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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > 2007 BMW 335i BETA AccessPORT Available Now!



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      04-11-2011, 04:24 PM   #155
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Originally Posted by lawwailok View Post
side note, i realized after cobb, my exhaust is getting a little quieter too.
I noticed the same thing. Much less of the snorting/gurgling I used to get on deceleration. I'd really love to know why that is if anyone has any idea...
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      04-11-2011, 04:29 PM   #156
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I noticed the same thing. Much less of the snorting/gurgling I used to get on deceleration. I'd really love to know why that is if anyone has any idea...
exactly! way quieter and less gurgling during downshift between 2500-3000k rpm. in my bmw perf exhaust during down shift right at 3000 rpm, that's the sweetest spot for a loud "pop", but now it is well tamed and not noticeable at all.
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      04-11-2011, 04:51 PM   #157
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exactly! way quieter and less gurgling during downshift between 2500-3000k rpm. in my bmw perf exhaust during down shift right at 3000 rpm, that's the sweetest spot for a loud "pop", but now it is well tamed and not noticeable at all.
Mmmmmmmm performance exhaust. Do want.

My gf said my car was "quieter, less obnoxious and less jerky" with the Cobb. Even though it's a damn rocket now, I liked the gurgles

Ahh well, maybe theyll come back with the next map release
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      04-11-2011, 04:52 PM   #158
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same thing here. my guess they run a bit leaner than most, so your not leaving any risidual fuel in the cumbustion chamber. it's only a guess. I know nothing about actual tuning and what it actually doing.
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      04-11-2011, 04:57 PM   #159
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same thing here. my guess they run a bit leaner than most, so your not leaving any risidual fuel in the cumbustion chamber. it's only a guess. I know nothing about actual tuning and what it actually doing.
Well they tend to be showing a lot more rich under WOT (in a good way).

As far as cruising most tunes target 14.7 AFR. The difference might be controlling throttle and injectors vs load perhaps.
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      04-11-2011, 05:13 PM   #160
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its all in the WG position during cursing. Some tune open the wastegate more then others. The more open the WG the less air the turbos sees, the louder your car.
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      04-11-2011, 05:44 PM   #161
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Does anyone know where to find the release notes for all 2007 beta versions?
I would assume on their website.
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      04-11-2011, 06:32 PM   #162
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^ yea, just gotta wait i guess, maybe Cobb will send us t shirts or license plate frames for our patience :-)
Would love to! Any 2007 owners experiencing the install issue, shoot me a PM with your shipping information and t-shirt size and I'll get something out to you Sorry to all for the inconvenience!

Cheers-
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      04-11-2011, 06:39 PM   #163
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^ yea, just gotta wait i guess, maybe Cobb will send us t shirts or license plate frames for our patience :-)
Would love to! Any 2007 owners experiencing the install issue, shoot me a PM with your shipping information and t-shirt size and I'll get something out to you Sorry to all for the inconvenience!

Cheers-
Lance

Awesome!! Lol I just want my Cobb to work so I can start logging and feeling what everyone is talking about!
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      04-11-2011, 08:10 PM   #164
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im having a difficulty to change map, i did the beta update since my car is an 07, first install, i do see choices of map 0, 91 oct map, 93 oct map, and valet map to choose from. so i picked 93 oct map. and now i want to try out the 91 oct map, plugged in the AP to OBD, loaded the "tuning" and change map, there's nothing in there. can anyone help me if i did something wrong? or do i need to download the map? if so, where? thanks for the help!
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      04-11-2011, 08:27 PM   #165
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You need to reflash to 91 octane map
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      04-11-2011, 08:54 PM   #166
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Dang! I guess I'm one of the unlucky ones. Just tried to install and it stops at 3% and says it cannot communicate. I will have to wait until Cobb figures it out.
Uber
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      04-11-2011, 09:19 PM   #167
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Dang! I guess I'm one of the unlucky ones. Just tried to install and it stops at 3% and says it cannot communicate. I will have to wait until Cobb figures it out.
Uber
you can keep trying. that's what i did, and i finally able to finish it at probably my 2x times.... hahahaha, make sure you have a batt charger ready, since it will take you long time, i drained my battery that way.
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      04-11-2011, 09:22 PM   #168
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You need to reflash to 91 octane map

i just downloaded and saved all the maps into the AP, and just reflashing it by "change map", deng it, 19% and got me an ECU comm error again. i thought i'll be sh!t and stuck. i took out the key, reinsert the key, and flash it again from the recovery mode, phew, thank god, it went through.... hahahahaha, so that's my first time switching map process from 93 -> 91. kinda scary until COBB find out what exactly is happening to us 07...
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      04-11-2011, 09:25 PM   #169
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Question, for those without a battery charger, would hooking up jumper cables to the jump posts in the engine suffice? Obviously they would be connected to another running vehicle?
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      04-11-2011, 09:27 PM   #170
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Question, for those without a battery charger, would hooking up jumper cables to the jump posts in the engine suffice? Obviously they would be connected to another running vehicle?
yea have a running vehicle and kinda just like a jump start procedure would work. that way you can ensure you have enough juice in your batt.
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      04-11-2011, 09:50 PM   #171
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its all in the WG position during cursing. Some tune open the wastegate more then others. The more open the WG the less air the turbos sees, the louder your car.
Oh yea... Duh.
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      04-11-2011, 09:54 PM   #172
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I'm going to try some other things with the Cobb later this week since I am having problems. Somebody I know who tunes is going to see if there is anything I'm missing. If I come across anything I will certainly let you all know. I should be doing this either Wednesday or Thursday.
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      04-12-2011, 11:34 AM   #173
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I'm going to try some other things with the Cobb later this week since I am having problems. Somebody I know who tunes is going to see if there is anything I'm missing. If I come across anything I will certainly let you all know. I should be doing this either Wednesday or Thursday.
Until we can pinpoint the issue, in order to err to the side of safety, I would probably avoid multiple installation attempts after a few failures. Again, we apologize sincerely to everyone for the inconvenience and anyone who has contacted me for a shirt, please let me know when you receive them and if the size is good for ya

Best regards-
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      04-12-2011, 12:53 PM   #174
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      04-12-2011, 05:21 PM   #175
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Quote:
Originally Posted by COBB Tuning View Post
Quote:
Originally Posted by Tuner1984 View Post
I'm going to try some other things with the Cobb later this week since I am having problems. Somebody I know who tunes is going to see if there is anything I'm missing. If I come across anything I will certainly let you all know. I should be doing this either Wednesday or Thursday.
Until we can pinpoint the issue, in order to err to the side of safety, I would probably avoid multiple installation attempts after a few failures. Again, we apologize sincerely to everyone for the inconvenience and anyone who has contacted me for a shirt, please let me know when you receive them and if the size is good for ya

Best regards-
Lance

Could the issue have to do with the rom? Just throwing it out there.
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      04-12-2011, 06:55 PM   #176
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Quote:
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Quote:
Originally Posted by COBB Tuning View Post
Quote:
Originally Posted by Tuner1984 View Post
I'm going to try some other things with the Cobb later this week since I am having problems. Somebody I know who tunes is going to see if there is anything I'm missing. If I come across anything I will certainly let you all know. I should be doing this either Wednesday or Thursday.
Until we can pinpoint the issue, in order to err to the side of safety, I would probably avoid multiple installation attempts after a few failures. Again, we apologize sincerely to everyone for the inconvenience and anyone who has contacted me for a shirt, please let me know when you receive them and if the size is good for ya

Best regards-
Lance

Could the issue have to do with the rom? Just throwing it out there.
How do you mean?

Lance
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