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  • Spark Plugs

    Guys, i am running with 209hp on a ds3 155bhp (downpipe, filter and ecu remap). I am looking for new spark plugs, what do you recommend ? Some friends of mine
    are using the ones from evo X (NGK ILKR8E6) i am from Brazil, and dont have the option to buy the ones from ds3r (ILZKR8C-8G) is not available to aftermarket suppliers

  • #2
    Out of interest why are you looking to change your spark plugs? The stock platinum ones should be fine I think.
    ///DStyle+ VTi 120 in white/black/red ///
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    • #3
      Bens, i was trying to follow the rule of thumb that for each more 50hp, you get a 1 degree cooler spark plug.

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      • #4
        Look at this very nice post from Czar about this topic:
        http://www.ds3club.co.uk/showthread....ll=1#post73335
        Citroën DS³ // THP 155 // Body Ruby Red // Roof Moondust
        DS³R Speedometer // 19" OEM Cairns // KW V3 Coilovers

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        • #5
          Wow that's awesome, Czar is a legend. So the TL;DR is you should only really need to upgrade to copper/silver once at 230+ and working it hard, and then they need servicing more often too. Iridium plugs only increase time between replacements.
          ///DStyle+ VTi 120 in white/black/red ///
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          • #6
            Amazing guide !!! Bens, czar talks about one step colder only if you have more than 230bhp, but i understand that anyone could use a cooper/silver spark plugs. He didnt mention
            which silver/copper spark plugs we could use on Ds. Anyone knows ?

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            • #7
              Guys, i think i founded ! After some search, i think the best silver spark plug option is the brisk QR12LS

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              • #8
                Sorry, i put the wrong part number! The correct brisk it is the MR12YS

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                • #9
                  Those will definitely future-proof your motor if you want to add more power i.e. the frankenturbo you mentioned, just make sure the gap is correct

                  p.s. you may want to look into a bigger intercooler as the stock one is not too efficient above normal power and has quite high temperatures
                  ///DStyle+ VTi 120 in white/black/red ///
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                  • #10
                    Do not use the Brisk one. Mini owners used them and had misfiring. Czar suggest to use the NGK LKR8AP (used by the E60 M5 and E90 M3)
                    Citroën DS³ // THP 155 // Body Ruby Red // Roof Moondust
                    DS³R Speedometer // 19" OEM Cairns // KW V3 Coilovers

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                    • #11
                      Wonder what NGK ones the Peugeot RCZ R and the 308 R use as they produce 270bhp standard, and they are THP engines like DS3 versions.

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                      • #12
                        Shiro, what is the gap that you are using with this ones ? It cames with .035" (0.9mm). I saw the hex of this plugs are 16mm, there is any difficulty to change then ?

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                        • #13
                          I was reading the specs of the evo x plugs (ILKR8E6) What ll be the diference of this LKR8AP ? The two have the cooper core, the specs are very similar.

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                          • #14
                            Don't know, didn't used them because my engine is still stock. But if it will fit the Mini, it will fit the THP too :rolleyes:
                            You can also try the Evo X one and report if it's working

                            Edit: Searched for both and found this infos:
                            LKR8AP: Platinum, Gap: .035" (0.9mm), Source
                            ILKR8E6: Iridium, Gap: .024" (0.6mm), Source
                            Last edited by Shiro; 21-01-2017, 18:13.
                            Citroën DS³ // THP 155 // Body Ruby Red // Roof Moondust
                            DS³R Speedometer // 19" OEM Cairns // KW V3 Coilovers

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                            • #15
                              Some friends use the ILKR8E6 with .7mm gap. I think this .9mm from the LKR8AP could cause misfire.

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