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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 > ECU Tune for 335is



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      02-01-2012, 02:55 PM   #1
Abenitez
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ECU Tune for 335is

Hey guys, just purchased a 335is and I wanted to buy either a chip or a flash software. I hear the JB4 is the best PNP. I have been comparing the JB4, the COBB Accessport and Active Autowerke's new flash for the 335is. I also want something that gives great power, a daily driver, reliability and easy to install/uninstall. I see the JB4 takes roughly 45 mins (what I hear), the COBB takes 18 minutes to go from stock to tuned, and the AA is just as simple installing/uninstalling VIA OBDII port. Any reccomendations? Thanks in advance !
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      02-01-2012, 03:06 PM   #2
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welcome fellow is brother. go Cobb. I am getting one as well.
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      02-01-2012, 03:08 PM   #3
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COBB for flash tuning
JB4 or Procede if you want to go piggyback.

Don't bother with the AA tune, it's not nearly as good as the three listed above and costs more than two of them.
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      02-01-2012, 03:10 PM   #4
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Skip the AA. Your choices are Cobb for flash and JB4 and Procede for piggies. Cobb is the easiest to uninstall, the pigs will give you more flexibility. The whole topic has been beaten to death around here. Please search for more details. There is a sticky.

edit:
Guys post quickly around here. I agree with what BDC said above.
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      02-01-2012, 03:38 PM   #5
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My only worry about the COBB is the following :

"Unfortunately, there are not a whole lot of dyno numbers and comparison charts out on the 335is tuning. We did do a stock comparison to our Stage1 mapping on a 2011 335is and peak numbers were 298 whp 371 wtq, while stock numbers were 277 whp 351 wtq compared with a stock 335i making 240 whp 273 wtq on our same dyno. 335is graph available here. If there is anything else, please let me know.

Thanks,

Tim Weiss
Sales/Tech Support"

I contacted COBB to have a better idea and received the information above.... Doesn't seem like a whole lot of gain. IMO. Only +22 whp and + 20 wtq. (See this link)

http://accessecu.com/dyno/graph.php?...rgb2=204000000

Anyone?
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Last edited by Abenitez; 02-01-2012 at 03:49 PM.
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      02-01-2012, 03:44 PM   #6
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As others have said, the COBB is a great choice if you're looking to a flash tuner. You will also be able to reflash the car back to it's stock settings as well if you need to pay the dealership a visit. It'll give the car a bit more kick, is reliable, and is the easiest to install/uninstall which is exactly what you're looking for!
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      02-01-2012, 04:16 PM   #7
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remember that the overboost only lasts for 7 seconds. when you are tuned...you will always be in overboost. I tested the 93oct map stage 1 on my car from a friends Cobb ap and there was a good improvement on the top end. not as big of a difference from a regular 335i but still nice.
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      02-01-2012, 04:21 PM   #8
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Quote:
Originally Posted by KG3356MT View Post
remember that the overboost only lasts for 7 seconds. when you are tuned...you will always be in overboost. I tested the 93oct map stage 1 on my car from a friends Cobb ap and there was a good improvement on the top end. not as big of a difference from a regular 335i but still nice.
Agreed. Cobb is like permanent overboost...
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      02-01-2012, 04:29 PM   #9
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Besides overall hp/tq gains another thing to consider is your comfort level with tuning your car. With COBB you pick a desired map, plug the AP into your OBDII port and flash the ECU. Pretty simple. With piggy backs the initial setup requires accessing the ECU and installing the connectors. If you're like me I wouldn't trust myself to do this. Pretty sure my car would explode if I attempted to mess with the ECU connectors. So COBB is a no brainer for me. Now if you are mechanically inclined then piggy backs are the way to go. And as squirrel mentioned piggybacks (at this current point) are more flexible and give you more tuning parameters to tweak (not too mention meth integration).
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      02-01-2012, 04:47 PM   #10
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Remember Giac!!!
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      02-01-2012, 05:02 PM   #11
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Guys im going with the COBB Accessport! Just spoke with Alan fomr **********s.com and he hooked me up with not only a great price, but also a few good reasons why COBB beats the best. Looking forward to testing out the product! Thanks for the help Alan and thanks for the input guys!
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      02-01-2012, 05:19 PM   #12
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Mine stock was 286whp I would like to get up 350whp.








Quote:
Originally Posted by BMWE92335i View Post
My only worry about the COBB is the following :

"Unfortunately, there are not a whole lot of dyno numbers and comparison charts out on the 335is tuning. We did do a stock comparison to our Stage1 mapping on a 2011 335is and peak numbers were 298 whp 371 wtq, while stock numbers were 277 whp 351 wtq compared with a stock 335i making 240 whp 273 wtq on our same dyno. 335is graph available here. If there is anything else, please let me know.

Thanks,

Tim Weiss
Sales/Tech Support"

I contacted COBB to have a better idea and received the information above.... Doesn't seem like a whole lot of gain. IMO. Only +22 whp and + 20 wtq. (See this link)

http://accessecu.com/dyno/graph.php?...rgb2=204000000

Anyone?
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      02-01-2012, 05:32 PM   #13
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Don't forget to look into other options if you're looking for more power with less heat/work out of the turbos...

I'd suggest spending a couple nights researching about tuning principles and making a more informed decision.

One thing to consider- Try not to blindly follow/believe advice from most people on here. In general, most people on these forums are completely inexperienced, with no knowledge or skill, and blindly promote because they do not know otherwise...so do not take anyone's advice for fact. Myself included. Not directed at anyone in this thread; just in general.

Last edited by BrianMN; 02-01-2012 at 05:55 PM.
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      02-01-2012, 05:46 PM   #14
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Good Choice Let us know how it goes.. If you get bored with s1 power, there is always Stage2+
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      02-01-2012, 05:59 PM   #15
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      02-01-2012, 11:08 PM   #16
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Quote:
Originally Posted by JB335 View Post
Cobb
Does COBB stage 1 work with n54 dct or does the dct slip?
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      02-01-2012, 11:12 PM   #17
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stage 1 will be fine.
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      02-01-2012, 11:56 PM   #18
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http://e89.zpost.com/forums/showthread.php?t=549301

The guy in this thread claims to have issues with his Z4 n54 dct.
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      02-01-2012, 11:59 PM   #19
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The 335is is a different animal then the 335i with its whp being pretty close to its advertised hp, the factory tune is already at or near the first level tunes from some vendors. On 93 octane mine dynoed, pure stock, at 314whp on a Dynojet rear wheel dyno.

I was told to expect around 310/312whp by the guys at Burger Motorsports on a Dynojet. With the JB4 on Map 2 running 94.5 est. octane & no other add-ons it dynoed at 365whp on the same machine.

As was mentioned above the 370ftlbs of torque is there all the time not just for the seven seconds that the stock IS tune provides.
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      02-02-2012, 12:00 AM   #20
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Quote:
Originally Posted by BMWPWR View Post
http://e89.zpost.com/forums/showthread.php?t=549301

The guy in this thread claims to have issues with his Z4 n54 dct.
Hmm now you've got me thinking...

Only one way to find out lol. I'll keep you guys posted as to my progress. Thanks everyone!!!
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      02-02-2012, 03:51 AM   #21
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Man I the JB4 is everthing you need in a tune. Im telling you, in my own experience (which I have had both) and I promise the JB4 the choice for you. And COBB's customer service is horrible in my opinion.
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      02-02-2012, 03:58 AM   #22
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Quote:
Originally Posted by boostaholic786 View Post
Man I the JB4 is everthing you need in a tune. Im telling you, in my own experience (which I have had both) and I promise the JB4 the choice for you. And COBB's customer service is horrible in my opinion.
I know Terry's service is excellent but I have had nothing but awesome service from COBB unlike another tuning company...


Quote:
Originally Posted by BMWPWR View Post
http://e89.zpost.com/forums/showthread.php?t=549301

The guy in this thread claims to have issues with his Z4 n54 dct.
Interesting, I thought your question was if the DCT gearbox can handle the torque of a stage 1 tune.
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