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      03-20-2022, 12:31 PM   #2
Sample
Second Lieutenant
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Drives: E90 335i/G05 X5 xDrive40i
Join Date: Apr 2011
Location: US

iTrader: (6)

Racechip is cheaper and doesn’t need to connect to the obd port. Racechip is easier to install.

JB4 has more features. JB4 app can change maps, can display diff readings like boost, can log, and can read/clear error codes. I think Racechip just changes maps.

Last edited by Sample; 03-20-2022 at 12:37 PM..
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