3.0T stage 2 - spark plug recommendation?

[Devil_Inside]

I'm about to go APR stage 2 (SC pulley only) with my 2012 A7 and I would like to change the spark plugs at the same time. I contacted APR tech support and they recommended NGK 2668 BKR8EIX with .028" gap. I was curious to see if that's what everyone is running or if there is a better option that I should consider?

[2k16A6]

Interested in this as well, recently went apr single pulley, only 33k miles on the car so not due for plugs yet and have not had any issues, but curious to see what the consensus is


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[bajan01]

I'm about to go APR stage 2 (SC pulley only) with my 2012 A7 and I would like to change the spark plugs at the same time. I contacted APR tech support and they recommended NGK 2668 BKR8EIX with .028" gap. I was curious to see if that's what everyone is running or if there is a better option that I should consider?

Those should be fine. Stage 2+ guys might run 9EIX gapped to 0.024” or lower. When I switched to a higher ethanol blend I went back to 8EIX from 9EIX on my dual pulley SQ5 gapped to 0.024”. I am currently running NGK coppers in my single pulley S4 and plan to do the same on my SQ5, but those will be swapped out every oil change. 8EIX should be fine for you, datalog and see if everything looks good with them.

[f4m0u5]

Im running .026 gap on stock ngk plugs on a stage 2 single pulley setup as requested by epl

[ANMS4]

I'm running STG2 DP+TB E40, plugs are NGK BKR9EIX @ .026 per John at IE :) I was running the same plug and GAP on 93

[jrubio96]

APR Stage 2 DP running NGK 2669 gapped to 0.26

[07S6]

I'm about to go APR stage 2 (SC pulley only) with my 2012 A7 and I would like to change the spark plugs at the same time. I contacted APR tech support and they recommended NGK 2668 BKR8EIX with .028" gap. I was curious to see if that's what everyone is running or if there is a better option that I should consider?

I've been asking around the forums and APR dealers the very same question for my APR single pulley A7, and there doesn't seem to be any consensus between the stock NGK (Platinum) or the BKR8EIX (Iridium) for single pulley. I've been single pulley on stock plugs for the past 2-3 years and have not noticed any issue.
I'm due for my second plug replacement at 110K miles, and may give the Iridiums a try in the next couple of weeks just for the heck of it.. If i'm not mistaken, the Iridium plugs may need more frequent replacement than the stock.

[dc2002]

Im running .026 gap on stock ngk plugs on a stage 2 single pulley setup as requested by epl

Same here

[07S6]

Just ordered NGK 2668 BKR8EIX. I guess I'll gap them to .028" and hope for the best! If the car complains one bit, i'll go right back to stock plugs..

[f4m0u5]

Just ordered NGK 2668 BKR8EIX. I guess I'll gap them to .028" and hope for the best! If the car complains one bit, i'll go right back to stock plugs..

id put them at .026 still

[back13a6]

Those should be fine. Stage 2+ guys might run 9EIX gapped to 0.024” or lower. When I switched to a higher ethanol blend I went back to 8EIX from 9EIX on my dual pulley SQ5 gapped to 0.024”. I am currently running NGK coppers in my single pulley S4 and plan to do the same on my SQ5, but those will be swapped out every oil change. 8EIX should be fine for you, datalog and see if everything looks good with them.

I prefer to run copper plugs as well going back to my LT1 and LS1/2 days, what copper plugs are you running?

[bajan01]

I prefer to run copper plugs as well going back to my LT1 and LS1/2 days, what copper plugs are you running?

NGK R5671A-8 (4554) in the S4 gapped to 0.023” and BKR8EIX in the SQ5 until I can swap the 4554s into that too.

[back13a6]

NGK R5671A-8 (4554) in the S4 gapped to 0.023” and BKR8EIX in the SQ5 until I can swap the 4554s into that too.

Thanks for the quick reply. No issues running the copper plugs? I know they are a better conductor, but wear faster.

[bajan01]

Thanks for the quick reply. No issues running the copper plugs? I know they are a better conductor, but wear faster.

Other than replacing every oil change...no issues. Once I put a set in the SQ5 and get some race gas in there I’ll grab some logs and see how they work at that extreme.

[smckay37]

Following. Currently APR stage 1. Will be Stage2 SP by year end.

[A6sport]

I am stage II dual pulley with stock plugs and see no reason to change. The car is rock solid and runs like a top!

[chydog]

I am stage II dual pulley with stock plugs and see no reason to change. The car is rock solid and runs like a top!

i definitely noticed better throttle response with the apr spec;d NGK BKR9eIX plugs, especially at initial throttle tip-in, my crec motor had just under 40K on it when tuned in september this year so perhaps new plugs were in order but the power definitely comes on earlier for me, I'm stage 2 91 octane S/C single pulley only, for an hours work and $50 i would try it if i were you

[JWebb_C7_Comp]

id put them at .026 still

What does a slightly smaller gap due for performance? Is it less likely to allow misfire as plugs start to wear?


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[f4m0u5]

What does a slightly smaller gap due for performance? Is it less likely to allow misfire as plugs start to wear?


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it prevents spark blow out, theres alot of pressure in the Cylinder and the boost is rushing into the motor by the spark plugs. it will help with throttle response and stop any hiccups

[JWebb_C7_Comp]

it prevents spark blow out, theres alot of pressure in the Cylinder and the boost is rushing into the motor by the spark plugs. it will help with throttle response and stop any hiccups

Learn something new every day; thanks.


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[07S6]

Looks like the BKR8EIX are on back order, so I switched my order and just got the much pricier stock NGK PFR8S8EG that Audi switched to in the last couple of years.
The gaps are measuring .030-.031
I’m gonna reduce it to around .028 before installing. Engine mounts are waiting for installation at same time..
IMG_1883.JPG

[07S6]

Got the new NGK PFR8S8EG plugs swapped in yesterday. Looks like they matched the OEM version of the same plug that was in the car for the past 45K miles and 2.5 yrs as stage 2 single pulley. The car felt really great on the way home and pulls strong and of course, with the new motor mounts, I can barely tell it’s running on idle with zero vibration whatsoever.
I tightened the gap to roughly .029 before installing. The old ones that came out were around .031 with no perceptible issues. A dealer tech friend installed them during my oil change and the only strange thing I noticed was the sticky oily residue on the threads of 2 or 3 of the plugs (on the plug to the right).
Should I be concerned? Car doesn’t burn through oil or anything.
IMG_2267.jpg

[dspl1236]

NGK R5671A-8 (4554)@.025 snappy throttle even in the cold. Just going todo these every oil change

Came from stock plugs, stock gap, UM tune, upper pully, will be adding the lower soon. Was stumbly at idle. Smooooth now.

[Devil_Inside]

I ended up installing the recommended NGK 2668 BKR8EIX with .028" gap and the car ran great for the short amount of time I drove it prior to trading it in. Thank you all for the recommendations and input on this subject.

[Corydms7]

You gonna have to swap those BKR plugs out more often. Everyone seems to run them but forgets the PFR8S8EG plugs are oem are laser platinum and last longer than those BKR plugs.

[gk1]

You gonna have to swap those BKR plugs out more often. Everyone seems to run them but forgets the PFR8S8EG plugs are oem are laser platinum and last longer than those BKR plugs.

The BKR's are Iridium

"Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs."

[Alabama]

The BKR's are Iridium

"Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs."

You and your facts! Do you know if there are any conditions where iridium might not perform as well as platinum (e.g., non-standard fuel, etc.)?

[Corydms7]

But they are LASER platinums. Laser platinums do last a tad longer than iridium’s.

The BKR's are Iridium

"Iridium is said to be six times harder and eight times stronger than platinum with a 700° higher melting point. Iridium spark plugs have extremely fine electrodes while retaining excellent wear characteristics. Thanks to its strength, iridium spark plugs can last up to 25% longer than comparable platinum spark plugs."

[gk1]

But they are LASER platinums. Laser platinums do last a tad longer than iridium’s.

Perhaps, but even NGK compares their latest (greatest) Ruthenium plugs to their Iridium instead of Platinum so assumption is Ruthenium>Iridium>Platinum

https://ngksparkplugs.com/wp-content...Y-1024x591.jpg

[Audibellybutton]

brisks definitely. but they have a shorter life span than iridium/platinum