Ok, I did the coil swap to push on coils on my 2.7T A6. The coil swap has been fine for last year or so. Stage 2 tune by Daz.
No misfires codes etc.

I got the codes for open circuit on cylinders 4&5 and flashing misfire on cylinders 5 only. Today I went thru my ICM delete wiring and changed from butt connectors and soldered and shrink tubed the wires hoping my problem was there. I have swapped coils around and problem stayed on 4 &5. Feels fine underboost, pulls ok, tuned for w/m 50/50 running straight water so idk if that's the slightly less power.

When I wired the coil plugs/connections I soldered the 2 grounds to the one ground on the 5 wire harness. I know cyl. 4 only has one ground. Should I run a 2,3,5,6 separate ground to valve cover like the 1.8Ts? Or should I just check my wiring on 4 & 5 coils. Just looking for input before I go into the wiring. Not much length to the stock wires to be cutting and redoing. There all soldered and shrink wrapped and taped up. I thought ICM wires since it effects more then one set of coils.

Also, at idle there is not codes on vcds. Once I revv the engine and check I cyl.5 and if I revv higher or drive a code will show up quickly for 4 & 5. None at idle tho.


Thanks in advance.

I'd provide a log but letting car cool off so I can go thru wires if it seems like it's the issue. Boost and pulls fine.

Ok. I will put the 50/50 mix back in. I was trying to save money for a little bit, I don't get on it hard.

Daz do u think its wiring at coils? I have to run out to store I'll log and post when I get back. I'll do a free revv log and a short pull log. Maybe you'll see something I don't in the data.

Sorry, I was wrong about the code. Here is what I got. At 1st the CEL doesnt come on til a few miles after clearing it and these are the only codes.


17775 - Cylinder 5 Ignition Circuit
            P1367 - 35-00 - Open Circuit
17772 - Cylinder 4 Ignition Circuit
            P1364 - 35-00 - Open Circuit


Daz, you said to check the intake bolts. The ones that hold the IM to the heads? I will get a smoke test kit, never invested in one. I can compression test hopefully, I only can find the one threaded end for my gauge I guess I lost the other ends since I never used them over the years just same one been on it since I bought it so hopefully its the correct size and pitch.

**Also a side note, I had my battery go bad last week, one of 6 cells failed, got a new battery. A few days prior I seafoamed the car and also I ran 1.5qts low on oil. I also pumped out and replaced the front and center diff fluids (01V - Tiptronic/AT) Just figured I'd say what else has been a issue or been worked on within past few weeks/month.**


Free Rev log attached

Thanks for the update.