Anyone toyed with Ign Timing on a Z5?
Anyone toyed with Timing on a Z5?
It got a little cooler today, so I decided to fill up with premium octane and started tinkering with the ignition timing. I advanced it 4 degrees...I was at 9, now it's at 13(10 being OEM target). Made a nice improvement in power. So how far has anyone taken it? |
if you have not noticed ,, any advancements or retardation of the time is automatically corrected by the computer
Bruce |
So how does the ecu do this? And why does the seat of my pants tell me it's working. I'm pretty objective...this car is my daily beater so I guess my expectations are low.
Maybe because I was on the low end of ideal timing(9) and now the ecu retards it just enought to be on the high end(11)?? Regardless, it's an improvement. |
I have tried this ,, I also have the 1.5L ,, and to be honest it makes no difference.. I just left the timing in the center ,, maybe +1 ... I just use higher octane gas from sunoco if I have to .. maybe your elevation may be different and you may have different factors that give you that seat of the pants feal ...
Bruce |
Austin TX is rated around 600-700 ft above sea level...I don't see elevation playing a big role. It's not the weather. While finally a little cooler, there was a noticeable difference(maybe 5 hp at most) before and after the change. I'm guessing because it was slightly retarded at first.
If I was feeling really industrious, I'd dig out the G-tech. While it's accuracy is doubted by some it is a good measure as a before and after thing. I might do that this weekend Anyway, that's why I posted...I wanted to see if anyone else had experienced the same thing or not. |
I'm set at 13-14deg and use 91 octane and it feels torquier in the low-end.
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