|
|
|
|
|
|
BMW Garage | BMW Meets | Register | Today's Posts | Search |
|
BMW 3-Series (E90 E92) Forum
>
Datalogging With Cobb
|
|
03-04-2013, 09:06 AM | #67 |
Lieutenant
77
Rep 466
Posts |
Thanks for checking out my log. I am considering upgrading the IC, even know that is not my current problem. I sure the first pull when it is freezing outside does not experience heat soak. I see a lot of discussion about different brand DP's, but I really don't know what makes it better. Is there some kind of resonator or other restriction in the stock DP's? I'm not looking for maximum gains out of this engine; I just don't like it falling flat at 6k rpm. Would an IC and DP's be the magic cure that will produce an even pull to redline?
|
Appreciate
0
|
03-04-2013, 09:11 AM | #68 | |
Major General
456
Rep 6,478
Posts |
Quote:
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP
F30 N55 XDrive EBII |
|
Appreciate
0
|
03-04-2013, 09:22 AM | #69 |
Captain
14
Rep 961
Posts |
The stock DPs have cats in them and are relatively small/constrictive.
As far as aftermarket DPs go, price and fitment are really the only concerns. Any of the namebrand DPs will work fine: AA, AR, MS, VRSF etc... ICs are a little more complicated. People can(and will) argue intercoolers all day, but honestly they all perform well. Pick whichever one fits into your budget the best. They will both help the "fall off" immensely, unfortunately to fully eliminate that feeling you may need to look into a protune or e-tune. It's a common request that i've seen where people are willing to give up a little torque in the mids to pick up more power up top.
__________________
"I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne
|
Appreciate
0
|
03-04-2013, 10:35 AM | #70 |
Lieutenant Colonel
92
Rep 1,529
Posts |
could someone please list all the parameters to log with COBB AP for proper troubleshooting, tuning, etc since there is a maximum allowable channels?
i was trying to follow the parameters on COBB e30 guide and http://www.e90post.com/forums/showth...=792736&page=2 but seem to reach the limit, please help. |
Appreciate
0
|
03-04-2013, 11:24 AM | #71 | |
Major General
456
Rep 6,478
Posts |
Quote:
__________________
E88 N54 Alpinweiss/Coral Red/Motiv HTA 3586r Tial .82AR/Other stuff...652WHP
F30 N55 XDrive EBII |
|
Appreciate
0
|
03-04-2013, 02:41 PM | #72 | |
Captain
14
Rep 961
Posts |
Quote:
__________________
"I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne
|
|
Appreciate
0
|
03-04-2013, 05:15 PM | #73 |
Private First Class
9
Rep 167
Posts |
1st logs with Cobb!
Hey guys,
Just recently picked up my Cobb and am really enjoying it. Car is just BMS DCI and Cobb St1 Aggressive on 93. Let me know what you guys think, as there are times the car just starts to go and picks up a little, then half way through the powerband kicks it up again. Thanks! PS - I also did a pull in both 3rd, then did a 4th gear pull to compare. 3rd Gear.zip 4th Gear.zip
__________________
The Old: DG G35 6mt coupe The New: AW 6mt E92 335i |
Appreciate
0
|
03-04-2013, 07:20 PM | #75 | |
Captain
14
Rep 961
Posts |
Quote:
__________________
"I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne
|
|
Appreciate
0
|
03-04-2013, 08:24 PM | #76 | |
Private First Class
9
Rep 167
Posts |
Quote:
__________________
The Old: DG G35 6mt coupe The New: AW 6mt E92 335i |
|
Appreciate
0
|
03-04-2013, 09:37 PM | #78 |
Captain
14
Rep 961
Posts |
Just use the default logging list. For boost overshoots add "MAF requested(WGDC)" and "Boost stepoint factor."
__________________
"I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne
|
Appreciate
0
|
03-04-2013, 11:26 PM | #80 |
Captain
14
Rep 961
Posts |
Yes... and no.
It's easy to add timing into the timing main table and increase timing targets, whether it's easy to add timing and the car actually like it on 93(or even worse 91) octane is another story. The two main power makers are timing and boost, some cars respond better to boost and some respond better to timing. Of coarse, if you're runing e85 or meth that makes it a lot easier to make really appreciable power gains. If you need any help please feel free to PM me, I'm by means an expert but i can help to get you started.
__________________
"I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne
|
Appreciate
0
|
03-21-2013, 12:12 AM | #81 |
Colonel
331
Rep 2,663
Posts
Drives: BMW 335xi Sedan; BMW M3 ZCP
Join Date: Nov 2007
Location: NYC
|
Bump for a great job.
__________________
335xi Sedan 6AT | Weather(70-85°F) | N54 Tune Comparison Chart || N54 Turbo Upgrade Comparison Chart
-PROcede Rev. 2.5 ~ v5 (3/17 maps) / JB4 (8/21 maps) / COBB (Stg2+FMIC LT Aggressive maps) Procede Map2(UT 45 - IGN 40) Aggression Target 2.0 | 0-60 in 4.0sec || Cobb E30 LT (35% Ethanol/65% 93 Octane) | 0-60 in 3.9sec AR Design Catless DP | BMS DCI + OCC | ETS 5 FMIC | Alpina B3 Trans Flash |235/265 19" Michelin PSS |
Appreciate
0
|
03-25-2013, 10:26 PM | #82 |
Private
12
Rep 68
Posts |
Hey guys, was curious if I might be able to get some eyes on some logs I did. I'm still really new to reading the logged information, but I feel like something might be up with some of the values I've been logging.
Initially, I went with the Stage 1 Aggressive map, but under acceleration in 5th and 6th gear I was getting a lot of chugging and jerky acceleration. Thinking it may have been the map, I went down to the Stage 1 Sport map this evening. The chugging and jerky acceleration seems to be gone or less noticeable in the higher gears now, but I'm still feel like some logged data is odd. Acceleration in general feels a bit spotty with both maps though. Sometimes it's very smooth and other times it feels like its chugging and cutting out. All logs were 3rd gear pulls up into about mid 4th gear using 93 octane gas. DTC was turned off as well. If what I've been reading is right, my AFR is spiking extremely high (~230's) during peak revs and ever after I let off the gas and begin coasting. I've attached 3 datalogs. Two from this evening labeled 032513 done using the Stage1 Sports map and another log from 032313 which was done using the Stage 1 Aggressive map. I'd really appreciate a quick look if anyone could spare some time. Thanks.
__________________
| F22 M235i xDrive | Mineral Grey |
|
Appreciate
0
|
03-25-2013, 10:48 PM | #83 | |
Captain
14
Rep 961
Posts |
Quote:
Your having some minor timing corrections but nothing to be concerned about. Mostly the corrections are when the load/boost is ramping up or during a shift. AFRs are good, it's completely normal to see the AFRs lean out when coasting back down(even moreso with our DI setup.) The Aggressive log did have a rather severe throttle closure that can definitely cause a "hesitation" feel. You can take care of that using ATR if you're willing to spend a little time working on it.
__________________
"I'm not surprised you get along well with all the other neighbours. If you put fifty children with Down's syndrome in a room there is going to be a lot of hugging." David Thorne
|
|
Appreciate
0
|
04-19-2013, 10:42 PM | #84 |
Captain
233
Rep 885
Posts |
Appreciate any feedback if I can get some guys
Something is off in the way cars been running lately. During a cobb flash recently I got a fuel pump warning post flash that lasted for about 3 seconds then went away. Car is giving me a p29E1 mixture code that I can clear but then comes back after a short drive. Ready to install my downpipes but dont want to if my fuel pump is on the way out. Newb at logging but heres a quick 3rd gear pull I did. Hopefully sufficient to tell if anything looks funny to you guys with experience. Cobb stage 1+ Drive ST 91 octane with about 4 gallons 100 octane Dinan axle back, dinan intercooler, dinan intake, high flow secondary cats and stock downpipes with this pull Thanks in advance guys Edit: Trying to make sense of it and understand how to read these. Is something off with my AFR? Possibley causing the mixture code. Or is it more likely the secondary cat replacement causing the code?
__________________
DocRace 6266 E92. M8 comp coupe, X5m
Last edited by R.G.; 04-19-2013 at 11:39 PM.. |
Appreciate
0
|
04-20-2013, 10:50 AM | #85 | |
Colonel
71
Rep 2,626
Posts |
Quote:
your logs are mostly fine. I am surprised you get timing correction on the "drive" map when you have 4 gallons of 100 in the tank. Either the 91 is super shitty, or you need new plugs/coils may be. You also have some slight throttle closures because you are overshooting the requesting load, not a huge deal in your case but you can easily fix that in ATR. AFRs look fine... I have not gotten that code before so I don't know what teh causes are in general. You can always log the requested HPFP and actual and compare to see whether the HPFP is falling short or not...
__________________
'18 F80 M3 Comp 6MT - Stock
'07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P | '10 E92 335i M, 6MT | '07 E90 335i, PTF COBB E50, FBO, HFS4 |
|
Appreciate
0
|
04-20-2013, 12:20 PM | #86 | |
Captain
233
Rep 885
Posts |
Quote:
Thanks for taking a look Marv! I added the 100 octane a few days ago after noticing the timing corrections and it did absolutely nothing to resolve them. Going to try 2-3 gallons of e85 later today and see that helps. Again, thank you I found this on the cobb site. Im sure it has something to do with the cats. Will have it checked out during downpipe install 29E1 - Fuel mixture control 2 Typically caused by the wrong O2 sensors in the wrong downpipe or a major exhaust leak. Grey wire loom goes to the back pipe, black wire loom goes to the front pipe.
__________________
DocRace 6266 E92. M8 comp coupe, X5m
|
|
Appreciate
0
|
04-20-2013, 12:38 PM | #87 | |
Captain
233
Rep 885
Posts |
Plugs have less than 1k on them, possible its the coils
Quote:
WOW. Did not know that going to check that out with next log. Awesome, thanks
__________________
DocRace 6266 E92. M8 comp coupe, X5m
|
|
Appreciate
0
|
04-20-2013, 12:51 PM | #88 |
Colonel
71
Rep 2,626
Posts |
Glad I could help
__________________
'18 F80 M3 Comp 6MT - Stock
'07 E92 335i 6MT- HP650, inlets/outlets, ER FMIC, VRSF CP, LPFP stg2, CSF rad, 'is Aux rad, ER OC, Ohlins, M control arms, eibach front sway bar. '05 C55 AMG SOLD - '22 Tesla M3P | '10 E92 335i M, 6MT | '07 E90 335i, PTF COBB E50, FBO, HFS4 |
Appreciate
0
|
Bookmarks |
|
|