Quote:
Originally Posted by dk79
Is there any mention of air to fuel ratio during the testing phase of racechip to make sure that the car is not running too lean which can lead to engine failure.
From online info new m5 already runs lean and piggybacks can make it worse. True dme tune can alter fuel tables to rectify the problem.
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My logs of RC shows lambda around 0.85 at wot. Safe for DI.