Rail Pressure Sensor Question

jpowel29

Member
Feb 1, 2008
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Bentonville, Arkansas
Trying to educate myself on any potential benefit from replacing a stock Bosch 1800 bar RPS with a higher (say 2200 bar). Does the 2200 bar RPS effectively multiply the voltage? Thus commanding more rail pressure across the board? I can see where their may be a benefit from the higher bar rating allowing the tune to raise the "ceiling".
 

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
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Lexington, Ky
Exergy told me I shouldn't be running the 29+ I was. Shortly after I blew a check ball. I have no idea how high it got. I am interested in this too. Who knows how high it went without any relief valve... I would like to run as high as possible though without breaking parts
 

jpowel29

Member
Feb 1, 2008
780
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Bentonville, Arkansas
I'm looking at some different relief valves (vs running a race valve). I have not had any issues with damaging injectors but it's hard to know what's really happening when the data log can only read pressure up so far.
 

95 z71

SUDDEN IMPACT
Aug 11, 2009
293
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Cavan, Ontario
Exergy told me I shouldn't be running the 29+ I was. Shortly after I blew a check ball. I have no idea how high it got. I am interested in this too. Who knows how high it went without any relief valve... I would like to run as high as possible though without breaking parts

I had a similar issue. Would a 30k relief valve be a better option than a race valve
 

x MadMAX DIESEL

<<<< No Horsepower
Dec 30, 2008
7,535
2
38
34
Lexington, Ky
I had a similar issue. Would a 30k relief valve be a better option than a race valve

Considering we have now idea if there is a spike in pressure like 36000. Yes lol i say it's a better option. I only ran no relief cause that's the only option I had without custom work. Your race "valve" is the same thing, no valve!
 

95 z71

SUDDEN IMPACT
Aug 11, 2009
293
0
16
Cavan, Ontario
I am quite aware that a race valve =no relief. I have made over 50 sled pulls without another issue running larger tunes.
Was it just a fluke spike in pressure?
Who knows.
 

clrussell

pro-procrastinator
Sep 23, 2013
5,955
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On the last 2 lly trucks Jacob had if rail was bumped to around 30k it would blow an injector about every weekend.

First truck had a shimmed valve. 2nd has no relief. Turned desired rail back to stock and injectors are fine now.
 

S Phinney

Active member
Aug 15, 2008
4,008
18
28
Quncy, Fl
Trying to educate myself on any potential benefit from replacing a stock Bosch 1800 bar RPS with a higher (say 2200 bar). Does the 2200 bar RPS effectively multiply the voltage? Thus commanding more rail pressure across the board? I can see where their may be a benefit from the higher bar rating allowing the tune to raise the "ceiling".

John the sensor will allow data to be read above the installed one. It will require a rescale of the current table for it to read correctly.