My tuned 17' R has had RS7 plugs and APR coils for awhile without issue, but I'm ready for a new set.
I have used the 027 coil in a beetle with with points and the coil was getting hot. It was solved by using the 039 coil (Bosch grey).
Had thrown some 2 years ago and still running clean as ever
I have 75K on my CC Sport with APR Stage1+ Tune. I recently changed my plugs and put APR coils in not sure if got any real power but the car feels so much better. At $27 a coil why not use APR?
FWIW, I got an APR Stage 1+ tune on my '13 CC at about 30k miles. Blew one of the stock coils within a month. Replaced with red tops and new plugs and have been good since then (19k miles).
I pulled all the coils out and one of them was rusted to shit. As I mentioned, I didn't want to pay $460 to get them from MINI, so the parts store supplied me with Bosch coils and they worked well. I ripped the car through the business district I work in ala Grand Tour; all the stuttering problems, hiccups are gone and the car feels way more powerful than before.
VW CC 2.0t Ignition Parts Bosch Audi R8 Ignition Coils for 06E905115F OEM VW Ignition Coil 07K905715G Bosch Spark Plugs for 2.0t Bosch R8 Igntion Coils with Bosch Spark Plug Set Bosch R8 Igntion Coils with NGK Spark Plug Set
Performance gains from only a coil, I don't know, probably none, however the car I have it in is completely stock in the engine department. As an addition to mods I think the coil is a good idea because it helps to smooth out these cases when mixture is out of stoich Maybe better throttle response.
Just replaced my coils. AVOID Bosch. Literal trash that does not even work.
Options like APR's and RS3 coils offer very little if at all over factory other than looking pretty.
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