Quote:
Originally Posted by Kodename47
Think about it, if you increase the DI angle you are firing earlier in the cycle when there is more chance of overlap. It's hard to determine what will happen, but from what I've read you want later injection to cool the charge down at the right time of the cylinder fill. Honestly, I'd probably leave it. It won't gain you anything noticeable and you can't tell if it's good or bad either.
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Doh, I guess I got the directions reversed. So theoretically it should be a lower number, not a higher.
A bit late to realize that, since I just did 2 flashes. First I did as said above and increased with +10 to match the MY17 tune. No difference (also smoothened the exhaust cam below 3600, and it felt like sh!t). So I flashed again with 340 like this (and normal cam):
Then I went for another drive. First, a short log, upload and check that nothing was wrong. All looked okay and then I went and just enjoyed driving the car, what I actually didn't do for months.
Result? No difference noticeable...
A Haltech supporter wrote the following in their forum:
Quote:
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In practice the easiest way to do this is by tuning your engine to a known AFR. Next, adjust the injector firing angle until the engine becomes as rich as possible, now we know that the engine is burning the maximum amount of injected fuel. Do this for each RPM site you require.
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I guess it is more complicated for our cars because of D4S. (Also, it probably helps adjusting in the right direction.
)