2006 a4 2.0t random/multiple misfire

[Davigator27]

I’ve done some carbon cleaning a while ago, I also replaced several parts as a preventative measure. After trying out the RS4 injectors I switched back to OEM injectors. The car never ran ok after all the work, and I didn’t have time to work on it for a good while. I just fired it up again and it idles pretty good, but once I get to ~2800 rpm the engine misfires heavily at #2 but also randomly across all cylinder. I went for a little test drive and I experienced near total loss of power and heavy misfire. Fuel pressure looks good. No fuel pressure leaks after turning off the engine.


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[Epic-A3]

Are you getting any other codes?
Did you put a tune on the car?
Wild stab in the dark here, but are you 100% the timing is good still?
If you have spark, and it's on all cylinders... sounds like timing, or maybe a bad seal around intake manifold.
Check plugs as well, those Rs4 injectors would have had you burning super rich and may have fouled all of your plugs. Normally a different injector needs a tune to burn efficiently.

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