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      03-09-2013, 06:15 PM   #1497
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Quote:
Originally Posted by Pig Farmer View Post
Just want to provide a brief update in case someone on the forum has the same question. I contacted Cobb and was told that BMW's PPK would not be viewed as a "previous install" and will be saved on the accessport for use when uninstalling the Cobb. That being said, the accessport did not recognize my ROM so I sent my ECU download to Cobb. Once Cobb's firmware is updated and I am able to install/uninstall the Cobb, I will confirm that you retain the PPK when removing the Cobb flash.
Hey,

Longtime 1addicts reader, first time poster here.

I got the Cobb AP for my N55 a couple months ago and was told by the CS reps that the PPK will be reinstalled at Cobb uninstall. Guess I'll find out if it's true at my next service....
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      03-10-2013, 03:03 AM   #1498
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All I gotta say is stage 2-->stage 2+ feels WAY faster than stage 1-->stage 2. <3 Cobb <3
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      03-10-2013, 10:55 AM   #1499
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Quote:
Originally Posted by RX-BMW
All I gotta say is stage 2-->stage 2+ feels WAY faster than stage 1-->stage 2. &lt;3 Cobb &lt;3
Any thoughts on the Dinan fmic compared to the new Cobb fmic?
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      03-10-2013, 11:09 AM   #1500
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Originally Posted by Madmani View Post
Any thoughts on the Dinan fmic compared to the new Cobb fmic?
Havent experienced the two. However, did install the ETS one yesterday and it's perfect fit, no trimming, easy install. 20.x psi boost with stage 2+ (probably 18.5 ave)
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      03-10-2013, 12:11 PM   #1501
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That 20psi is just a spike, you will be maxxed at ~18.5psi.
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      03-10-2013, 02:10 PM   #1502
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Quote:
Originally Posted by RX-BMW View Post
All I gotta say is stage 2-->stage 2+ feels WAY faster than stage 1-->stage 2. <3 Cobb <3
I agree. I installed the 5 inch ETS intercooler yesterday and went from the stage2 to the stage2 + and it is night and day. WAY more power up top and where the stage2 was "falling off" the stage2 + keeps pulling hard.


Cant wait to try out the race maps. lol
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      03-11-2013, 04:21 PM   #1503
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Is Cobb stage 2+ available? What mods are requiered for this stage?
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      03-11-2013, 04:29 PM   #1504
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Quote:
Originally Posted by Groundpilot View Post
Is Cobb stage 2+ available? What mods are requiered for this stage?
http://www.cobbtuning.com/AccessPORT...w/BMW-OTS-Maps

Click on your ECU revision, it will take you to the page of available maps. There is a "Map Notes" link right next to each staged map.

ex.
https://static.cobbtuning.com/cobbtu...sPORT_v402.pdf
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      03-12-2013, 09:39 AM   #1505
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This may have been answered somewhere in here but I got tired after about 20 pages of reading. If I am at stage 2 can I use an E85 mix? or do I need the FMIC upgrade?
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      03-12-2013, 10:01 AM   #1506
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Quote:
Originally Posted by Mikey135 View Post
This may have been answered somewhere in here but I got tired after about 20 pages of reading. If I am at stage 2 can I use an E85 mix? or do I need the FMIC upgrade?
You can run an ethanol mix on any map. However, unless the car is already pulling timing you won't really see any improvements until you adjust the tune for it.
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      03-12-2013, 10:08 AM   #1507
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Quote:
Originally Posted by Ænema View Post
You can run an ethanol mix on any map. However, unless the car is already pulling timing you won't really see any improvements until you adjust the tune for it.
Thanks and a follow up. I am assuming it would be a bad idea to use the Cobb ots race E85 tune which is used for stage 2+ if I am only at stage 2? Of course I am not looking to use it for long just to make my friend with his stage 1+ 335is cry. I already kept up with him neck to neck from 40-170mph on just a stage 1 tune.
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      03-12-2013, 10:11 AM   #1508
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Quote:
Originally Posted by Mikey135 View Post
Thanks and a follow up. I am assuming it would be a bad idea to use the Cobb ots race E85 tune which is used for stage 2+ if I am only at stage 2? Of course I am not looking to use it for long just to make my friend with his stage 1+ 335is cry. I already kept up with him neck to neck from 40-170mph on just a stage 1 tune.
I would strongly advise against the race mapping without FBO and alot of data logs. It's aggressive, without an upgraded FMIC you'll pull timing big time i'd imagine.
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      03-12-2013, 10:17 AM   #1509
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Quote:
Originally Posted by 135Pats View Post
I would strongly advise against the race mapping without FBO and alot of data logs. It's aggressive, without an upgraded FMIC you'll pull timing big time i'd imagine.
Thanks for the help guys.
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      03-12-2013, 10:30 AM   #1510
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Quote:
Originally Posted by 135Pats View Post
I would strongly advise against the race mapping without FBO and alot of data logs. It's aggressive, without an upgraded FMIC you'll pull timing big time i'd imagine.
This. Not only is it more likely to pull timing, but there are a few key differences in the mapping that were made with a FBO car in mind.

Mikey, my advice would be to:
1. Take the OTS stage 2 map in ATR and plug in 1.1 into the banks 1 and 2 fuel scalar tables
2. Put in ~4.5 gallons of e85 and then fill the tank with 93.
3. Grab some logs with the default logging parameters(add Fuel LPFP PSI) keeping an eye on LTFT and STFT.
4. If everything looks good then you can start adding some timing to make use of the ethanol.

If you need any help just shoot me a PM or post in here. I prefer the latter to make adding attachments easier.
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Last edited by Ænema; 03-12-2013 at 10:40 AM..
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      03-12-2013, 10:56 AM   #1511
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Is it just me or do the OTS maps (all stages) run pretty damn conservative with regards to timing and boost at higher revs...I understand as an OTS offering, it's always going to run on the conservative/safe side, but I still feel like they leave alot on the table up top. Lol i'm basically telling myself I need a protune.
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      03-12-2013, 11:08 AM   #1512
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Yeah, they're pretty conservative. You also have to keep in mind those tunes have to be on the safe side for cars in almost any imaginable scenerio. It has to be reliable both at sea level @ 95F and 7,000ft @20F.

Unfortunately we can't all live at sea level in cool, dry climates
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      03-12-2013, 11:10 AM   #1513
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Talking

Quote:
Originally Posted by Ænema View Post
This. Not only is it more likely to pull timing, but there are a few key differences in the mapping that were made with a FBO car in mind.

Mikey, my advice would be to:
1. Take the OTS stage 2 map in ATR and plug in 1.1 into the banks 1 and 2 fuel scalar tables
2. Put in ~4.5 gallons of e85 and then fill the tank with 93.
3. Grab some logs with the default logging parameters(add Fuel LPFP PSI) keeping an eye on LTFT and STFT.
4. If everything looks good then you can start adding some timing to make use of the ethanol.

If you need any help just shoot me a PM or post in here. I prefer the latter to make adding attachments easier.
Thanks a Lot I will give that a try this weekend.
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      03-12-2013, 03:36 PM   #1514
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Quote:
Originally Posted by 135Pats View Post
Is it just me or do the OTS maps (all stages) run pretty damn conservative with regards to timing and boost at higher revs...I understand as an OTS offering, it's always going to run on the conservative/safe side, but I still feel like they leave alot on the table up top. Lol i'm basically telling myself I need a protune.
Or download ATR and mess with it yourself. That's what I did for my 93 octane tune. I took their OTS map then just carefully added more timing and boost along with a ton of logs till I created a better custom map for my car. I'm sure a Pro tuner could still probably squeeze out a couple of more HP but I'm happy with it.

One thing about advancing timing, you can only advance it so much until either you knock or you stop gaining HP and TQ for a given octane. So I used virtual dyno along with my logs and found that happy timing advance where I stopped gaining any HP and was not pulling timing.

ATR is a useful tool for those willing to learn, experiment, and has the time to take many logs and make adjustments to maps. Those not willing to invest the time are better off getting a Pro tune.
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      03-12-2013, 08:23 PM   #1515
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Quote:
Originally Posted by Mikey135 View Post
This may have been answered somewhere in here but I got tired after about 20 pages of reading. If I am at stage 2 can I use an E85 mix? or do I need the FMIC upgrade?
C

I actually saw nice gains and a good bit more timing being held with E30 fuel. You should not just put on the 2+ as they raise a lot of the cat protection fueling maps a good bit. You would be much better off to start with a map close to the hardware you have and just change the injector konstant or what Cobb calls the fuel scaler and then bring in some timing and data log.

This will take some tuning and testing, but I was able to run a good bit more timing and it definitely picked up power on the dyno !

I love ethanol fuel and it seems to help a good bit in most applications, you just have to tune the car correctly to get the power out of it.

I have taken my car all the way to about 40% ethanol so far and will be testing a new fuel pump and full E85 soon :-)

JZW
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      03-12-2013, 08:35 PM   #1516
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What kind of increases are you getting for whp and tq with your E85 mix tunes over stock tunes with same bolt ons?
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      03-12-2013, 08:39 PM   #1517
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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
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      03-12-2013, 08:42 PM   #1518
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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
I am assuming you are at full bolt ons?
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