For a stock 2000 EX. I just found out the shop the previous owner took it to put in Champion .
I was reading that the "V-Power Spark Plug; ZFR5F-11" are OEM.
I didn't see any mention of whether the "NGK Iridium IX Series; ZFR5FIX-11" or "NGK Laser Series Platinum Plug; PZFR5F-11" or "NGK G-Power Single Platinum; ZFR5FGP" might be better or worse. They are more expensive but if they yield better fuel economy it would be worth it.
Does anyone have any experience with these or recommendations?
Vpower are your best bang-for-your-buck as far as NGK plugs [just ordered 4 myself lol].
As far as what Honda recommends, snag a spark plug gap tool for $1 at autozone/ advanced auto parts and make sure your plugs are 0.044 gap before installing, thats the factory spec for gap. There is no specific style of plug recommended per Honda.
iridium are not good? well i do have a 2000 si with a gsr
Nothing wrong with iridium's, for the most part I never noticed a gain. ONe thing I am not crazy about iridium's that the electrode seems to build up more then the standard plug, over time that is unless you change them strictly at say 30k miles.
Thanks for everyone's input. From the sound of it there is no significant/noticeable gain in using the more expensive plugs. It looks like the NGK V-Power Spark Plugs; ZFR5F-11 are the winner. Thanks again.
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