Quote:
Originally Posted by vrships
Yeah, the timing itself is much more advanced and that's why it gained power at high RPM.
I was talking about ignition timing corrections. Ideally those should be zero indicating that the engine is happy with the advanced in timing the DME plans. If it detects any knock, or anything makes it uncomfortable to follow the target timing, the DME will correct it, which is always a negative value. Too many corrections means the timing target is not suitable for the fuel or engine condition, it is too aggressive.
I still don't know how much correction is acceptable. In some videos I see B58 should be fine if all timings corrections are less than -3. Clearly I got too many -4, -5 with 93 map.
But my stock map gives me -6 &-7 for years with regular fuels. So I wondered if I worried too much or what.
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Yeah you're right. You did gain timing but it still consistantly pulls timing in all cylinders. All kinda points to bad quality gas.
I haven't saved any logs lately but I do have one log from last year running strictly shell 93 here on the east coast. My corrections are all 0 with 1 or 2 cylinders at the top of the rev range ~1.5-2 degrees.
https://datazap.me/u/greatzong/run1-...46&zoom=26-105