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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N55 Turbo Engine / Drivetrain / Exhaust Modifications > JB4 and TTFS HPFP?
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      10-18-2019, 09:43 AM   #1
StuyMac
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JB4 and TTFS HPFP?

Can you just fit a TTFS HPFP and the JB4 will deal with it?

Do you require anyother calibration changes, or change any settings in the JB4?
This would be on a 2013 F31 335i (pwg).

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      10-18-2019, 11:09 AM   #2
T_H_O_M_A_S
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it will depend on the tune of car , the jb4 only tricks the car into making more power , jb4 doenst control a hpfp , your ecu does that
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      10-18-2019, 11:54 AM   #3
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Probably need to make adjustments in the back end flash for the pump to operate properly.
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      10-18-2019, 12:50 PM   #4
insane11
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I heard that you will need a flash tune to get the voltage and the flow rate to work properly.. Jb4 can't do those.
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      10-24-2019, 05:25 AM   #5
StuyMac
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Thanks guys. I knew that was the case, but with new firmware etc as thses things become more popular thought it was worth an ask
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      10-24-2019, 11:52 AM   #6
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Would suggest stacking mhd with the jb4. That way your ecu controls everything properly and the jb4 handles the boost and logging. Cheaper then buying a stand alone flash. Jb4 back end flashes are free. You would just need to buy the mhd flashing license, which is like $250 if i remember correctly.
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