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Max Fotography Max Fotography is offline
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Default Buy new or used JB4 G5 ISO - 12-13-2015, 01:41 PM

I would like to purchase a JB4 soon. I was considering buying a used one so I could save a little money but I wanted to know what everyone's opinion is on this. Buy a new or used one?
I greatly appreciate any responses!
Thanks!
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Default 12-13-2015, 01:46 PM

With a used tuner no BMS warranty or support is provided, other than the support forum here. Also keep in mind there have been some board and component revisions.

If you've worked with the JB4 before and won't need help then a used tuner is a way to save a few dollars. If this is your first time working with the JB4 you should really get a new one.


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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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Max Fotography Max Fotography is offline
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Default 12-13-2015, 02:08 PM

Thanks! I appreciate the information!
What board and component revisions are you referring to?
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Default 12-13-2015, 02:27 PM

Transistors and other components have been updated and improved over the years.


Burger Motorsports
Home of the Worlds fastest N20s, N54s, N55s, S55s, N63s, and S63s!

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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