|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Search | Today's Posts | Mark Forums Read |
|
BMW 3-Series (E90 E92) Forum
>
Ign. Correction datalog example! If this doesn't convice you, not sure what will!
|
|
07-27-2009, 02:58 PM | #1 |
Team Zissou
3058
Rep 10,197
Posts |
Ign. Correction datalog example! If this doesn't convice you, not sure what will!
The first log is the default stage 3 settings.... ut 85%, ign. correction 100%.
The second log I only changed the ign. correction settings to 25% to demonstrate how ign. advance changes with no other modifications. I think the results speak for themselves... clearly total ign. advance has increased. 87-90° f., 63% humidity... 3rd gear pulls default (ut:85%, ign. correction:100%): modified (ut:85%, ign. correction:25%): |
07-27-2009, 03:25 PM | #2 |
Lieutenant Colonel
82
Rep 1,575
Posts |
Great, weldone...The ignition advance increased ,so what?
__________________
Procede V4 , Catless DPs, Forge FMIC, Injen Intake, VK Oilcooler, Hartge Quads Exhaust, Modded CDV, Synapse BOV Kit, BMW Performance 335i SSK Kit, P3 vent boost gauge Space Grey 335i -> See more pics HERE |
Appreciate
0
|
07-27-2009, 03:28 PM | #3 |
Team Zissou
3058
Rep 10,197
Posts |
So what? I guess you haven't been reading the other threads on the matter... Merry (Mike/Terry) claim the procede doesn't effectively control/change timing, and that the car "learns out" the procede's changes. This is just another examples that clearly shows it working as advertised.
The more data for the public to see the better. That's "what". |
Appreciate
0
|
07-27-2009, 03:30 PM | #4 |
Major General
152
Rep 5,780
Posts |
This is the corrected advance value with the CPS offset included. By lowering the reduction of retard, it supports that the no offset learning occurs. Less timing was pulled so timing increased as you would expect. If CPS offsetting was learned out, it should have stayed the same.
|
Appreciate
0
|
07-27-2009, 03:59 PM | #5 |
Joint Chiefs of Staff
4902
Rep 115,955
Posts |
Thanks for the logs. A couple questions:
1) Why not run logs from 2000-6500rpm for a full sweep of the power band? 4400rpm-6000rpm is a very small window. 2) There appears to be boost variances between the runs. The "100%" run appears to have 1/2-1psi less boost than the "25%" run? Are these both "fully adapted" runs? Was starting IAT and other variables preserved? Was the same road used? Finally, a comment. The "25%" log does not seem to indicate knock or any other sign of engine unhappiness. Even something as simply as a spool up or targeting differences could account for this minor overall timing change. Mike |
Appreciate
0
|
07-27-2009, 04:18 PM | #6 | |
Lieutenant Colonel
82
Rep 1,575
Posts |
Quote:
__________________
Procede V4 , Catless DPs, Forge FMIC, Injen Intake, VK Oilcooler, Hartge Quads Exhaust, Modded CDV, Synapse BOV Kit, BMW Performance 335i SSK Kit, P3 vent boost gauge Space Grey 335i -> See more pics HERE |
|
Appreciate
0
|
07-27-2009, 04:18 PM | #8 |
Second Lieutenant
11
Rep 273
Posts |
I dont think the argument was whether or not the Procede controls timing... The argument was whether or not the car *NEEDED* the procede to control timing when it can do it by itself given the situation. I believe BMW has top notch safety features to ensure the longevity of their engines.
|
Appreciate
0
|
07-27-2009, 04:21 PM | #9 | |
Major General
152
Rep 5,780
Posts |
Quote:
Granted, more rev range would be nice but it really shouldn't matter. This is the area where there is the most CPS offsetting and as such, should be learned out and can be more easily seen. IMO, those boost curves are pretty darn close. At the 5900 scroll mark, there is 0.3 PSI difference. When that reaches the DME, it would be about 0.15 difference, which is splitting hairs. When you take out the offset, both are sitting right near 12 degrees total advance. If learning was occuring, the first run should be higher without the offset, about 15 degrees total advance. And true, 25% does not show any significant knock. It did go flat after 6k revs whereas the first log kept climbing. And this is on 93 octane. |
|
Appreciate
0
|
07-27-2009, 04:22 PM | #10 |
hi
129
Rep 1,140
Posts |
Merry aka (mike and terry)? Cheap Shot JP?
__________________
2022 M Sport G05
Jb4, CTS catless dp, M performance exhaust, bms intake, IND goodies, Maxton kit |
Appreciate
0
|
07-27-2009, 04:32 PM | #11 |
Team Zissou
3058
Rep 10,197
Posts |
Splitting hairs!
1) Mainly a space issue. 4000 - ~6500rpm is what I can reproduce effectively mid day where I am. 2) The boost varies in both: they both fluctuate slightly from ~14.9 - ~15.3. Yes I was attempting to keep the variables as close to the same as I can... same road, etc. The point was to demonstrate timing changes based on ign. correction adjustments.... which this demonstrates. I'm almost surprised you haven't asked about light-weight mods such as taking a big shit before the run to reduce weight by 2lbs, which could potentially change overall timing The answer to that variable is in fact no, no JDM shats. |
Appreciate
0
|
07-27-2009, 04:38 PM | #12 | |
Team Zissou
3058
Rep 10,197
Posts |
Quote:
|
|
Appreciate
0
|
07-27-2009, 04:42 PM | #13 | ||
1733
Rep 17,960
Posts
Drives: A Lot
Join Date: Sep 2006
Location: SF Bay, CA
iTrader: (0)
Garage List 2018 Ducati Panigal ... [0.00]
2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00] |
Quote:
Quote:
What you are suggesting is much like filling up a stock car with 86oct and expecting it to not compromise safety because the factory knock control system is "top notch". Shiv |
||
Appreciate
0
|
07-27-2009, 04:46 PM | #14 |
☠☠☠☠☠
21
Rep 684
Posts
Drives: 07 Blk e92 335i
Join Date: Aug 2007
Location: HK
|
Does the 25%/100% change at all after adapted(10+ so WOT)?? if either timing changes ... does it mean the car does learn?
|
Appreciate
0
|
07-27-2009, 04:51 PM | #16 |
Brigadier General
131
Rep 4,764
Posts |
Beat me to it. Was going to say almost the same thing, that the saftey systems were designed around the product as it was released. I think tuners showing an interest in making sure there are saftey features that are appropriate for the power they are delivering is a great thing.
|
Appreciate
0
|
07-27-2009, 04:51 PM | #17 |
Banned
61
Rep 1,121
Posts |
I've yet to see the ignition correction at 0% to see if the dme changes ignition to protect itself from knocking instead of the procede telling it what to do.....can somebody post those so I can compare....
|
Appreciate
0
|
07-27-2009, 04:52 PM | #18 |
Colonel
57
Rep 2,014
Posts |
Doesn't the ECU have to adjust for altitude? And when it does, depending on the altitude can compensate up to around 10.2 psi on stock program? If so then wouldn't the ECU have to adjust timing for that change in boost?
|
Appreciate
0
|
07-27-2009, 05:06 PM | #19 | |
1733
Rep 17,960
Posts
Drives: A Lot
Join Date: Sep 2006
Location: SF Bay, CA
iTrader: (0)
Garage List 2018 Ducati Panigal ... [0.00]
2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00] |
Quote:
Shiv |
|
Appreciate
0
|
07-27-2009, 05:08 PM | #20 | |
Joint Chiefs of Staff
4902
Rep 115,955
Posts |
Quote:
hard to prove anything. At a minimum lets all agree on a criteria for testing. Knock is knock whether it happens at 2000rpm, 3000rpm, or 6000rpm, so lets post full logs. Perhaps also including IAT on all logs will also help spot variances. Something I've been guilty of omitting in a couple logs. Mike |
|
Appreciate
0
|
07-27-2009, 05:10 PM | #21 |
1733
Rep 17,960
Posts
Drives: A Lot
Join Date: Sep 2006
Location: SF Bay, CA
iTrader: (0)
Garage List 2018 Ducati Panigal ... [0.00]
2016 Mazda CX5 [0.00] 2017 Aprilia Tuono ... [0.00] 2019 BMW M2 Competi ... [0.00] 2015 BMW M5 Competi ... [10.00] 2016 Ducati XDiavel S [0.00] 2016 AMG GT S [0.00] 2011 Ferrari 458 It ... [0.00] 2017 Charger Hellcat [0.00] 2015 KTM Super Duke ... [0.00] 2016 KTM RC390 [0.00] |
Mike's hamster wheel is about to seize up.
|
Appreciate
0
|
Bookmarks |
Thread Tools | Search this Thread |
|
|