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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > JB4 Stage 2 Maps



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      04-26-2012, 11:57 PM   #1
YanniPakravanE90
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JB4 Stage 2 Maps

im installing my jb4 stage 2 on my n55 335 tomorrow and i have a dp and exhaust system i was wondering which map i should use with this set up, also i was wondering what the different maps do and how many there are to my knowledge there is 7 but i could b wrong please !!
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      04-27-2012, 12:05 AM   #2
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map 2
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      04-27-2012, 02:25 AM   #3
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map 1 unless u are running race gas with a dp- you should upgrade ur cp as well
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      04-27-2012, 12:50 PM   #4
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As long as you run 93 octane with your current setup, run map 2. Map 7 is for race gas.

Map 0: Stock bypass. This is the only map you may use a BT cable with.
Map 1: 13psi (suggested for most stock applications. Conservative mapping.)
Map 2: 14.5psi (suggested for bolt on mods with 93 octane. Close to JB3 map 7.)
Map 3: Progressive meth (see guide to enable)
Map 4: Stock map w/ CAN active. Soon to be our economy map.
Map 6: Custom map. Active but be careful with it.
Map 7: 16.5psi. A light weight race map.

Last edited by fishbone0701; 04-27-2012 at 02:00 PM.
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      04-28-2012, 08:48 AM   #5
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Need some help on this question , take a jb4 stage 1 an intake Or stage 2 with intake as well , my whole thing is I don't want the charge pipe to snap and or run into any issues with the car it's a lease .

If you were me what would you do.
Stage 1 n play it safe
Or stage 2
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      04-28-2012, 10:31 AM   #6
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The charge pipes are known to fail even under stock tune. I'm leasing mine and still put the cp on and have a dp with the stage 2. Go big or don't do it at all.
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      04-28-2012, 11:00 AM   #7
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This is incorrect, the correct one would be
Maps:

Map 0: Stock bypass. This is the only map you may use the OBDII diagnostic port with. Set to map 0 before dropping off for service, using a BT, etc.
Map 1: 12.5psi (suggested for most applications. The higher the octane the more power you'll make.)
Map 2: 14psi (suggested for those with a downpipe and 93 octane. May also require octane booster on top of 93 octane for optimal performance. We suggest NOS Race Formula w/ MMT.)
Map 3: Progressive meth mapping with flow sensor failsafe. See guide to enable. Meth use isn't supported/suggested without a flow sensor and map 3.
Map 4: Stock map w/ CAN active. Soon to be our economy map.
Map 5: Not developed for N55 yet
Map 6: Custom tuning map.
Map 7: 16psi race gas map. 100+ RM2 octane race gas required.


reference and proof:
http://www.n54tech.com/forums/showthread.php?t=13189

Quote:
Originally Posted by fishbone0701 View Post
As long as you run 93 octane with your current setup, run map 2. Map 7 is for race gas.

Map 0: Stock bypass. This is the only map you may use a BT cable with.
Map 1: 13psi (suggested for most stock applications. Conservative mapping.)
Map 2: 14.5psi (suggested for bolt on mods with 93 octane. Close to JB3 map 7.)
Map 3: Progressive meth (see guide to enable)
Map 4: Stock map w/ CAN active. Soon to be our economy map.
Map 6: Custom map. Active but be careful with it.
Map 7: 16.5psi. A light weight race map.
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      04-28-2012, 11:09 AM   #8
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Any info on boost levels for jb4 stage 1 ??
If I get stage 2 n run map 1 and CP snaps I can remove chip n BMW is gonna cover the issue no problem ??
Or do I face an issue ?
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      04-28-2012, 11:11 AM   #9
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I guess I am only run map 1 then
mods intake, axle back, cp
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