Hi,
did any of you try that spark plug on his HO Turbo?
Sparkplugs.com - Application Search Results
I made good experiences on spark plugs with 4 mass electrodes in non aspirated engines. Smoother idling, quicker throttle response.
Bosch is recommending this 4514 only for the n/a 2.4 engine, but you can use almost every spark plug for both engines, and gapping should not be a problem with these plugs
Any volunteers?
Georg