A6 / S6 (C5 Platform) Discussion Discussion forum for the C5 Audi A6 and S6 produced from 1998-2004

which spark plugs?

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Old 05-04-2006, 12:23 PM
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Default which spark plugs?

I remember there was some debate over to platinum or not... Any specific recomendation would be greatly appreciated. (nomex underware on). Thanks!
Old 05-04-2006, 12:49 PM
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Default NGK - Iridium IX®

<center><img src="http://www.ngksparkplugs.com/images/page_img/iridiumix_banner.jpg"></center><p>I am going to be replacing mine soon. I am pretty sure these are the ones I will be going for if not, it will def. be a NGK brand though. I have heard lots of good things about them.
------------------------------------------
Iridium IX®
The Spark Plug Serious Enthusiasts Rely On
NGK Spark Plugs - Iridium IX

Iridium IX Spark Plugs are the most technologically advanced high performance plugs available. Featuring a 0.6 mm iridium center electrode tip, they offer superior ignitability without sacrificing durability. The tapered ground electrode increases flame kernel expansion, while the superior heat range design is ideally suited to the demands of high performance environments. Specially designed to meet the needs of serious enthusiasts, Iridium IX Spark Plugs offer outstanding acceleration, high fuel efficiency and long life. When you demand the most from your engine, rely on the proven performance of NGK Iridium IX Spark Plugs.

NGK's new Iridium IX is the personification of these qualities and takes premium performance spark plugs to a new level. A level that is expected from the world leader in spark plugs.

The future has never looked so good.
NGK Spark Plugs - Iridium IX<ul><li><a href="http://www.ngksparkplugs.com/apps/car_truck_suv/default.asp?nav=60000&amp;country=">NGK Spark Plug Finder</a></li></ul>
Old 05-04-2006, 01:31 PM
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Default Re: NGK - Iridium IX®

2 weeks ago I replaced the spark plugs with the NGK Iridiums IX. Part No. # 6418. I havent gained any performance although it seems to be accelerating smoother.
Old 05-04-2006, 01:33 PM
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I don't expect to "gain" performance....just better than stock plugs...thats all :P
Old 05-04-2006, 05:40 PM
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Installed Denso Iridium's in April, $11.99 ea. from Autozone
Old 05-05-2006, 05:19 AM
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2nd. No problems with Denso iridiums here.
Old 05-05-2006, 10:39 AM
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Default I put a set of these in my Honda (well, Acura CL actually) and they run fine and cost 1/2 of the NGK

Platinum plugs. I would recommend. And if you think that you are going to get a performance gain on a stock engine just by changing plugs, go buy a Tornado to put into your intake as well - cause it ain't gonna happen!
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