manual (often available online or from a parts store) or a reliable source specific to your G20's year and engine specifications.
For a stock engine, the timing is typically controlled by the engine's computer (ECM), and any adjustment would require specialized tools and knowledge. Attempting to adjust ignition timing without proper understanding can seriously damage your engine. If you suspect an ignition timing issue, it's best to consult a qualified mechanic.
