[bigdonnyd40]

Hi folks. I currently have a 2018 540i so obviously it has the gen 1 B58.

I was always planning on running the car with stage 2+/stage 2 HPFP.

I just received the TU pump (Supra pump) from the higher output B58s. It's a Bosch part and the part number is: 13518631642

I've been reading about how since the TU pumps run double the pressure, there is a risk of injector failure on the gen 1 B58s which can cause them to fail open and flood the cylinder which results in engine failure. I've also read that the DME cuts fuel pressure to safe levels.

Has anyone run the HPFP for a long period of time or have more info on this? I'd love to run it for the power and torque but I want to keep this car for a long time.

Thanks

[Doctor X]

Originally Posted by bigdonnyd40

Hi folks. I currently have a 2018 540i so obviously it has the gen 1 B58.

I was always planning on running the car with stage 2+/stage 2 HPFP.

I just received the TU pump (Supra pump) from the higher output B58s. It's a Bosch part and the part number is: 13518631642

I've been reading about how since the TU pumps run double the pressure, there is a risk of injector failure on the gen 1 B58s which can cause them to fail open and flood the cylinder which results in engine failure. I've also read that the DME cuts fuel pressure to safe levels.

Has anyone run the HPFP for a long period of time or have more info on this? I'd love to run it for the power and torque but I want to keep this car for a long time.

Thanks

Been running Stage 2+ for almost 20k miles, knock on wood everything feels just as it did day one.

The running ethanol really wakes up the B58 and IMO was a huge jump for 91 tune -> E30 tune also helps with the smell/fumes from going catless highly highly recommended.

Only thing that really changes day to day is the louder ticking noise from the new pump.

[buddyboy]

Originally Posted by bigdonnyd40

Hi folks. I currently have a 2018 540i so obviously it has the gen 1 B58.

I was always planning on running the car with stage 2+/stage 2 HPFP.

I just received the TU pump (Supra pump) from the higher output B58s. It's a Bosch part and the part number is: 13518631642

I've been reading about how since the TU pumps run double the pressure, there is a risk of injector failure on the gen 1 B58s which can cause them to fail open and flood the cylinder which results in engine failure. I've also read that the DME cuts fuel pressure to safe levels.

Has anyone run the HPFP for a long period of time or have more info on this? I'd love to run it for the power and torque but I want to keep this car for a long time.

Thanks

I ran the TU pump on my last B58 car for over a year with stage 2+ with no issues, there is no link to injector failure from a TU pump, the injector failures can happen on any B58, more common on the earlier models. If you want to keep the car for a long time, factor in frequent oil changes, spark plug changes, coil packs and injectors , same as any of the turbo BMW's, run highest fueling you can get and custom tune to your mods would yield best results.

Im still on original stock injectors and stage 3 setup for the last 18 months, no issues so far(touch wood!) Ill be adding a fresh set of Bosch injectors with the next round of mods before the summer

[thecooltype]

Originally Posted by bigdonnyd40

Hi folks. I currently have a 2018 540i so obviously it has the gen 1 B58.

I was always planning on running the car with stage 2+/stage 2 HPFP.

I just received the TU pump (Supra pump) from the higher output B58s. It's a Bosch part and the part number is: 13518631642

I've been reading about how since the TU pumps run double the pressure, there is a risk of injector failure on the gen 1 B58s which can cause them to fail open and flood the cylinder which results in engine failure. I've also read that the DME cuts fuel pressure to safe levels.

Has anyone run the HPFP for a long period of time or have more info on this? I'd love to run it for the power and torque but I want to keep this car for a long time.

Thanks

I have been stage 2+ for 15 months now. Longest rd trip done has been to Niagara Falls from Long island. total of around 800 miles. No issues with b58tu pump since installed...

[thecooltype]

Originally Posted by Doctor X

Been running Stage 2+ for almost 20k miles, knock on wood everything feels just as it did day one.

The running ethanol really wakes up the B58 and IMO was a huge jump for 91 tune -> E30 tune also helps with the smell/fumes from going catless highly highly recommended.

Only thing that really changes day to day is the louder ticking noise from the new pump.

wow I don't hear this at all.
QQ do you have loud upshift farts? I hear it sometimes but I wouldn't say it's loud

[Doctor X]

Originally Posted by thecooltype

wow I don't hear this at all.
QQ do you have loud upshift farts? I hear it sometimes but I wouldn't say it's loud

I'm running XHP Stage 3 tune for transmission and sadly I don't hear any upshift fart

I really wish I did lol, I heard you can reduce the torque on upshift to hear it but I never got to get it dialed in correctly.

[DBO]

Originally Posted by Doctor X

I'm running XHP Stage 3 tune for transmission and sadly I don't hear any upshift fart

That's odd.. I'm on BM3 stage 2 98 map with XHP stage 3 and definitely get them if shifting in Sport+. Are you running a pipe and different exhaust system or is that still stock?

[thecooltype]

Originally Posted by DBO

That's odd.. I'm on BM3 stage 2 98 map with XHP stage 3 and definitely get them if shifting in Sport+. Are you running a pipe and different exhaust system or is that still stock?

still stock exhaust and I believe this is holding it back

[Doctor X]

Originally Posted by DBO

That's odd.. I'm on BM3 stage 2 98 map with XHP stage 3 and definitely get them if shifting in Sport+. Are you running a pipe and different exhaust system or is that still stock?

All i have is the stock mufflers on, removed the resontators+downpipes.

[andrew_y]

Originally Posted by buddyboy

I ran the TU pump on my last B58 car for over a year with stage 2+ with no issues, there is no link to injector failure from a TU pump, the injector failures can happen on any B58, more common on the earlier models. If you want to keep the car for a long time, factor in frequent oil changes, spark plug changes, coil packs and injectors , same as any of the turbo BMW's, run highest fueling you can get and custom tune to your mods would yield best results.

Im still on original stock injectors and stage 3 setup for the last 18 months, no issues so far(touch wood!) Ill be adding a fresh set of Bosch injectors with the next round of mods before the summer

Hi, I was just wondering about the injectors. I thought I saw something that suggested there are slightly different versions of injectors for the B58 and it was important to learn the correct version. Is there any truth to this, and if so, do you know how to go about learning the correct version?
Thanks.

[andrew_y]

Did you need to , or should we be sure to, purchase an upgraded high/low pressure lines or any other adapters or parts with getting a B58TU HPFP?

[M5johnny]

The pump by itself won't run higher pressures, the ECU targets the pressure, so while the pump has more capacity, unless the car is mapped for higher pressure, you won't get it.

The TU pump will however flow more at the same pressure.

[mtamosh]

Originally Posted by bigdonnyd40

Hi folks. I currently have a 2018 540i so obviously it has the gen 1 B58.

I was always planning on running the car with stage 2+/stage 2 HPFP.

I just received the TU pump (Supra pump) from the higher output B58s. It's a Bosch part and the part number is: 13518631642

I've been reading about how since the TU pumps run double the pressure, there is a risk of injector failure on the gen 1 B58s which can cause them to fail open and flood the cylinder which results in engine failure. I've also read that the DME cuts fuel pressure to safe levels.

Has anyone run the HPFP for a long period of time or have more info on this? I'd love to run it for the power and torque but I want to keep this car for a long time.

Thanks

Did you buy it? I want to buy it too. What is the part code?

[BWilson263]

I have both pumps but, using the stock fuel pump as of now. I removed the TU pump because I went from Stage 2+ back to Stage 1 93 octane. There's now a Stage 1 93+ map on the BM3 website. Should I use the TU pump or keep the stock fuel pump? Any advantage or disadvantage when using the TU pump with a Stage 1 93+ map?

[thecooltype]

Originally Posted by BWilson263

I have both pumps but, using the stock fuel pump as of down. I removed the TU pump because I went from Stage 2+ back to Stage 1 93 octane. There's now a Stage 1 93+ map on the BM3 website. Should I use the TU pump or keep the stock fuel pump? Any advantage or disadvantage when using the TU pump with a Stage 1 93+ map?

Just curious why did you go back to stage 1? Been running the TU pump for almost 3 yrs and still fine

[BWilson263]

Originally Posted by thecooltype

Just curious why did you go back to stage 1? Been running the TU pump for almost 3 yrs and still fine

I removed my catted downpipe to pass emissions. Since passing I just decided to stay stage 1.