There are'nt any way to know if its good or not, like a batch nr or so? I bought mine over a year ago, but maybe I just stick to my NKG plugs then.. hmm
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So being controversial for a moment why has not one tuner mentioned anything about known plug issues until this point? seems odd that there is a QA issue...has anyone sent anything to bosch to review and have they responded privately or publically? not suggesting that any tuner had a rihht to inform but would be useful to know if pstterns on failure are emerging... genuinely unsure which plugs to go for nowsigpic
1992 3b S2 Coupe
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When I first started running the gt30r I kept having missfire issues. Spark leads kept blowing out the rocker cover and I finally diagnosed it to the plugs where they where spinning loosely within the metal nut. However this only became apparent when they were taken out and warm. When cold the plug appeared 100% to visual inspection.
Did this to 2 out of 5. So replaced all 5 to be safe and it did it again. Both batches from gsf. So thought strange maybe the f5dpor from bosch packaging is a different variant from the audi one. So bought a set from Audi and suffered the same issue. 15 plugs binned within 2 weeks. So I experimented with bkr7eix 8eix and 9eix. In winter the car was happiest with 7's in the summer 8's on the race track 9's.UrS6 Stroker + HTA3586 =
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Probably made in China. If the NHS can buy fake drugs...
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Originally posted by RWD19T View PostWhen I first started running the gt30r I kept having missfire issues. Spark leads kept blowing out the rocker cover and I finally diagnosed it to the plugs where they where spinning loosely within the metal nut. However this only became apparent when they were taken out and warm. When cold the plug appeared 100% to visual inspection.
Did this to 2 out of 5. So replaced all 5 to be safe and it did it again. Both batches from gsf. So thought strange maybe the f5dpor from bosch packaging is a different variant from the audi one. So bought a set from Audi and suffered the same issue. 15 plugs binned within 2 weeks. So I experimented with bkr7eix 8eix and 9eix. In winter the car was happiest with 7's in the summer 8's on the race track 9's.Last edited by Nik0las; 17 February 2012, 11:48.
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Originally posted by Nik0las View PostExactly same issue here. If you drive the car every day in traffic conditions with f5dpor probably you will not notice any problem. But when they become hot start to spin within the metal nut with lats of misfire. I saw this on my car on dyno mapping.
I just binned 6 F5DP0R's out of my RS4 as well, fitted by the previous owner...
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Originally posted by fridtjov-audirs2 View PostIs problem with F5DPOR the same direct from audi dealers?
The NGK BKR-8IEX that I am using seem pretty good so far and were reasonably priced (IIRC ~£4 each)
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Originally posted by Thecrispynoodle View PostThis is really interesting. I've recently done a 2.0 TFSI conversion and was planning to put new plugs in soon as old ones have done about 20,000 miles. So would FR5DP be the way to go with these coils also?
For now I would avoid all spark plugs that reads Bosch on them.
Audi UrS4 Avant 2.5 20vt - twincharged - Project
Audi 80q B4 Sedan 2.2 20vt - Daily user
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