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@15 degrees....that the 1st i heard that 15 degrees on the calum ecu made more power.....i was under the impression that 10 degrees was best. very nice #'s bro
By it being a calum ecu doesnt mean it has same timing map as all the rest. His computer might have updated timing map. I know the one weve seen which was the base map of sr16, we had to go little bit lower then 10.
I'm having a hard time reading the graph, but I thought it was typical for the SR6 low cams to make less power than the SR20 low cams before switch over, and the SR16 high cams to outperform the SR20 high cams at higher RPMs. But in this graph, I see the SR16 cams outperforming the SR20 cams at all RPM.
@15 degrees....that the 1st i heard that 15 degrees on the calum ecu made more power.....i was under the impression that 10 degrees was best. very nice #'s bro
Quote:
Originally Posted by danilo20
By it being a calum ecu doesnt mean it has same timing map as all the rest. His computer might have updated timing map. I know the one weve seen which was the base map of sr16, we had to go little bit lower then 10.
thats why i was letting you guys know............ we just played with the timming, kept raising it until we lost power, and ended up at 15..
I'm having a hard time reading the graph, but I thought it was typical for the SR6 low cams to make less power than the SR20 low cams before switch over, and the SR16 high cams to outperform the SR20 high cams at higher RPMs. But in this graph, I see the SR16 cams outperforming the SR20 cams at all RPM.
Am I missing something?
idk what to tell you, the cams made more power everywhere... the only other thing we changed was the timming. the timming was set to 10degrees with stock cams and 15 with the sr16s
I forget where the above had the cam switching set to, that will make a difference. This is the kind of tuning that with a realtime ecu you can find not just peak power but more power under the curve at lower rpms.
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All posts by Calum in this thread are copyrighted by Calum, and cannot be edited, deleted, or copied without his express permission. calum@calumsult.com
I really don't think that using the 1.6L for a 2.0L works too well. The 1.6 has a shorter stroke and spends less time at TDC, hence the need for more timing.
I haven't had a chance to dyno yet, but at the dragstrip last week, I pulled 4* of timing out of your supplied 1.6 timing map and the car was quicker and had the same MPH (97 MPH). When I got back from the track I adapted the OEM 2.0L VE map to 8000 RPMS and the car felt like it woke up. Again, this is only seat of the pants, I hope to have dyno graphs to back it up soon. My .02.
I love my Realtime ECU.
Quote:
Originally Posted by Calum
Here's the stock SR16VE timing curve (and whats on the basic ECUs unless you specify something different):
I forget where the above had the cam switching set to, that will make a difference. This is the kind of tuning that with a realtime ecu you can find not just peak power but more power under the curve at lower rpms.
I really don't think that using the 1.6L for a 2.0L works too well. The 1.6 has a shorter stroke and spends less time at TDC, hence the need for more timing.
Your right. We need a much better standard VE program. I think just using the 20VE timing curve is a step in the right direction. Dyno tune yours and I'll switch to that, if your making your program public.
I'm happy with where the SR16VE cam program ended up. I think there's still plenty of room to grow, buts its a pretty decent base.
Here's something else to play with: for a car that is all/mostly a racecar, change the rpm scaling to 1000rpm,2000rpm,3000rpm,4000rpm, then very fine increments from there to just below your redline. You loose resolution down low, but you can really fine tune the power band. The car will still drive just fine with the big jumps down low, no problems there.
I don't mind sharing at all, that was your hope with the new ECUs right? Makes sense about rescaling the RPMs, find your peak torque on a dyno then fine tune right there.
I forget where the above had the cam switching set to, that will make a difference. This is the kind of tuning that with a realtime ecu you can find not just peak power but more power under the curve at lower rpms.
5100 and 5500.
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1996 200SX SE-R VE powered
1991 Sentra SE-R
2004 Subaru Forester turbo
2006 Mitsubishi Evolution IX
