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Discussion Starter #1
I am a bpu + car with fmic,d-pipe,intake,b-controller,exhaust,fcd
last sept right before nopi i put in denso iridium plugs and just recently i have noticed a litlle problem at high rpms. My friend, matt chambers, said its probably the plugs just fowled out because i am running a little rich if anyoone has had any problems with these plugs after about 6 monthes of use please let me know. i also do not have any sort of fuel management by the way. if anybody has suggestions let me know. oh yeah my boost is set about 19 psi but im only hitting 14.1 thanks guys
 

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Moderator, Live life to the fulllest
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Do a search because i asked what plugs are the best to use and i know the NGKs are the best but there are two you should try so just search for it.
John
 

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If it is not the plugs the fcd might be the cause. Some posts have mentioned how it dosen't measure up to par. Trying everything though before you change the fcd (last option)
 
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