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Spark plugs and MPG

posted by  Palmer on  Fri Jan 28 10:54 CST 2005
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last visit: Fri Jan 18 15:37 CST 2013
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Hi all,
Has anyone used the Bosch 4-electrode spark plugs in their b230f? I used them in my Saab 9000NA and got a 1-2 mpg boost, but the some of the guys on Saabnet seemed to think it blasphemy to use anything but NGK. Any experience would be greatly appreciated.

Palmer
--
1994 940na, 1980 265 V8








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    Spark plugs and MPG

    posted by  Irollturbo on  Sat Jan 29 05:12 CST 2005
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    last visit: Sat Sep 6 14:36 CST 2014
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    I picked up a set when I was trying to debug an idle problem. In the end the idle problem was a broken flame trap. Anyway, on a long highway trip in back to back tests against a Bosch Super plug, the +4s seemed to give me a 0.5 MPG increase. Of course factors like weather, speed, and even fuel quality can also bump your mileage around by even more than that. I think the conditions were reasonably similar when I did the compare.

    Right now the Supers are back in and I will use the +4s after I get some more wear on those.








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    Spark plugs and MPG

    posted by  NJC on  Fri Jan 28 15:28 CST 2005
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    last visit: Sun Jul 24 13:42 CST 2011
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    I don't have experience with this plug nor have read anything about it but the concept seems to make sense. The ability to increase the combustibility of the a/f mixture would be a good thing; I don't know if that is actually happening though.
    --
    Norm Cook Vancouver BC; 1989 745T 204,000KM








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      Spark plugs and MPG

      posted by  poolman on  Fri Jan 28 23:32 CST 2005
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      last visit: Sun Dec 26 02:03 CST 2010
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      I'm going to admit it now, every once in a while I go off on the new stuff that comes out, when the split fire plugs came out, had to have em, know what they were junk. I have run the bosh plugs you describe in my 960 for years and they are good plugs. Now with that said, I have gone off again, this time it's the E3 spark plug, bought them from J.C. Whitney--only sorce for them right now. Put these little jewels on the car and ya know what , they have done everything they said they would on their website, Smoothest burn I have ever seen, turn the key and the engine jumps to life, after 3k on them when like siting at a stop light and you get that occasional bump of a slight missfire, thats no more,if you did'nt know the engine was running you couldn't tell if you in the passengers seat and almost like that in the drivers seat.
      I'm going off again on this product and order a set for my 5 series BMW, with that said check out the E3 Spark Plug website and decide for yourselves.
      Good Luck
      Poolman







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