W2 408 Dyno results today !

mbaird said

That is great advice. It never occured to me during the run it could be ignition related .

The question remains... could that
cylinder be the cause of power falling off after 6200 ? There seems to be a corelation between the afr curve on #7 and the power curve . Seems to be....


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EGT might shed some light, rich but running I would expect to show different than a misfire. The power and the strange AFR on #7 could be related - hard to say but finding out will take more time and some money. As with anything engine-related, there's always a lot of 'maybe' involved.

In any event, if it's possible to tinker with #7 without a ton of extra cost - it would be worth it IMO to ensure it's dialed in. Then again, if it doesn't show up part throttle it might not actually show up in the car either, even at WOT. I'm sure the dyno is able to load the engine far more than it will see otherwise. Is it worth the added expense in order to get a prettier graph? It might boil down to a value judgement.