Cobb and JB4 Stack

Johnny Boost · 12-12-2014, 04:56 PM

Is anyone running a Cobb custom tune stacked with JB4? If so, how has the experience been and was there a noticeable improvement?

snaimpally · 12-12-2014, 05:54 PM

http://www.e90post.com/forums/showthread.php?t=1055325

Johnny Boost · 12-12-2014, 06:18 PM

Quote:

Originally Posted by snaimpally

http://www.e90post.com/forums/showthread.php?t=1055325

I guess I should have specified. I meant on a stock turbo. Would there be a benefit? I understand that people with upgraded turbos are running this set up.

mike@x-ph.com · 12-13-2014, 11:05 AM

I do.
Cobb controls fuel, afr and ignition while the Jb4 controls boost.
Piggy do a better job controlling boost at high rpm, it is also a lot easier to adjust the jb4 when you doing pulls ( raise or lower boost as you see fit).

Jeff@TopGearSolutions · 12-13-2014, 11:17 AM

This is an N55 thread.

mike@x-ph.com · 12-13-2014, 11:36 AM

Quote:

Originally Posted by Jeff@TopGearSolutions

This is an N55 thread.

Is this reply directed to me ?

Johnny Boost · 12-13-2014, 04:41 PM

Quote:

Originally Posted by mike@x-ph.com

I do.
Cobb controls fuel, afr and ignition while the Jb4 controls boost.
Piggy do a better job controlling boost at high rpm, it is also a lot easier to adjust the jb4 when you doing pulls ( raise or lower boost as you see fit).

This is the info I was looking for. Thank you! I think I'm going to run that set up and have PTF create a custom backend map for e50.

snaimpally · 12-13-2014, 07:02 PM

Quote:

Originally Posted by mike@x-ph.com

Is this reply directed to me ?

LOL! I think it was.

However, regardless of whether its an N54 or an N55, the stacking works the same way in terms of what Cobb controls and what JB4 controls so that was uncalled for IMO.

mike@x-ph.com · 12-13-2014, 10:18 PM

Quote:

Originally Posted by Johnny Boost

This is the info I was looking for. Thank you! I think I'm going to run that set up and have PTF create a custom backend map for e50.

If you are going to run PTF custom map, you won't need a JB4.
PTF use race logic to target high boost targets.
Race logic is not available for regular users, only pro-tuners.

Quote:

Originally Posted by snaimpally

LOL! I think it was.

However, regardless of whether its an N54 or an N55, the stacking works the same way in terms of what Cobb controls and what JB4 controls so that was uncalled for IMO.

That's why i was surprised by the reply

12-12-2014, 04:56 PM	#1
Johnny Boost Colonel 324 Rep 2,014 Posts Drives: '21 M850i GC Join Date: May 2013 Location: TBD iTrader: (0)	Cobb and JB4 Stack Is anyone running a Cobb custom tune stacked with JB4? If so, how has the experience been and was there a noticeable improvement? __________________ WedgePerformance E40 MHD \| Performance Exhaust Mod \| BMS DP \| Vibrant 1790 \| BMS Intake \| VRSF CP \| xHP Stage 3 Michelin PSS \| M3 Control Arms LUX v4 LEDs \| Shadowline Grills \| Lip Spoiler
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12-12-2014, 05:54 PM	#2
snaimpally Major 136 Rep 1,192 Posts Drives: 2011 335i MT Join Date: Mar 2014 Location: Austin, TX iTrader: (9) Garage List 2011 BMW 335i [0.00]	http://www.e90post.com/forums/showthread.php?t=1055325 __________________ PTF Map, Pure Turbo Stage 1, GFB DV+, Mfactory LSD, AA FMIC, B12 Pro Kit, M3 FCA, AR DP and Dynavin N6, Mosconi AS100.4, AS100.4, AS200.2, Micro Precision tweeters & woofers, Esotar2 1200
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12-13-2014, 11:05 AM	#4
mike@x-ph.com BimmerPost Supporting Vendor 24397 Rep 191,249 Posts Drives: 07-335/12-328/18-M4/21-M4CP Join Date: Sep 2013 Location: Las Vegas iTrader: (23)	I do. Cobb controls fuel, afr and ignition while the Jb4 controls boost. Piggy do a better job controlling boost at high rpm, it is also a lot easier to adjust the jb4 when you doing pulls ( raise or lower boost as you see fit). __________________ Check out our current sale by clicking on this link! https://x-ph.com/sale/ Phone number 702-494-9435
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12-13-2014, 11:17 AM	#5
Jeff@TopGearSolutions 3442 Rep 79,211 Posts Drives: C6 Z06, 09 335i, 10 335xi Join Date: Dec 2008 Location: www.TopGearSolutions.com iTrader: (37)	This is an N55 thread.
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