206tsi R-line - Power loss and misfire

[VWTDI]

Hey there brains trust. Hoping for some advice on a few fault codes that have popped up.

Car is 2017 206 r-line wagon. APR Stage 1 and DSG tune, ODO about 100k.

When accelerating relatively quickly (more than say 50%), I can feel power surges which throw an error on the dash saying “EPC”. It activates some sort of limp mode with very low power. When I stop, the car is idling rough, and if you rev engine to 1.5k rpm there is a very noticeable engine shudder - one cylinder not firing and out of balance maybe?

If I turn the car off and back on - all is fine and drives normal (if you don’t accelerate quickly). I drove for 4 hours like this today with no issue.

I have read the below codes using a cheap OBD2 reader:

P0304 - cylinder 4 misfire detected
P0302 - cylinder 2 misfire detected
P0300 - random/multiple cylinder misfire detected
B2AAA - body

After clearing codes - everything is normal but I can not rev past 5k rpm while stationary due to a rev limiter.

I plan to swap over coil packs 2&4 with 1&3 to see if they are the problem. Plug were replaced 30k ago.

Any other ideas what this might be?
Thanks in advanced - Jeremy.

[Lucas_R]

Sounds like your typical dead/dying ignition coil symptoms. If the misfire moves to the other cylinders when you change them over then you can be pretty certain this is the issue.

New aftermarket ignition coils can be purchased if you want something a little bit different to the stock ones. I had APR coils on my Golf GTI a few years ago, but 034 Motorsports and Racingline also offer them now. They are all available in various colours too.

034 - High Output Ignition Coils (x4) - VW Golf MK7 GTI/R & Audi S3/TT/TTS– VAGPARTS Australia

RACINGLINE HIGHER OUTPUT IGNITION COIL / MQB EVO / MQB 2.0TSI, 1.8TSI, 2.5TFSI [VWR900000] - Harding Performance

APR Ignition Coil Pack Red SINGLE - Audi A3, S3, RS3 8V (Facelift) /VW Golf GTi, R Mk7-7.5 MS100192

[nermal]

I have the 034 ones - they are red, so they go faster. They also have heatsinks that probably don't do anything, but sound like a 'cool' idea.