BMW 1 Series Coupe Forum / 1 Series Convertible Forum (1M / tii / 135i / 128i / Coupe / Cabrio / Hatchback) (BMW E82 E88 128i 130i 135i)
 





 

Post Reply
 
Thread Tools Search this Thread
      03-28-2013, 10:48 AM   #1541
COBB Tuning
Major
COBB Tuning's Avatar
112
Rep
1,044
Posts

 
Drives: 335i
Join Date: Dec 2010
Location: Austin, TX

iTrader: (0)

Quote:
Originally Posted by euro2fast4u View Post
Something is wrong with both those system, its not reacting correctly. Both loop system are wrong. Not your fault just not a proper control system from COBB
We control everything the same way BMW does... not sure what you mean?

-Josh
Appreciate 0
      03-28-2013, 11:59 AM   #1542
euro2fast4u
Private
1
Rep
91
Posts

 
Drives: signle turbo e30
Join Date: Dec 2011
Location: WVU/MD

iTrader: (0)

Quote:
Originally Posted by r0nd3L View Post



I sorta figured that josh and its probably not your responsibility at all as the values you change don't affect the part that needs to change in order to correct this.

In the first graph shown. HPFP Actual first follows the requested nicely, the initial slopes are close not perfect, but close. However the % overshoot is also pretty bad, bc of this your settling time is then terrible and finally the ecu grabs control and plays nice. This could be from a bad second-order equation or the data rate at which the ecu is requesting or a delay in the actuator. Just think for 1,000 rpms the ecu doesn't have solid control over it. given that its a single second-order response, The damping ratio is to low. In the end its under damped while it should be critically dampened. Again Josh you probably have no control over this, and this is better then the boost control.

Now with the boost, the ecu is trying to to play catch up, at which then it over shoots. The % overshoot is better but not ideal. This one is most likely a second-order system that is again under-dampened. But then cant even meet the requirements. Towards the end we will assume that there aren't enough supporting mods to meet the required set point.

Both systems don't looked finished to be honest.

Here is a book that will help you fix this or better understand it.

http://www.amazon.com/Control-System...em+engineering
__________________
My boosted e30 vs boss 302 new video
http://www.youtube.com/watch?v=CdgxMMIOgk4

Last edited by euro2fast4u; 03-28-2013 at 12:06 PM.
Appreciate 0
      04-01-2013, 03:43 PM   #1543
abirmaher
Major
abirmaher's Avatar
United_States
28
Rep
1,048
Posts

 
Drives: 2014 M235i Coupé (BSM/CR)
Join Date: Feb 2010
Location: Orlando, Florida

iTrader: (7)

Garage List
2014 BMW M235i  [0.00]
Hi all,

I have a 2011 135i w/ DCT and just took my car in for service and so I took off my cobb. Now they told me they did a bunch of software updates released last week. Should I be worried about this? I think I heard something about every time a new update is released I have to wait u til Cobb makes a compatible tune, is this correct? What should I do to find out if my tune is compatible.

According to the SA it's a new update that came out last week.
__________________
Appreciate 0
      04-01-2013, 04:18 PM   #1544
turbo1
Private
2
Rep
70
Posts

 
Drives: 2011 135i Msport
Join Date: Jul 2011
Location: Florida

iTrader: (0)

Quote:
Originally Posted by abirmaher View Post
Hi all,

I have a 2011 135i w/ DCT and just took my car in for service and so I took off my cobb. Now they told me they did a bunch of software updates released last week. Should I be worried about this? I think I heard something about every time a new update is released I have to wait u til Cobb makes a compatible tune, is this correct? What should I do to find out if my tune is compatible.

According to the SA it's a new update that came out last week.

plug your AP in and see if you have an "unrecognized ROM" if so you will need to do the ROM dump on their website.. if you dont just download you ROM specific OTS Maps to your AP and your good to go... im pretty sure the most recent BMW ROM for our N55s is 98F0B.. and they already support it
Appreciate 0
      04-01-2013, 09:08 PM   #1545
abirmaher
Major
abirmaher's Avatar
United_States
28
Rep
1,048
Posts

 
Drives: 2014 M235i Coupé (BSM/CR)
Join Date: Feb 2010
Location: Orlando, Florida

iTrader: (7)

Garage List
2014 BMW M235i  [0.00]
Quote:
Originally Posted by turbo1 View Post
plug your AP in and see if you have an "unrecognized ROM" if so you will need to do the ROM dump on their website.. if you dont just download you ROM specific OTS Maps to your AP and your good to go... im pretty sure the most recent BMW ROM for our N55s is 98F0B.. and they already support it
Alright, also quick question, when i uninstalled the AP from the car before i took it to the dealership it felt much slower than i remembered (I have a BMW PPK), does uninstalling the AP revert you back to stock? When I picked the car up and they updated all the software it felt like my BMW PPK was back but when i uninstalled the AP i felt that it went back to stock before I had PPK.

Sorry if that got a bit complicated...
__________________
Appreciate 0
      04-02-2013, 01:01 PM   #1546
turbo1
Private
2
Rep
70
Posts

 
Drives: 2011 135i Msport
Join Date: Jul 2011
Location: Florida

iTrader: (0)

Quote:
Originally Posted by abirmaher View Post
Alright, also quick question, when i uninstalled the AP from the car before i took it to the dealership it felt much slower than i remembered (I have a BMW PPK), does uninstalling the AP revert you back to stock? When I picked the car up and they updated all the software it felt like my BMW PPK was back but when i uninstalled the AP i felt that it went back to stock before I had PPK.

Sorry if that got a bit complicated...

Not a problem at all bro, that’s what we are all on this forum for... sharing and gaining knowledge... and to my knowledge the AP should store your stock map or an extremely similar "picture" of that map and uses it when you flash back to stock map... so with that being said, i believe it should have stored your PPK flash as the "stock" base map... also, remember the car needs to recalibrate itself persay whenever you flash the ECU.. So you may have just dropped a lot of hp by flashing it back and the car hadn’t readjusted itself to all the new parameters... people chime in please, i may be wrong
Appreciate 0
      04-05-2013, 01:05 AM   #1547
1911A145
Captain
1911A145's Avatar
10
Rep
773
Posts

 
Drives: 135i
Join Date: Mar 2012
Location: Port Saint Lucie, FL

iTrader: (4)

Anyone running Torco Accelerator on the RACE 100+ Octane map yet? Or any other map or custom tune?

I prefer race fuel over ethanol blends, and I have had HUGE gains in the past cars with the Torco Accelerator mixture with 93 octane. Im really curious to see if it would work with the COBB map... COBB told me to just take a bunch of logs and give it a go. Kind of nervous... lol
Appreciate 0
      04-05-2013, 09:06 AM   #1548
Abracadabra
New Member
United_States
0
Rep
18
Posts

 
Drives: 2011 AW/CR 135i
Join Date: Aug 2010
Location: VA

iTrader: (0)

Quote:
Originally Posted by turbo1
Quote:
Originally Posted by abirmaher View Post
Alright, also quick question, when i uninstalled the AP from the car before i took it to the dealership it felt much slower than i remembered (I have a BMW PPK), does uninstalling the AP revert you back to stock? When I picked the car up and they updated all the software it felt like my BMW PPK was back but when i uninstalled the AP i felt that it went back to stock before I had PPK.

Sorry if that got a bit complicated...

Not a problem at all bro, thats what we are all on this forum for... sharing and gaining knowledge... and to my knowledge the AP should store your stock map or an extremely similar "picture" of that map and uses it when you flash back to stock map... so with that being said, i believe it should have stored your PPK flash as the "stock" base map... also, remember the car needs to recalibrate itself persay whenever you flash the ECU.. So you may have just dropped a lot of hp by flashing it back and the car hadnt readjusted itself to all the new parameters... people chime in please, i may be wrong
I totally agree. I had the same concern about losing PPK when uninstalling Cobb and customer service told me it should go back to PPK.

When I actually uninstalled cobb I believe it went back to PPK because 1) I still had the exhaust burbling from PPK (admittedly a circumstantial way of gauging whether PPK is there or not), 2) my SA probably didn't say anything (again, circumstantial), and 3) my butt dyno felt it was stronger than stock (I think there's a pattern in my reasoning here).

I agree with turbo1 about the DME not recalibrating/adapting to your driving since you had just reflashed it with a new map when you uninstalled Cobb (based on conversations with the BMW shop foreman).

So I present you my circumstantial evidence. Maybe someone could confirm/debunk this in a more technical way? Cobb?
Appreciate 0
      04-05-2013, 06:19 PM   #1549
llowlife
Private First Class
United_States
2
Rep
109
Posts

 
Drives: 09' 135i
Join Date: Apr 2011
Location: Mn

iTrader: (0)

Search led me to this thread but I am not going through 71 pages of posts.
Question..... Does the AP have the ability to shut the CEL off after install of the DP? I didn't see anything pertaining to it on the Cobb site. Thanks
__________________
09 135i
Cobb e30 tune, VRSF DP's, 7"intercooler, Chargepipe w/ Tial BOV, RB PVC, Wavetrac LSD, KN air filter, More suspension upgrades than I can remember. Alpina tranny flash. I am putting the mods here in case I DO forget. Coming soon to a 135i near you, a one off exhaust and a one off oil cooler.
Appreciate 0
      04-05-2013, 06:28 PM   #1550
Suds
EX One Addict
Suds's Avatar
United_States
4
Rep
326
Posts

 
Drives: 2011 Audi S4, 2008 Vette 6mt
Join Date: Aug 2010
Location: Lone Star State

iTrader: (1)

Quote:
Originally Posted by llowlife View Post
Search led me to this thread but I am not going through 71 pages of posts.
Question..... Does the AP have the ability to shut the CEL off after install of the DP? I didn't see anything pertaining to it on the Cobb site. Thanks
Most of the activity here is for the N55 engine, looks like you have a 2009 with a N54, N54 did not show the CEL.
Appreciate 0
      04-06-2013, 03:07 PM   #1551
Lifestyler
Private First Class
Germany
1
Rep
116
Posts

 
Drives: 135i copue
Join Date: Nov 2010
Location: Germany

iTrader: (0)

Quote:
Originally Posted by JZWBMW View Post
I have seen a full 50whp on some cars with full E85, but I just recently did some testing and with only 2 degrees of timing and E30, saw 30whp gains in some places up top, but more like a 15whp average. We then added some more timing and I saw 412whp with gasoline and 447whp with E85.

JZW
sounds nice !

how much e85 for that numbers? 447WHP


i drive a 2009 n54 135i 6mt with FBO´s !

-3" ar dps
-custom 2.75" into a 3" catless exhaust system
-wagner intercooler
-bms cp (actually stock bov´s) looking for forge,i think
-afe stage 2 dci with scoops

i oder my cobb AP,must arrived in the nex days ...

so i flash on stage2+aggressiv,do some logs,send they to PTF for a custom map,all the way right guys=?

what number can i get with my mods?

....sry for not perfekt englisch!
__________________
135i N54 FBO
Appreciate 0
      04-06-2013, 07:10 PM   #1552
Bordia
Enlisted Member
0
Rep
37
Posts

 
Drives: Black 2009 135I
Join Date: Apr 2013
Location: Colorado

iTrader: (0)

Does anybody know the boost pressure they are tuning with the n54 I never saw it specified?
Appreciate 0
      04-08-2013, 12:05 PM   #1553
ONDEMAND
TORQUE
ONDEMAND's Avatar
4
Rep
217
Posts

 
Drives: with 3 pedals
Join Date: Feb 2013
Location: USMFA

iTrader: (0)

Quote:
Originally Posted by rezvanf View Post
overall, very happy with tune so far, the exahust note alone is worth it and canceling my Sirius radio subscription love the fact that I can flash back to stok without a wrench in 15 minutes. Until Cobb come out with maps for increased throttle respoonse, I am using Pedalbox. I'll keep you posted on more impressions.
+1,000

Same feeling, only I have no Pedal box. I feel the car does rev slightly faster across the board, but the input is delayed so its moot from a heel toe | blip perspective.

Whether this is the 980FB rom and reprogramming or Cobb tune I don't know. My guess would be the former.

I know that prior to the reflash the throttle response | blip was much faster, maybe not quick heel | toe fast but better than now. I have driven the car hard for +300 miles in hopes of the "learning" factor but progress is SLOW!

My interest is in the lower rpm ranges in particular

SO COBB....WHEN WILL WE SEE LINEAR OR PERHAPS AN EVEN SHARPER THROTTLE RESPONSE?
__________________
2011 135iCP | 6MT | M-SPORT | BMW CCA | EIBACH PRO | BMS INTAKE | ER CHARGE | ETS FMIC | BMS DP | COBB STG2+ | VENTUS V12
Appreciate 0
      04-11-2013, 05:40 PM   #1554
Mikey135
Enlisted Member
0
Rep
42
Posts

 
Drives: 135i Cobb stage 1
Join Date: Mar 2013
Location: OKC

iTrader: (0)

I was wondering how good the Cobb performance numbers are? Has anybody compared their 1/4 times from the ap to numbers from a track?
Appreciate 0
      04-12-2013, 07:54 AM   #1555
ONDEMAND
TORQUE
ONDEMAND's Avatar
4
Rep
217
Posts

 
Drives: with 3 pedals
Join Date: Feb 2013
Location: USMFA

iTrader: (0)

^ don't have any before numbers for dyno or 1/4 mile.

I can say that although the original number was done with an Iphone app bone stock 2011 6MT N55 the best 0-60 i could consistently pull was 4.8-4.9.

With only the AP on STG1 Aggressive I'm hitting 4.5 consistently with a best of 4.2!

Only tried a 1/4 mile once and got 13.2 at 109 and thats with a horrible 2.3 60'.

Someone who really knows how to launch this car as a 6MT should be able to hit the high 12's easy on STG1 Aggressive.

All measurements after the COBB install were done on the AP reading direct from the ECU | OBD
__________________
2011 135iCP | 6MT | M-SPORT | BMW CCA | EIBACH PRO | BMS INTAKE | ER CHARGE | ETS FMIC | BMS DP | COBB STG2+ | VENTUS V12

Last edited by ONDEMAND; 04-12-2013 at 12:06 PM. Reason: AP Results
Appreciate 0
      04-12-2013, 08:49 AM   #1556
RX-BMW
Second Lieutenant
RX-BMW's Avatar
United_States
3
Rep
215
Posts

 
Drives: 2009 135i sport package 6AT
Join Date: Aug 2010
Location: St. Louis

iTrader: (0)

On stage 1 in automatic (DS) I ran a 13.2 1/4 @109. Haven't tried with my Stage 2+ yet..I imagine low-mid 12s
Appreciate 0
      04-12-2013, 11:58 AM   #1557
ONDEMAND
TORQUE
ONDEMAND's Avatar
4
Rep
217
Posts

 
Drives: with 3 pedals
Join Date: Feb 2013
Location: USMFA

iTrader: (0)

Would love to know what a 2+ n55 lays down....so go tear it up and report back.

I have no idea if the AP performance measurements are dead accurate but considering they come from the cars ecu or internal data I would think speed and distance are close. Time would be handled by the AP itself. The only time Ive heard the cars speedo is inaccurate is above 120-140 mph and that was referring to the actual analog "gauge" rather than a number from the ecu.

On another note what about octane increase with the n55 AP. Is anybody running race gas like VP100 or octane booster with stage 1 aggressive? I always run 93 but wondering about a mix with VP100 or MS109

I've heard it takes timing adjustments to take advantage of race gas?
__________________
2011 135iCP | 6MT | M-SPORT | BMW CCA | EIBACH PRO | BMS INTAKE | ER CHARGE | ETS FMIC | BMS DP | COBB STG2+ | VENTUS V12
Appreciate 0
      04-12-2013, 12:24 PM   #1558
Mikey135
Enlisted Member
0
Rep
42
Posts

 
Drives: 135i Cobb stage 1
Join Date: Mar 2013
Location: OKC

iTrader: (0)

Thanks thats more what I was wondering about. I did a few runs at stage 2+(n54 though) and I was getting 12.2-12.4 1/4 I was launching in second though and still losing traction on the runflats. my best 0-60 was 3.8 with most being 4 even. my 60' were normally in the 2.4-2.6 range. I just was wondering how close those would be to taking it to a track. Sounds like that would be pretty accurate. Next step need some new better tires. I tried a few launches with the E30 tune and was getting worse times because even in second I had no traction at all.
Appreciate 0
      04-12-2013, 12:45 PM   #1559
RnmEvo9
Lieutenant Colonel
28
Rep
1,692
Posts

 
Drives: 2007 335i
Join Date: Apr 2011
Location: Pembroke Pines, FL

iTrader: (2)

Quote:
Originally Posted by Mikey135 View Post
I was wondering how good the Cobb performance numbers are? Has anybody compared their 1/4 times from the ap to numbers from a track?
It is inaccurate compared to a real track. Here is a post from somebody that did a comparison between the 2: http://www.e90post.com/forums/showpo...&postcount=189

My personal best on a real track with 93 octane and Stage 2+ Aggressive was a 12.354@117mph with a 2.171 60ft and on stock runflats.
Appreciate 0
      04-12-2013, 12:53 PM   #1560
Mikey135
Enlisted Member
0
Rep
42
Posts

 
Drives: 135i Cobb stage 1
Join Date: Mar 2013
Location: OKC

iTrader: (0)

Quote:
Originally Posted by RnmEvo9 View Post
My personal best on a real track with 93 octane and Stage 2+ Aggressive was a 12.354@117mph with a 2.171 60ft and on stock runflats.
Was that a first or second gear launch? And thanks for the info.
Appreciate 0
      04-12-2013, 09:24 PM   #1561
RnmEvo9
Lieutenant Colonel
28
Rep
1,692
Posts

 
Drives: 2007 335i
Join Date: Apr 2011
Location: Pembroke Pines, FL

iTrader: (2)

Quote:
Originally Posted by Mikey135 View Post
Was that a first or second gear launch? And thanks for the info.
It was done in 2nd gear as 1st gear is useless in my car. It was also done from idle, no brake torquing.
Appreciate 0
      04-12-2013, 09:26 PM   #1562
RX-BMW
Second Lieutenant
RX-BMW's Avatar
United_States
3
Rep
215
Posts

 
Drives: 2009 135i sport package 6AT
Join Date: Aug 2010
Location: St. Louis

iTrader: (0)

lol 1st gear is definitely useless.
Appreciate 0
Post Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 10:31 PM.




1addicts
Powered by vBulletin® Version 3.7.0
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
1Addicts.com, BIMMERPOST.com, E90Post.com, F30Post.com, M3Post.com, ZPost.com, 5Post.com, 6Post.com, 7Post.com, XBimmers.com logo and trademark are properties of BIMMERPOST