Loosing my mind

[KFrancis14]

2003 Audi A4 1.8t fwd , car was into the shop to diagnose a misfire . car stutters/bogs under heavy acceleration. ( MISFIRE IN CYLINDER #1)

Already tested:
Coil packs
Spark plugs
Injectors
Fuel pressure
Fuel injector wiring
Wiring harness from DME to ignition coil
Fuses and grounds

Mods:
FMIC
test pipe
stage 1 flash
aftermarket injectors

[cjt671]

Maf

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[cjt671]

Unplug and see if it still misfires

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[old guy]

Have you physically swapped the coil pack and injector from cylinder #1 to a different cylinder?

With everything you have replaced and the misfire stays with the #1 cylinder it's time to run a compression test on that cylinder.

[KFrancis14]

still is misfiring , mechanics spent 10+ hours searching say it could be my Eurodyne stage 1 ecu and i should replace it, would this cause these issues??

[old guy]

still is misfiring , mechanics spent 10+ hours searching say it could be my Eurodyne stage 1 ecu and i should replace it, would this cause these issues??

I really doubt it would be a tune issue if the misfire is consistently on the same cylinder. If the mechanic is sure it isn't a a plug/wire/injector/compression issue it may be a faulty ignition driver in the ECU Clicky click.




The ignition drivers are pretty cheap. Here's how to remove/replace a chip from the ME7 controller. The ignition drivers require the same procedure.