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S2 Owners, Post Up Some Data Logs!
So I have been chatting up with the SARX guys on FB and we came across something interesting. Now we really haven't got to a point where people are familiar with the S2's ECU maps, so for all I know, this is "normal". I am interested in seeing what others' logs look like:
https://sphotos-a.xx.fbcdn.net/hphot...99530831_o.jpg As you can see, car goes nutty rich at like 5K !? AFR scale is on the primary axis (left) MAFv, Absolute Load is on secondary axis (right) RPM is on the X axis |
Originally Posted by paimon.soror
(Post 4464053)
As you can see, car goes nutty rich at like 5K !? |
side note: Dont mind the peak lean, i was coasting before my pull cause it was a turn
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Trying to find his dyno sheet, but Brettus, not sure if you remember this post from the S2 ECU Tuning thread ...
Originally Posted by REtali8
My only real upgrade up to this point has been the aftermarket ignition kit. If you take a look at thread diagnosis my dyno S2, you can see how rich my car runs. Brettus suggested I clean my SSV and VDI valves. So am trying to do that. I'd hope I can before Saturday but if not, will be before we write anything to my ECU for a true before/after snapshot. What do I expect to gain? Nothing really as far as horsepower. If they can figure something out to give me some ponies, great. If not, no loss. Am doing this to validate MazdaEdit can in fact do a S2 tune or not. If it does, THEN we can start looking at upgrades and FI for S2's that need a tune. I'm one of those that would like to go FI, but I really liked the little creature comforts of the S2.
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Originally Posted by paimon.soror
(Post 4464086)
Trying to find his dyno sheet, but Brettus, not sure if you remember this post from the S2 ECU Tuning thread ...
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*smacks head* duh sorry. What are the odds that aftermarket ignition causes the rich condition? What are the odds this is "normal" since the aforementioned user also stated a rich condition
edited above quote to remove vendor reference |
As the user in question, while I wasn't tracking AFR's at that point, my dyno stayed fairly consistent from before and after coils. The rotary shop where my first dyno was done didn't map AFRs but tuner shop did. Have access to look at pretty much anything via obd port and DashCommand. Anything you want me to track?
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Originally Posted by paimon.soror
(Post 4464103)
*smacks head* duh sorry. What are the odds that aftermarket ignition causes the rich condition? What are the odds this is "normal" since the aforementioned user also stated a rich condition
edited above quote to remove vendor reference |
Originally Posted by REtali8
(Post 4464198)
As the user in question, while I wasn't tracking AFR's at that point, my dyno stayed fairly consistent from before and after coils. The rotary shop where my first dyno was done didn't map AFRs but tuner shop did. Have access to look at pretty much anything via obd port and DashCommand. Anything you want me to track?
Originally Posted by Brettus
(Post 4464208)
It's not that rich from 5500 at all . I'd say pretty good actually.
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The target is 13.1 and he is seeing 11.1 to 12.2...
Doesn't seem right, unless its not supposed to meet its target. |
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the more i look at logs etc the more I agree with Racing Beat. Dont tune for a/f's--tune for power.
a/f's are not as important as ignition timing when tuning per RB. RB's track ecu reflash has the a/f's in the 13 low 14's at 8K rpm and full load! |
Originally Posted by paimon.soror
(Post 4464217)
It would be awesome if you could try and get a log like mine. I simply just did a pull to 8k while tracking AFR, MAF and Load. It would be interesting to see similar results...at least it would put my mind at ease.
Even the parts where it gets down to 11.5ish? That seems crazy for NA no? |
oh ok well then i wont fret about it till i can start tuning :). Silly SARXers telling me somethin is borked with my tune. :-p
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What did you use to collect this data?
How much ethanol was in the fuel you were using for this pull (or am I digging too deep here?)? |
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