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Z4ROWEN Z4ROWEN is offline
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Car: BMW E89 Z4 N20
Exclamation Z4 E89 N20 JB4 EWG ISSUE - 08-06-2021, 05:50 AM

I have an issue with connecting with jb4 to ewg.
I got fault code 002CAF EWG position sensor shortcut
I connected the wiring connections correctly according to the instruction. (purple pin 9 and blue 16)
every time i connect the ewg connector it maintains the pressure.
I tried to use these files n20_jb4_x1_3.hex and n20-obdII-ewg-7.hex.
Firmware version:70/3//5
When i convert jb4 harness to oem the car runs normally and no fault occurs

I look forward to your help on the matter.
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Steve @ BMS/Fuel-It!'s Avatar
Steve @ BMS/Fuel-It! Steve @ BMS/Fuel-It! is offline
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Default 08-06-2021, 10:53 AM

Send pictures of your install in to our support@burgertuning.com team. They can assist you and replace the harness if needed.



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Z4ROWEN Z4ROWEN is offline
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Default 10-13-2021, 01:46 AM

I still can't start the jb4. We have checked the connections at least 100 times. We can't run ewg when the unit is changed. Turbo does not work even on map 0. I have been waiting for an e-mail from Ando for 6 days, please help.
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Terry @ BMS's Avatar
Terry @ BMS Terry @ BMS is offline
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Default 10-13-2021, 08:24 AM

There is no EWG support for the the Z4 models.... If you added a connector leave it unused.


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It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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Z4ROWEN Z4ROWEN is offline
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Default 10-13-2021, 09:33 AM

if that was so, what have we been striving for for how many months? You asked why I was redirected from the mail, if I made the right connection. Why are you selling this device then what's the point?
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Terry @ BMS's Avatar
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Default 10-14-2021, 08:04 AM

You said above you added in the JB4 EWG connector yourself. Just unplug it from the wastegate and set it aside as Z4 N20 firmware does not support it.


Burger Motorsports
Home of the JB4 the worlds most popular turbocharged tuning system!

It is the sole responsibility of the purchaser and installer of any BMS part to employ the correct installation techniques required to ensure the proper operation of BMS parts, and BMS disclaims any and all liability for any part failure due to improper installation or use. It is the sole responsibility of the customer to verify that the use of their vehicle and items purchased comply with federal, state and local regulations. BMS claims no legal federal, state or local certification concerning pollution controlled motor vehicles or mandated emissions requirements. BMS products labeled for use only in competition racing vehicles may only be used on competition racing vehicles operated exclusively on a closed course in conjunction with a sanctioned racing event, in accordance with all federal and state laws, and may never be operated on public roads/highways. Please click here for more information on legal requirements related to use of BMS parts.
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