[lawwailok]

just for reference, i've datalogged my car right when i got my cobb s1. car is totally stock except bms drop-in, bmw performance exhaust.

and tonight i did a new datalog with new s1 acn 91 map also with a new addition of ETS fmic.

just for a comparison, the ETS really does its job well!

stock fmic we can see a huge 20+F raise within 3 gears shift from 1st to 4th.
ets fmic manages to keep the temp so good and only see a max of 10F IAT raise with the same gears pull.

looking at the data on ACN91, i think i should be able to run the regular V202 91 STD without having much problem. i guess the gas im running is pretty good and it should be able to run a slightly more aggressive map.

stock car with V1 map:


ets fmic with 91ACN map:



side note, we can see ACN map is running slightly less boost.
car is AT.

5-19 updated:
tried out 91 STD V202 map on 91 CA gas, same road, same pulls from 1st - 4th gear with ETS FMIC. outside temp is 68F.



take a note after i shifted into 4th, the timing started to drop to 0 deg at 13.46 sec @ 5065 rpm, and then it started climbing back up at 13.66 sec @ 5088 rpm, it reaches 4 deg timing at 15.4 sec @ 5605 rpm, and then after that i let go the gas and run out of the road.

by looking at it, i think the STD map is a bit too aggressive for California 91 gas. next week i'll try to mix 1/2 tank of 100 octane and do the same map run and see if that will help.


5/24 updated log, running with 96 octane gas, same run as above, seems like higher octane doesn't really help in the same map, only thing i can tell the boost seems to hold better up top but timing... not too sure:

[Brey335i]

Love my ETS FMIC

Why are the timing drops so pronounced? Or am I just not reading it right?

[lawwailok]

Originally Posted by Brey335i

Love my ETS FMIC

Why are the timing drops so pronounced? Or am I just not reading it right?

i think those timing drops occur during shift, hint the timing drops when you see the boost spikes that's where the shifts occur.

[Brey335i]

Originally Posted by lawwailok

i think those timing drops occur during shift, hint the timing drops when you see the boost spikes that's where the shifts occur.

Cool. Okay. Didn't mean anything by it. I'm just terrible at reading logs haha

[lawwailok]

Originally Posted by Brey335i

Cool. Okay. Didn't mean anything by it. I'm just terrible at reading logs haha

same here
i hope i post up my logs so i can learn from there

[Tuner1984]

Yes for the most part the timing doesn't look bad at all.

[dzenno]

Those are some great logs, looks good

[Joshboody]

load target is definitely lower in the 91oct map. Looks like there's fairly big knock retard in 4th on the second log... which is surprising with 91oct and new IC. no worries, this happens with everyone with all tunes so far.

[lawwailok]

Originally Posted by Joshboody

load target is definitely lower in the 91oct map. Looks like there's fairly big knock retard in 4th on the second log... which is surprising with 91oct and new IC. no worries, this happens with everyone with all tunes so far.

can you tell me how to look at the knock retard? im new about reading a log, i only know a few general stuff. thanks!

[dzenno]

going forward you can do copy/paste your csv datalogs here and see the log, much easier to do provided you have internet access:

http://www.javalotte.com/csvgraph/

[dzenno]

Originally Posted by Joshboody

load target is definitely lower in the 91oct map. Looks like there's fairly big knock retard in 4th on the second log... which is surprising with 91oct and new IC. no worries, this happens with everyone with all tunes so far.

I didn't see that, i though the lifted off throttle...that is pretty weird especially because timing drops off to zero and doesn't come back up again...did you have traction control fully on for this run? Maybe you lost traction up in 4th going over a bump or something, possible?

[Joshboody]

look at the 4th gear shift in the second log and see how the timing is drastically reduced from the prior gear... should be around 3 to 5deg maybe. You can match rpm and load in second gear to get an idea of timing... shouldn't really be any retard in 2nd if you are tuned correctly. The higher gears acceleration load is higher and more prone to some knock retard... really can't help it unless you are tuned super conservative or change timing per gear (which isn't possible now).

[Joshboody]

Originally Posted by dzenno

I didn't see that, i though the lifted off throttle...that is pretty weird especially because timing drops off to zero and doesn't come back up again...did you have traction control fully on for this run? Maybe you lost traction up in 4th going over a bump or something, possible?

timing is coming back, you just don't see it in the tall gear before he shuts it down.

[dzenno]

Originally Posted by Joshboody

timing is coming back, you just don't see it in the tall gear before he shuts it down.

Well it looks like it "tried" to come back but dropped again to zero before he let off...

seeing that boost spike like that in 4th gear I'm pretty sure that he had a traction issue there and his traction control was fully enabled and intervened

[Joshboody]

if you use excel to graph, put rpm on the x-axis. if you use the URL to graph you can't use rpm as x unless you do one gear and don't repeat rpm values... unless someone else figured this out

[dzenno]

Originally Posted by Joshboody

if you use excel to graph, put rpm on the x-axis. if you use the URL to graph you can't use rpm as x unless you do one gear and don't repeat rpm values... unless someone else figured this out

for single gear pulls or just single pulls that's fine...with multigear pulls or back to back RPM on the x-axis won't work well as there'll be too much overlapping info in a single graph...time on the x-axis is a better way to IMO

[Joshboody]

Originally Posted by dzenno

Well it looks like it "tried" to come back but dropped again to zero before he let off...

seeing that boost spike like that in 4th gear I'm pretty sure that he had a traction issue there and his traction control was fully enabled and intervened

In my opinion that's were he knocked. In 4th gear with AT I believe you'll hit a lower rpm after shift compared to the lower gears. Coupled with the load spike, maybe he's hitting a lower advance. We can't see rpm, so it's hard to tell.

I've always logged with DCT pushed once and seen no issues, unless I loose traction for real... but i have procede.

[lawwailok]

thanks for the comments!
i DTC off (i assume that's DTC off when i pressed once on the DTC button), and as soon as i shifted to 4th, i kinda let go the throttle gradually and then full off the pedal and had to slam on the brake hard due to running out of the road
and for the RPM, i think it was around 4000ish at least...

[lawwailok]

Originally Posted by dzenno

going forward you can do copy/paste your csv datalogs here and see the log, much easier to do provided you have internet access:

http://www.javalotte.com/csvgraph/

i tried to use that tool last night but it wasn't working, so i had to plot them on excel.

[Joshboody]

what were your ambient temps in the 2 logs?

[lawwailok]

Originally Posted by Joshboody

what were your ambient temps in the 2 logs?

they were both in the 68-72F range. same road, same gears pulls.

[dzenno]

Originally Posted by lawwailok

thanks for the comments!
i DTC off (i assume that's DTC off when i pressed once on the DTC button), and as soon as i shifted to 4th, i kinda let go the throttle gradually and then full off the pedal and had to slam on the brake hard due to running out of the road
and for the RPM, i think it was around 4000ish at least...

Thank you, that explains the timing and boost drop/rise in 4th gear...not knock Josh