Ignition coils for Mk6 Golf GTI

[Boony405hp]

Hi guys,

I recently was struck with the P0301 code 'Cylinder 1 misfire' and from doing some searches I see it's a common problem. It was already booked to go in for a 90,000km service this Thursday. I rang around a few dealers today and seemed to be an average of $94-107 for each coil but it had to be ordered from Germany. What do you all recommend for replacement ones? It currently has the 06h905115 version, I've been told they are now superseded by the 07K905715F. I am assuming they will want to do all 4 (which I guess makes sense) but is $400 for a set of coils too much? If so I'd like to try source a second hand one to get me going and then order a new set elsewhere if that's the case. The car is standard/un-modified.

Thanks.

[Bug_racer]

Coil Pack - Priced Each - Euro Revolution

[brad]

I use these in my TSI engine.

Red is good

R8 Coil Pack (Red "E" Series) (4 pack) - BMR Autowerkes

[AdamD]

Most people buy the Audi R8 coilpacks in a set of 4, as per Brad's link above. Highly recommended.

[Martin]

It's commonly number 3 that goes

Put injector cleaner into the tank and see if that helps

At 90k you may need to have the inlet runners and back of the valves cleaned
A sure sign is if you don't use the car for 3 or 4 days and then when it starts it's rough for a few minutes

The red coil packs are electrically identical but look way cool

[brad]

The red coil packs are electrically identical but look way cool

That's incorrect Martin. The R8 coils have a few extra windings and put out a fraction more spark that is measurable on a test bench. In actual driving there's no discernible difference between a good "stock" coil & the red ones.

[Martin]

Right you are - found this:

For those of you looking for more technical data on these coil packs, here is what we've found so far with our bench ( oscilloscope ) testing:

1) These coils can be used on your FSI/TSI engine at ANY level of modification. They function just as well on a dead stock car as a highly modified one.

2) They are NOT the same coils with red housings. The secondary circuit on the R8 coils has a higher resistance (more windings) than the stock coils. In fact the secondary circuits were slightly closer to the Okadas we tested than the secondary of the stock coils.

3) We tested these between 12 and 16 volts (remember if your alternator is charging properly the input will be right around 14). We tested them between 200 and 16,000rpm. The stock coils started to misfire at a much lower rpm than the R8's with a stock spark plug gapped @ .032".

4) The spark was visibly brighter and more intense on the R8's when compared to the stock coils @ every rpm we compared in the stock rev range. We didn't compare anything under 1,000rpm.

5) We were able to open the gap on the plugs much further with the R8's than the stock plug with out misfiring at the same rpm/voltage.

6) Here is what we were finding as an AVERAGE on the secondary circuit for each of the coils.

Stock: 3.3 M ohms
5 cylinder coils: 4.75 M ohms
R8's: 5.31 M ohms
Okadas: 6.2 M ohms

[MozzGTI]

+1 for BMR R8 coil packs and that number 3 is often the first to go.

[Tobes_WIR35]

I've gone through two full sets of coils in 100,000km. Only one failed each time but I replaced the lot. I keep meaning to buy a spare set and keeping at least one coil in the car in case I lose another one...