Quote:
Originally Posted by Donteflon
Bank 1 STFT is lean while Bank 2 STFT is right on the money with a great lambda. This supports what heitzke was saying earlier.
Additionally, you're getting timing retardation in Cyls 1-2 which is Bank 1, the same bank where your trims are lean.
I don't think this is a coincidence and there is a correlation.
When is the last time the plugs have been swapped? If it comes down to it, I'd inspect plugs, replace if needed, recheck, and then move onto inspecting injectors.
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Plugs were done about 10k miles ago when I did the bolt ons and stage 2 tune ...