Best plugs for 5.4 Procharger Setup?
Senior Member
Joined: Oct 2005
Posts: 618
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From: Spring/Woodlands, Tx.
Hey guys, A couple of months ago I did a procharger on my 2002 5.4 and it's been running great with one exception. Ever since I did regular copper plugs (gapped at .038) it has been shuddering at idle. Really hard to explain but it feels like the engine is missing randomly, but it never throws a code. It never did this with the factory platinums, but obviously platinum + boost = no no.
Advice?
Advice?
truck runs great! but when i come to a stop or idle it has a little shake every so often. no codes no real issues but its very random.
my truck is turbocharged and im running ngk-tr6's gapped at .035
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Member
Joined: Sep 2008
Posts: 80
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From: New York
Yeah you might be right. I was talking to my tuner today, putting 42# injectors in with a 90mm Lightning MAF and shes going on the dyno in 2 weeks. I'm also gonna go with the TR6 plugs to go one range cooler for the boost so that should help as well, but the tune will do wonders, FMU setup runs like **** in the cold lol.