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Title: Misfire Under Boost Post by: Zacklanduyt on June 17, 2013, 05:23:18 PM Hey guys I am running a stage 2+ which spikes to 19psi and tapers out to about 17-18psi, once I build boost I have a steady misfire that will usually last about 2000rpm and then clear up and pull hard, I have double platinum plugs gapped to about .030 everything else is in working order, what kind of plugs/gap do you guys run? I am aware that it could be coils but any suggestion so I don't have to replace them just yet, also the misfire is definitely random throwing codes for cyl. 2,3,4,5 and 6 s.o coils could be weak but it seems unlikely that they would all go at once, also the misfire didn't start until after I replaced the plugs, and I pulled them all to check for cracks etc. and everything looked good. Thanks for any help you guys can give, also car is a 2001.5 Audi S4
Title: Re: Misfire Under Boost Post by: masterj on June 17, 2013, 11:40:16 PM Gap them to .028 or even .022
Title: Re: Misfire Under Boost Post by: rnagy86 on June 17, 2013, 11:53:32 PM F5DP0R and be done with it
Title: Re: Misfire Under Boost Post by: ddillenger on June 17, 2013, 11:57:14 PM BKR7E (or EIX if you're too lazy to replace them every other oil change). .025-.028
Title: Re: Misfire Under Boost Post by: professor on June 18, 2013, 02:22:56 AM Exhaust manifold is stock?
If yes gap the spark plugs or use the f5dp0r and check again. Title: Re: Misfire Under Boost Post by: QuattroEd on June 18, 2013, 09:08:09 PM whats your AFR in this zone?
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