Help with these fuel pressure regulators

[f4m0u5]

Im hunting for a true 5 bar fpr. From what i read it cannont be a modified 4 bar or crushed 4 bar. It has to be a actual 5 bar fpr non modified becuase the curve is different with the boost/ vac to it. I know bosch has one that is very hard to find and super expensive B280 550 113/2

I have read alot of stories of problems with the modified ones so staying clear from those.

Does any one use the newer style o34 adjustible fpr? Does it still have the same pressure curve with boost/vac hooked up to it? Or when at 5 bar doesn it respond like a crushed 4 bar?


How about o34s blueprinted 5 bar fpr? Suposivly its not a modified one it is a true 5 bar?

Any help would be appreciated

[CJ_]

ECS has a adjustable drop in one also, don't know anything about it though.

https://www.ecstuning.com/ES5271/?gc...uyDhoCKm3w_wcB

They also have it as a kit with their inline fuel pressure gauge, which I have been running and is working great!

[f4m0u5]

ECS has a adjustable drop in one also, don't know anything about it though.

https://www.ecstuning.com/ES5271/?gc...uyDhoCKm3w_wcB

They also have it as a kit with their inline fuel pressure gauge, which I have been running and is working great!

Thanks! So then question is any one have experience with any of the 3 options? The o34 adjustible 034 5 barn or ecs tuning asjustible?


And i already have a fuel pressure gauge installed on car thank you!!

[f4m0u5]

No one has expierience with these?

Im thinking the 034 ones might have some fuel pressure creep with a hiigh flow pump.

Look at how small the holes are under neith the screen.






The one from Ecs, Oem and all bosch ones have big slots not those little holes.


And rofl awe hit me back asking 300+ for the true bosch 5 bar. Idk why bosch charges so much for there 5 bar..

[julex]

Except that these "little holes" are inlet holes and the one that's causing pressure creep is outlet hole that's inside of the brass pole with o-ring on it. In that respect, 034 outlet seems quite a bit larger than ECS .

[f4m0u5]

My mistake! Thank you