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E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 04-26-2014, 09:03 AM
Wjt5 Wjt5 is offline
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Location: Quantico VA
 
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Mein Auto: 335xi
Talking Cobb V3 vs JB4 vs JB+ quick install

Looking at installing a tuner on my 08 335xi any recommendations? What are you guys running? Any other tuners you can think about that I should consider?

I don't get to do much tracking and just enjoy a little extra HP for the street and occasional track, so I'm strongly looking at the JB+. The V3 though cost more but is way more adjustable and can be completely uninstalled easily. (I'd like to have a quick uninstall when I take it in for service)
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  #2  
Old 04-26-2014, 09:44 AM
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Dwight_Schrute Dwight_Schrute is offline
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Location: Sunny Pacific Northwest
 
Join Date: Feb 2009
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Mein Auto: '10 E92 335i
All three are great products and your assessment is correct about JB+ and Cobb being the easiest to install/uninstall. Not sure you can beat the JB+ for the price but I've heard a lot of people soon want more power after the install.

I've heard the Cobb is more on par with the JB4 when it comes to features and adjustability. I have the JB4 and love it but its a way more intrusive install - you have to get into the ECU - as opposed to just hooking the Cobb up to your OBD port. The JB4 isn't necessarily a difficult install, just more time consuming and physically involving.

Sounds to me you'd be happier with either JB+ or Cobb. May just boil down to price and whether or not the added functionality and power is worth the extra coin to buy the Cobb. I personally think it is.

You'll enjoy whatever you get, I'm fairly certain of that.
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  #3  
Old 04-26-2014, 10:23 AM
SuperTerp SuperTerp is offline
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Hahah so many threads on this bro, and so much readily available information


Quick cause I hate when people scold me and don't answer:

Cobb= Little less HP than JB4, ability to custom tune + (so dose JB4 iso), VERY EASY TO INSTALL

JB4= cheapest, need to know what you're doing under the hood, most hp
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  #4  
Old 04-27-2014, 02:07 PM
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BuraQ BuraQ is offline
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Mein Auto: DCT 335is powered by PTF
Installing Cobb is as simple as pressing couple of buttons, go get something to eat for about 23 minutes. Come back, all done. No tools needed other than being able to read, and you dont get your hands dirty.
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  #5  
Old 04-27-2014, 02:32 PM
Dseverson Dseverson is offline
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Location: Calgary Alberta Canada
 
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Mein Auto: 2011 335i
I just bought the Accessport V3. Easy to install. I'm running the stage 1 aggressive and it makes a noticeable difference.
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  #6  
Old 06-01-2015, 01:52 PM
bcorwin bcorwin is offline
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Location: San Carlos, Ca
 
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Mein Auto: 650i Convertible
I am looking at the JB4 based on the fact mapping can be changed on the fly, two questions:

Can I get one shipped to California and from who?
I will need to uninstall and return to stock every 2 years for smog, how long will the uninstall take?
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  #7  
Old 06-02-2015, 10:15 AM
mike@x-ph.com mike@x-ph.com is offline
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Quote:
Originally Posted by bcorwin View Post
I am looking at the JB4 based on the fact mapping can be changed on the fly, two questions:

Can I get one shipped to California and from who?
I will need to uninstall and return to stock every 2 years for smog, how long will the uninstall take?
JB4 is smog legal.
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  #8  
Old 06-02-2015, 10:28 AM
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Biggiefl Biggiefl is offline
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If you have steering wheel controls you can "shut off" the JB4 or change the map. Not sure but I think you would NOT have to remove it if you can turn off the power....can anyone confirm? I am installing mine tonight.
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  #9  
Old 06-02-2015, 12:20 PM
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James57 James57 is offline
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Quote:
Originally Posted by Biggiefl View Post
If you have steering wheel controls you can "shut off" the JB4 or change the map. Not sure but I think you would NOT have to remove it if you can turn off the power....can anyone confirm? I am installing mine tonight.
If you're talking about for dealer/warranty purposes, a tech could easily discover it by turning it on with the steering wheel buttons. Somebody mentioned that there was a way to disable the buttons, though . . . .
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  #10  
Old 06-03-2015, 05:55 AM
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Biggiefl Biggiefl is offline
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I meant for SMOG purposes. I doubt a state worker would be messing with steering controls.
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  #11  
Old 06-03-2015, 07:43 AM
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James57 James57 is offline
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Location: South Florida
 
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Quote:
Originally Posted by Biggiefl View Post
I meant for SMOG purposes. I doubt a state worker would be messing with steering controls.
Smog? You're here in FL -- there hasn't been inspection since '99 or so.
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2013 E93 335is 6MT * LeMans Blue/Saddle Brown * Custom Wedge MHD flash
Past loves: 2008 335i coupe * 2003 330i sedan * 2001 Boxster S

Past friends: 1999 Accord V6 * 1993 Prelude * 1988 CRX * 1984 Subaru GL * 1976 Gran Torino * 1970 Corona Mark III

[D]rivers of manual transmission cars are in an exclusive club, one whose members are arguably experiencing the true
essence of the Ultimate Driving Machine. Mike Miller

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  #12  
Old 06-03-2015, 09:04 AM
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Biggiefl Biggiefl is offline
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6 posts up...
I am looking at the JB4 based on the fact mapping can be changed on the fly, two questions:

Can I get one shipped to California and from who?
I will need to uninstall and return to stock every 2 years for smog, how long will the uninstall take?
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