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E36General discussion and technical help for (E36) 1992-1999 3 series cars. 318, 323, 325, 328.
About to change out my spark plugs for the first time (Bosch OE dual electrode). And I got to thinking which train of thought is correct: Will the new ones tax my electrical system more because they're newer, or are the old ones taxing it more right now because they're old and inefficient? I'm expecting some sort of change since my car is up there in mileage.
Your old plugs are taxing your ignition system because of resistance rises as they wear. After putting in new plugs although they won't be "taxing" your ignition, the addition might amplify any (if any) existing problems. I think you'll notice faster starts, quicker response and better mileage
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Your Ride: 2004 Acura TL
I did platinum +4s a little while back... caused misfire problems and I immediately cracked a couple of them within a week. BMW shop told me not to use platinums as the 328i (e36) doesnt create enough spark to warrant their use. OEM copper is the way to go, I am told.
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Yea again it's what the car is designed for. Mine came factory with the 4s and they work great. Friends who have tried to save a $ went with coppers only to have them last like 15k before noticing mileage drop and lags. But I've heard the similar to what you said, sometimes upgrading isn't feasible (mostly hype from plug mfgrs)