Quote:
Originally Posted by Dave 90TT
As a note, the power cut at 1/8 of a tank is not due to the ECU doing anything, it's due to fuel starvation. With the tank that low, any g forces (braking, acceleration, turns, etc...) can cause the fuel pickup to not get a full pull of what's left in the tank, resulting in a heavily lean mixture, which is obviously not good for the car. The lean mixture results in knocking, and the ECU cuts timing.
I try never to get my M below 1/2 of a tank on track days, and NEVER below 1/4 of a tank. Not a GTS, but same principle.
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I thought it fuel starved at 1/3 of a tank but actually even a hair lower than 1/2 and it happens.
Keep in mind the fuel pump will die if this happens enough and it's expensive as hell