Spark Plugs for the 2.0T FSI BKR7EIX

(Last updated 2/3/2011) Please note that the a new oem spark plug has been recently specified for the 2.0 engines : 06H 905 601 A. Click here for more information

These are one step cooler than the older plugs, so it seems that these NGK’s are the new corrected heat range anyway.

These NGK iridium plugs are the smoothest running spark plugs I have tried in my car so far.  I don’t know what it is about them but they feel great!  This is all seat of the pants impressions, but they feel much better than the BKR6EIX numbers that I had in there before.  Those were the stock heat range by the way.

The BKR7EIX plugs are one heat range cooler than the stock plugs.  So far it seems to complement the stage 1 tune.  My car has ran on these plugs so far:

stock heat range copper plugs (BKR6E I believe) – car seemed to hate them, gas mileage down, power was meh

stock heat range NGK iridiums (BKR6EIX) – car was fine with them, I used them for 30,000 miles

stock VW Bosch’s – car ran just fine, if not a little better than the NGK’s above

one heat range cooler NGK’s (BKR7EIX) – car seems to love these, just a feeling that I cannot quantify, smoother acceleration, better   midrange power

My car is chipped, which may account for why it wants a cooler plug although APR recommends stock heat range plugs.  Can’t hurt to try them though if you need new plugs and have a tune.

The plugs are NGK BKR7EIX (note, no -11 suffix, that would be the wrong gap size)

The stock number is 2667


stock photo awesomeness

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Copper Spark Plugs In The 2.0T FSI

NGK BKR6EIX

NGK BKR6EIX

So, upon hearing the “good things” about the performance of copper plugs versus platinum and iridium plugs, I decided to get a set.  My stock plugs were in need of replacements and at 10 bucks for a set of NGK coppers, I decided that it would be worth a try.  The stock heat range copper plugs are the NGK BKR6E (stock #6962).  I popped them in and they felt great.  Just like a new set of plugs should.  However, over the next 1000 miles or so that I had them on, I noticed my mileage beginning to go down.  I usually average about 28mpg on the highway and with the coppers it went down to about 24 and below.

I don’t have any explanations for why it happened.  This was on my daily commute as well.  The only thing I can think of right now is the firing end design.  Both the iridium and the stock platinum plug are fine wire designs.  Don’t ask me for an explanation as to why it would affect the combustion, it shouldn’t make that big of a difference.  But I saw it.  The tank range went down a pretty good amount.

Power was pretty much exactly the same, except with this seemingly terrible mileage.  I didn’t think it was the spark plugs until I decided to replace them with the NGK iridium fine wire equivalent, BKR6EIX.  My mileage went back to my normal 28-29 highway.

The copper plugs looked like they were running very well when I pulled them.  No deposits, even coloration, about as pretty as a spark plug could look.  Maybe the coil packs just didn’t like them or something.

*The weather has been getting cooler recently, and mileage has gone up some more.  This engine does not like the summer.

5/24/2011

The BKR6E may not be exactly the stock heat range.  The stock heat range may actually be a “7” for NGK plugs.  Maybe BKR7E is the appropriate plug.