Misfires

[Nyyyko]

The misfires have not disappeared but I think I am close to closure. My obd recently has been spitting out codes related to the cat or o2 sensors. Changes the pre cat filter as that’s the first to foul or fail. Fault persists. Cleaned the rear o2, ordered a replacement, waiting for delivery. I think the rear o2 is fine which leaves me the cat converter as my nemesis and it al makes sense. I don’t know for how long but for a period of time with the HPFP leaking into the oil was generating nasty combustion byproducts which have partially clogged my CC.

[Nyyyko]

Misfire and idle lugging update.

This issue is driving me a bit mental. The misfires and rough idle continue.

replaced coil packs, spark plugs, fuel injectors, water pump, pcv valve, hpfp and cam follower, exhaust down pipe. de-carbed the intake and valves and still I idle rough with intermittent misfires in all cylinders. Symptoms improve if I engage the a/c compressor or shift into D/S/R. OBDeleven adaptation of throttle body is good, intake flap runner adaptation is good (I did notice a slight improvement after this one), intake cam adaptation is good.

vacuum leak(s)? Intake manifold leak?

id like to bump up my idle rpm to 780-800 but I can’t seem to change the value from 128 to anything else.

maf looks good, boost is good, all valves/solenoids function. I am open to suggestions!

[Nyyyko]

I bought a cheap android pad for my OBDeleven as android is much much muchly better suited to the device, and noticed, very clearly that there is a software update for my dsg dq500. Seeing as my whip (hahah) is a 2012/13 model and has never had a sw update, I’ve booked in for early next week to flash. Since day dot I have had a ‘feeling’ that my misfires and idle lugging may be as a result of the transmission as putting it into gear eliminates the issue. So, stay tuned… get it?… and I’ll update once updated. At least I’ve done some good maintenance on the tig in the meantime.

[Lucas_R]

I bought a cheap android pad for my OBDeleven as android is much much muchly better suited to the device, and noticed, very clearly that there is a software update for my dsg dq500. Seeing as my whip (hahah) is a 2012/13 model and has never had a sw update, I’ve booked in for early next week to flash. Since day dot I have had a ‘feeling’ that my misfires and idle lugging may be as a result of the transmission as putting it into gear eliminates the issue. So, stay tuned… get it?… and I’ll update once updated. At least I’ve done some good maintenance on the tig in the meantime.

Fingers crossed mate - sounds like you have had a hard time chasing this issue and spent a lot of time and money.