Okay, need to put some new plugs in the 408. It will be seeing 15 psi. What plugs are you guys running in FI application, heat range/part number will be very helpful.
Okay, need to put some new plugs in the 408. It will be seeing 15 psi. What plugs are you guys running in FI application, heat range/part number will be very helpful.
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
Bosch E3's
04 RCSB 5.3, Homemade 80mm FM, TU1, TH400
i run a BR9ef
01 Silverado
Tr6 on 18 psi
jk, im in the middle of my build and i have br7ef's in there now from the nitrous setup so i will prolly just stay there, unless someone thinks i need a colder plug
04 RCSB 5.3, Homemade 80mm FM, TU1, TH400
Br7ef here
stock number 3346
2002 Lightning - GT headed 5.5Litre w/ Twin 7665s
2002 Silverado - 427Lsx w/ Twin gt4202s
2010 Silverado crewcab Z71 - 5.3litre w/ procharger
2000 Wrangler - 5.3litre with some stance
2014 Xsport- 3.5 Eco boost
412 Motorsports
it ain't that I'm too big to listen to the rumors, It's just that I'm too damn big to pay attention to 'em..That's the difference
Cool, thanks for all the info. Between here and LS1tech it seems that the BR7EF plug is the most popular so I went with it. Factory gap on them came out to be .026" so I left them alone and dropped them straight in. Good news, my miss is gone. Number 8 spark plug had a split the length of the ceramic. Sure made a difference having it hit on all eight cylinders. Thanks Allen for the tip to turn on the misfire detection to find the culprit. Did I say I still can't program with HPTuners software?
See my truck data in the "My Garage" section here... http://www.ls1truck.com/forums/my-ga...tml#post191709
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