Spark Plugs, double platinum, silver or iridium

[mdtoro]

I have a 2.0t, A6 C7 2013

Looks like stock are double platinum.
On ECS Tuning I see references for better performance from Iridium and Silver plugs. I would assume these may not last as long? Not sure if coil packs would need an upgrade if upgrading?


Anyone have experience with Iridium or Silver?

Brisk Silver states:
Brisk Silver Racing Spark Plugs are the best solution for high performance and racing engines. Silver Spark Plugs provide many unique and beneficial characteristics, Silver is taking spark plug technology to a whole new level, here are many reasons why our Brisk Silver Racing Spark Plugs are beneficial for your engines performance. Silver is the best conductor of any metal! It conducts 560% more electricity & 481% more heat than Platinum, and 276% more electricity & 177% more heat than Iridium.

Too add a bit of confusion, Brisk, has a stock heat range with a projected or non-projected tip...

[15 Phantom S6]

I'm just using my own logic here and I'm not an engineer or anything but I think that the spark plug just displaces the energy provided by the coil pack. Not sure just swapping out the electrode material is going to give you night and day differences.. I think using the biggest gap allowable and matching the correct heat range to the amount of boost yo're pushing is more important.. I could be wrong, but that's my take on it..

I've had alot of experience with iridium and platinum and they last alot longer than copper, but I can't say I had more power due to the material used, just a different life span..

Seems if silver was that much better, all the big spark plug makers would be doing it at some capacity.. Remember those "Splitfire" plugs form the 90's? Great marketing but not sure it did anything..

[Valpo A7]

Most car manufactures that spec iridium plugs will give a 100,000 mile change interval. Jeep still uses copper for the most part with a 4
30,000 mile change interval although they will typically still be working in the 45,000-50,000 mile range but they will be burned open quite a bit. The iridiums don’t really open up much like copper plugs do.

[Audisthesia]

Iridium plugs will last the longest. Consider the labor involved to change the plugs in your vehicle.. And you may decide the iridium is well worth it.

Now, as far as power/performance gains.... I don't subscribe to that BS with spark plugs, any gains there are statistical and not real world noticeable. Anyone remember splitfire plugs?

[bahula03]

Do yourself a favor and don't try to solve a problem that doesn't exist. Unless you're tuning the car, no reason to use anything other than stock, especially when OE VW-branded plugs are about $60 every 40k and easy as can be to replace.

[Riker]

I've had great life out of iridium on my prior tuner vehicle, I'm not sure what is stock on the S7 but I will be switching to iridium or a better equivalent.

Don't expect power gains out of spark plugs, merely consistency; which is what you want. The biggest factor here is the heat range, if you purchase a "colder" plug for instance (common for tuned vehicles depending on thresholds) on a stock tune you may be putting your spark plugs out of ideal operating range.

[gk1]

FWIW at my 35k service....when they changed plugs...Audi had already updated the OE S6/S7 plug from the original 079-905-626-G to the RS7 plugs 06K-905-601-M
They are an NGK plug. I believe this is also the RS3 plug and would probably be the weapon of choice on a tuned 2.0T as well.
Otherwise, as others have said don't try to solve a problem that doesn't really exist.

[jazzyjay18]

If you are a DIYer and moding your car, you will checking or changing often so you can easily go copper. In my race car I change every 10 passes so highend does not make sense but if you what 100k service life get the good stuff