Gen. 1 B58 flashed back to stock with TU pump

CatchF22DirtyF30 · 05-10-2024, 04:06 PM

Hey all, needing to pass emissions and have to flash back to stock. Can I safely leave the TU pump in on a absolutely stock tune?

cooolone2 · 05-11-2024, 04:07 PM

Why not? On a stock tune, you'll be opening the Jets on the injector in stock configuration which the pump can easily handle. I wouldn't worry... It's when you need more fuel under tuned conditions where an issue occurs if enough fuel isn't provided.

What's the worst that happens? You fail inspection?

Good Luck

Dom147 · 05-13-2024, 01:04 PM

I'm a lil late but yeah, you should be fine, just make sure to set it to the TU pump in your options for the HPFP on the stock tune otherwise your car might not start.

n55david · 05-14-2024, 05:25 AM

Quote:

Originally Posted by CatchF22DirtyF30

Hey all, needing to pass emissions and have to flash back to stock. Can I safely leave the TU pump in on a absolutely stock tune?

Yes.. you don't change anything for the pump when it's tuned anyway..

n55david · 05-14-2024, 05:26 AM

Quote:

Originally Posted by Dom147

I'm a lil late but yeah, you should be fine, just make sure to set it to the TU pump in your options for the HPFP on the stock tune otherwise your car might not start.

There is no option for the tu pump man, what sre you talking about?

Dom147 · 05-14-2024, 06:30 AM

Quote:

Originally Posted by n55david

There is no option for the tu pump man, what sre you talking about?

Oh yeah, I just checked, you’re right😅. I must’ve been imagining things.

Thanks for recognizing that

CatchF22DirtyF30 · 05-14-2024, 01:05 PM

Thanks guys! Here is a pic for fun.

encreed564 · 05-14-2024, 01:14 PM

Yeah, you can totally leave the TU pump in with a stock tune. It shouldn't cause any issues since it's just there for extra fueling when you're tuned up.

05-10-2024, 04:06 PM	#1
CatchF22DirtyF30 Private First Class 108 Rep 131 Posts Drives: BMW \| B58 F22 \|\| Audi B9 S4 Join Date: Jan 2023 Location: Chicago iTrader: (0) Garage List 2017 BMW M240i [9.50] 2019 Audi S4 [10.00]	Gen. 1 B58 flashed back to stock with TU pump Hey all, needing to pass emissions and have to flash back to stock. Can I safely leave the TU pump in on a absolutely stock tune?
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05-11-2024, 04:07 PM	#2
cooolone2 Captain 639 Rep 718 Posts Drives: 20' M240iX B58, 01' 330XI E46 Join Date: Jul 2019 Location: NY, USA iTrader: (0)	Why not? On a stock tune, you'll be opening the Jets on the injector in stock configuration which the pump can easily handle. I wouldn't worry... It's when you need more fuel under tuned conditions where an issue occurs if enough fuel isn't provided. What's the worst that happens? You fail inspection? Good Luck
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05-13-2024, 01:04 PM	#3
Dom147 Second Lieutenant 103 Rep 276 Posts Drives: 2014 BMW 228i, 2017 BMW M240i Join Date: Apr 2021 Location: Northern Virginia iTrader: (1) Garage List 2017 BMW M240i [0.00]	I'm a lil late but yeah, you should be fine, just make sure to set it to the TU pump in your options for the HPFP on the stock tune otherwise your car might not start.
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05-14-2024, 01:05 PM	#7
CatchF22DirtyF30 Private First Class 108 Rep 131 Posts Drives: BMW \| B58 F22 \|\| Audi B9 S4 Join Date: Jan 2023 Location: Chicago iTrader: (0) Garage List 2017 BMW M240i [9.50] 2019 Audi S4 [10.00]	Thanks guys! Here is a pic for fun. Attached Images
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05-14-2024, 01:14 PM	#8
encreed564 Registered 3 Rep 3 Posts Drives: BMW X4 M Join Date: Nov 2021 Location: Newyork iTrader: (0)	Yeah, you can totally leave the TU pump in with a stock tune. It shouldn't cause any issues since it's just there for extra fueling when you're tuned up.
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