GODZILLA-GTR Posted August 3, 2011 Share Posted August 3, 2011 be ur coilpacks dude, tape them or get some splitfires Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-5947642 Share on other sites More sharing options...
dori34 Posted August 3, 2011 Share Posted August 3, 2011 i got JJR coilpacks found 1 was faulty during tune and missfired at 3500rpm so i replaced that with a stock one. it only happens sometimes as well but i will tape them up and see if that fixes it. car does also run a little rough off boost. alot of ppl in here are running the #7s in a rb25 with over 16psi of boost so won't hurt to give it a shot. Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-5947687 Share on other sites More sharing options...
Galois Posted August 3, 2011 Share Posted August 3, 2011 Given that the 6 heat range is for fairly stock, an you've got a good bit more power, 7's are probably the way to go. Also the taping and silicon-ing only work sometimes, if it's a case issue not a coil issue (mine was the latter). Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-5947702 Share on other sites More sharing options...
dori34 Posted August 3, 2011 Share Posted August 3, 2011 upon visual inspection, the case looks fine (even with the faulty pack) so will be the coil issue if it does happen again. will just bin these and get splits Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-5947717 Share on other sites More sharing options...
Galois Posted August 3, 2011 Share Posted August 3, 2011 The cracks can be hairline, so they can be hard to see. Yellow jackets are cheaper, as good as splitfires and have a 2 year warranty. Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-5948424 Share on other sites More sharing options...
dori34 Posted August 4, 2011 Share Posted August 4, 2011 last i checked, there wasnt any yellow jackets to suit the neo. i hope they stock them now. Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-5949254 Share on other sites More sharing options...
Galois Posted August 4, 2011 Share Posted August 4, 2011 I ordered mine over a year ago for the r34 (now sold) Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-5950486 Share on other sites More sharing options...
manuel Posted September 21, 2011 Share Posted September 21, 2011 (edited) Good coils will help to run bigger gaps in plugs bigger gaps =better performance. My bcp7s shit themselves after 6months of driving, gap was 1.1, misfiring like crazy after 4000rpm, replaced them with new plugs and problems disappeared Cooper plugs break down quickly with high boost applications I Edited September 21, 2011 by manuel Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-6026087 Share on other sites More sharing options...
SargeRX8 Posted September 21, 2011 Share Posted September 21, 2011 Good coils will help to run bigger gaps in plugs bigger gaps =better performance. My bcp7s shit themselves after 6months of driving, gap was 1.1, misfiring like crazy after 4000rpm, replaced them with new plugs and problems disappeared Cooper plugs break down quickly with high boost applications I What turbo and how much boost with which coils? I run 14psi and get blown out with my yellow jackets. they have always been like that but at .8 they are fine. My coils failed on me on 19psi so I got some pretty bad detonation. I wish I can run a 1.1 gap. Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-6026401 Share on other sites More sharing options...
manuel Posted September 22, 2011 Share Posted September 22, 2011 What turbo and how much boost with which coils? I run 14psi and get blown out with my yellow jackets. they have always been like that but at .8 they are fine. My coils failed on me on 19psi so I got some pretty bad detonation. I wish I can run a 1.1 gap. GCG high flow 255kw atw 16psi Splitfires standard airbox Link to comment https://www.sau.com.au/forums/topic/104405-spark-plugs/page/18/#findComment-6027419 Share on other sites More sharing options...
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