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      09-30-2016, 01:35 AM   #1
SERBM5
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Wtb jb4 with or w/o bcm

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      09-30-2016, 07:38 AM   #2
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You'll need the BCM to use most if the maps
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      09-30-2016, 08:10 AM   #3
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Quote:
Originally Posted by 13M5F10
You'll need the BCM to use most if the maps
See I didn't know that. Ok. With bcm than I have a local ess dealer here that can get me a flash tune should that route be better
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      09-30-2016, 08:29 AM   #4
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Quote:
Originally Posted by SERBM5
Quote:
Originally Posted by 13M5F10
You'll need the BCM to use most if the maps
See I didn't know that. Ok. With bcm than I have a local ess dealer here that can get me a flash tune should that route be better
You have three options:

JB4 + BCM w/o backend flash tune

Flash ONLY

JB4+BCM+Backend flash tune

My vote would go to the JB4+BCM with the backend tune

The Boost Control Module is needed with the JB4. Terry doesn't recommend using the maps without it.
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      09-30-2016, 08:30 AM   #5
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Quote:
Originally Posted by 13M5F10
Quote:
Originally Posted by SERBM5
Quote:
Originally Posted by 13M5F10
You'll need the BCM to use most if the maps
See I didn't know that. Ok. With bcm than I have a local ess dealer here that can get me a flash tune should that route be better
You have three options:

JB4 + BCM w/o backend flash tune

Flash ONLY

JB4+BCM+Backend flash tune

My vote would go to the JB4+BCM with the backend tune

The Boost Control Module is needed with the JB4. Terry doesn't recommend using the maps without it.
Thank you. We'll go jb4 bcm than backend
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      09-30-2016, 09:05 AM   #6
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Can you briefly tell me the difference between all 3.



JB4 + BCM w/o backend flash tune
I assume this is just like off the shelf map from JB4.
All users share same exact tune/file


Flash ONLY
This is non JB4, it's from other tuner tune (dyno tune or just ECU flash from other vendors/tuners)



JB4+BCM+Backend flash tune
Is this custom tune with JB4+BCM already installed?


Am I correct?
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      09-30-2016, 09:45 AM   #7
13M5F10
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JB4 + BCM w/o backend flash tune
I assume this is just like off the shelf map from JB4.
All users share same exact tune/file

Correct, BMS has several maps preloaded on the JB4. There is map 6 where the user can customize it some.


Flash ONLY
This is non JB4, it's from other tuner tune (dyno tune or just ECU flash from other vendors/tuners) Correct



JB4+BCM+Backend flash tune
Is this custom tune with JB4+BCM already installed? A backend flash is an ECU flash tune designed to generally control fueling and timing amongst other things, leaving the piggyback to control boost. The JB4 can only take you so far. As you push more power and/or start using meth/e85...the fuel demands change and the car can only adapt so much. This is where the backend flash helps. In other words, your car will run more efficiently and in turn, produce more power over JB4 alone.


FROM BMS:
Map 0: JB4 disabled
Map 1: 4-5psi over stock additive. Suggested for most pump gas applications with and without BCM.
Map 2: 22psi peak absolute. BCM required. In some cases we've found this map maxes out the factory fuel trims. In those cases only map1 or map3 can be used without meth injection.
Map 3: 18psi peak absolute.
Map 4: Stock map w/ CANbus enabled
Map 5: //M map ramping boost up to redline (BETA)
Map 6: Custom target map
Map 7: 25psi peak (e.g. race gas, BCM required)
Map 8: Progressive meth map. Peak boost based on meth additive. 0 = 19psi, 75 = 30psi. BCM suggested.

Note without BCM all maps, especially the higher target maps, will under target on boost.
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      09-30-2016, 10:39 AM   #8
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Thanks 13M5F10 for detail explanation
I'm looking for a F10 M5 and been looking for mods already
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