4-way spitfire SPARK PLUGS
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  1. #1
    hell no h2o beeman has not yet proved knowledgeable beeman's Avatar
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    Default Bosch 4-way SPARK PLUGS

    Hi ppl,
    Anyone using these kinds of spark plugs. They are available from Bosch over here. This guy was telling me that this spark plug has four contact points rather than one and since normal spark plugs also tend to mis-fire over time these will not as they automatically detect which one is working and which one is not.

    My question is is this true??
    Is this usefull to an engine??
    Since they are five times the cost are they worth it??
    Last edited by beeman; 01-27-2005 at 09:51 AM.
    doing my thing

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  3. #2
    2003 Elantra GT Charles Bisel has not yet proved knowledgeable Charles Bisel's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS

    I'm pretty sure that's just a gimmick.

    Your best bet is to stick with NGK Platinums -- you'll get 100,000 miles out of them, they're a well-known brand with a good reputation, and I'm pretty sure that's what comes with these cars from the factory.

  4. #3
    Junior Member ABQelantra has not yet proved knowledgeable
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    Default Re: 4-way spitfire SPARK PLUGS

    that would be correct he was selling you on some b.s.

    by misfire over time he neglected to tell you that he meant a long time... lmao


    he made it sound as if these were the spark plugs of the future by saying they will automaticly detect which are working. by using simple electronics knowledge the spark will find the path of least resistance which means it will choose one of the 4 post it has to choose from it doesnt mean the other three arent working

    all in all no they are not worth it and you should go beat the guy who tried to sell them to you with a rusty lead pipe

  5. #4
    Ultimate Post Whore FordFasteRR can identify a wrench FordFasteRR's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS

    yeah, save your money and just buy the regular ngk .. BKR5E-11 (or if you feel fancy, get the platinum NGK's)



    good luck!

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    Ultimate Post Whore sed has not yet proved knowledgeable sed's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS

    why have 4 contacts? I'm gonna make a plug with 8!!!!!!!!!!!!!!

    shawn

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    EXD Pro Member 04 elantra cvvt has not yet proved knowledgeable 04 elantra cvvt's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS

    I have sold auto parts for about 10 years now, and I can tell you that Bosch makes some really good products, but... Their spark plugs are not one of them. Everytime I see somone come in with any Bosch plug in their car, it runs like crap. In fact, it runs worse after they install them than it did when they had their original 80k mile plugs in the car. So, the reccomendation to save your money and get the NGK plugs is good. I would also reccomend the Denso Iridium plugs. They really work well.

  8. #7
    Too much time spent here. JacksonJ has not yet proved knowledgeable JacksonJ's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS



    I had Bosch plugs and my car ran like crap. I thought it was the wires, I replaced the wires with Bosch wires and it became worse. I eventually got it misfiring real bad and thought it was the timing belt and replaced that. It didn't help, I replaced the bosch plugs with NGK and my car runs perfect.
    “Being a guy doesn’t mean that we have to admit to our Foibles, but rather come up with better excuses” - Colin Mochrie

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    - Bnystrom has not yet proved knowledgeable
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    Default Re: 4-way spitfire SPARK PLUGS

    I've used Bosch plugs in several cars and never had any problems with them. I even went brain dead once and tried the Bosch Plus 4's that you're referring to (Splitfire plugs are something else), but didn't notice any improvement over standard platinum plugs. I've used NGK's and they work well, but I can't honestly say that there's any difference. Come to think of it, even garden variety Champions got the job done. I've used Bosch and NGK spiral core wires and they were fine, too. The only aftermarket electrical parts I've ever have problems with were distributor caps, but that's not an issue with the Elantra.

    The scoop on plugs is this:

    The best performing plugs (electrically speaking) are copper plugs and they're also the least expensive. However, they have the shortest life (15-30K miles) and you need to re-gap them periodically to get the most life out of them. Platinum plugs can last twice that and iridium plugs even longer, but they cost progressively more. So, it all depends on what you're looking for. If you don't mind changing plugs more often, copper are great and cost less in the long run. If you prefer to "set it and forget it" and are willing to pay for the convenience, iridiums are the way to go.

    As for multiple electrodes (Bosch 2 and 4 electrode models) and forked electrodes (Splitfire), they're basically just gimmicks to extract a few more dollars out of your wallet. Anyone else out there remember JC Whitney "Fire Injectors"?

    No, I never tried those.
    Last edited by Bnystrom; 01-26-2005 at 01:25 PM.

  10. #9
    hell no h2o beeman has not yet proved knowledgeable beeman's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS

    Hey......Bnystrom can you let me know the model number for the bosch splitfire plugs or any website which i can see the pricing from.
    Also i will post a picture of the plugs to show you the ones that i mean......

    Unfortunately in india the quality of fuel is not that good so we have to quite regularly clean the spark plugs as after 10,000miles a lot of deposits get stuck on them. So i've been thinking of a long term solution to that......and these four way things seemed like a good idea.................also they can't be fake because they come directly from Mico Bosch india (Bosch worldwide)..........

    NGK unfortunately is non-existent over here.............
    doing my thing

  11. #10

    Default Re: 4-way spitfire SPARK PLUGS

    I've been using Bosch +4 spark plugs for 10K now in my Elantra GT. Nothing but praise for them. While it is true that they do not work well with all cars, the Elantra has no problem with them. The title of this thread should be changed because they have nothing to do with Splitfire junk.

    Beeman Bosch +4 start self-cleaning at a lower temp than other plugs so they might be a good pick for your application.
    Last edited by 5port; 01-27-2005 at 08:16 AM.

  12. #11
    Junior Member DocRxGLS has not yet proved knowledgeable DocRxGLS's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS

    I also have the Bosch Plat. +4's in my car for like 20K now, and I have not had a problem with them. I really like them. I will probably be checking them in the next few weeks to see how they are doing (I just went over 25K), and then decide to get NGK IX Iridiums for a comparison.

    As far as multiple grounds go, having more than 1 path seems like a good idea to me. I mean you do not get 4 sparks, but the spark will travel the path of least resistance. If one of the grounds is kind of corroded, having another option has got to be better than not. The way the plug is designed, the flame kernal is exposed, and should result in better combustion of fuel in the cyclinder.

    I believe after this topic was beat to death on the old forum, the outcome was split. Some of us really liked the +4's, others did not and went Denso or NGK. Even Jay said he felt like the car hand a little more get up and go with the +4's. One thing that came up was fuel economy (FE). Many people said after switching to the +4's that there FE went down - mine included. After having them in my car for a while, I got 38 MPG on the way down to Orlando for our vacation. The FE coming back, not quite as good (~36), and from outside Atlanta back to Knoxville - 39.2 MPG - best to date. Again, won't be able to compare until I get the Iridium plugs. I also have a more free flowing exhaust now since that trip, so, the results should be interesting.
    Last edited by DocRxGLS; 01-27-2005 at 09:25 AM.
    03' Blk GLS 5-spd, 2¼ CB w/ aerochamber muffler,Cust Grnd wires, K&N panel filter, NGK wires & IX iridium plugs, TWM shifter, 19.2mm sway bar, 15" Sonata alloys, Tibby pedals, OEM spoiler, RRM strut bar, chrome handles, door sills, Indiglo gauges, PCV bypass filter, Slave cycl. mod, 15% tint

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    hell no h2o beeman has not yet proved knowledgeable beeman's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS

    yup i changed the thread title

    Gosh this is getting more confusing than ever..........so DocRxGLS "what you are essentially saying is that it will be more of a trial and error method in this case.............

    Better combustion and therefore better fuel economy??
    doing my thing

  14. #13
    Former 01 GLS XD owner mrhoaf has not yet proved knowledgeable mrhoaf's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS

    I bought Bosch plantums when I replaced my plugs around 60k.... I replaced the wires at the same time and made sure to gap them properly. A few thousand miles later my car started to run like crap...... The dealership said that the plugs were the problem..... that alot of people were having problems with those.... I had them go ahead and replace the plugs since I had already paid them $70 for the diagnostic, so I don't know what they replaced them with. The car has run great since.... Either they were bad, or Advance sold me the wrong ones....


    Traded in the XD on 6/24/06 for a 06 VW Rabbit 3-door

  15. #14
    Junior Member DocRxGLS has not yet proved knowledgeable DocRxGLS's Avatar
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    Default Re: 4-way spitfire SPARK PLUGS

    Well, first of all, the Bosch Platinum +2's & +4's are pregapped from the factory. So regapping is not necessary. This is my third set in 3 different vehicles - an Izusu, Geo, and now my Hyundai. Not a problem in any of them.

    Beeman, as far as I know, unburned fuel in the cyclinder can lead to engine deposits, so burning up all the fuel in the cyclinder is a good thing. I was just saying of the people that had the plugs and liked them, their fuel economy seemed to go down. This maybe like any other mod you do that you may perceive gives you more power - in that case people drive faster or push their car harder, thus burning more fuel. It seems though with my trip to FL, I may have discredited that theory. However, if I do get some Iridium plugs, and my FE goes up an additional MPG or two, it may have been the plugs.
    03' Blk GLS 5-spd, 2¼ CB w/ aerochamber muffler,Cust Grnd wires, K&N panel filter, NGK wires & IX iridium plugs, TWM shifter, 19.2mm sway bar, 15" Sonata alloys, Tibby pedals, OEM spoiler, RRM strut bar, chrome handles, door sills, Indiglo gauges, PCV bypass filter, Slave cycl. mod, 15% tint

  16. #15

    Default Re: 4-way spitfire SPARK PLUGS

    Regapping +4s could actually DAMAGE them.
    Last edited by 5port; 01-27-2005 at 12:46 PM.

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