Ignition coil Bosch or NGK
Yes, it's installed, and I have not had any failures since Monday. It was failing maybe every other day, maybe two times in a day.
So far, it's been four days without an engine start failure since replacing the ignition coil.
I just replaced coils with bosch, VW Ignition Coil Service Kit - Bremi 06E905115EBR2 , so far, works fine with no problem.
I did NGK and change the boots on the ignition coils on my 2013 no issues about to do the 200k maintenance after I do my timing belt will use the same method.
NGK
Had a fairly cheap set of NGK coils from rockauto, been running them for 3 years now without issues.
In my experience the Bosch ones last 100k miles. I've sold and installed thousands and I'm not sure I've ever warrantied one.
The Delphi coils are junk. Bosch updated the coils they offered and we've used the updated coil multiple times and never had to warranty a single one out in the 4 years we've been installing them.
Everytime we've used a Delphi in the past the white silicone on the boot degrades and falls apart in 6-12 months and customer cars came back with misfires again.
The old Bosch coils wear out because people don't do spark plugs and replacements on time. The old plugs end up with crazy gaps and it kills the coils. Usually at 100k-120k miles but honestly that's the normal lifespan of a pencil style coil regardless.
If you're plugs are old and you're beginning to experience misfires then save yourself the time do all 6 plugs and coils. Your N52 will thank you.
The R8 coils are cheaper then the standard Bosch coils so cheaper if nothing else.
Just replaced my coils. AVOID Bosch. Literal trash that does not even work.
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