Procede 'Fuel Pressure' High Pressure Rail Voltage Figure

uniter · 01-30-2014, 01:09 PM

So I'm trying to figure out what the voltage figure reported by the procede for High Pressure Fuel Pump rail voltage translates to, and what good solid figures -should be- during a 2k-7k RPM pull.

Someone posted up in antiquity that this figure should be around 4V through the pull, I'm seeing 3.6V at 3k RPM down to 3V (15PSI) by 5,000 RPM and lowering out to 2.4V(12.5PSI) in 6500 RPM.

Tzu · 01-31-2014, 07:37 AM

What do your trims look like? Post a log.

I also once asked shiv for a correlation between voltage and HPFP pressure. Apparently that didnt merit an answer. Terry told me once, but I forget exactly what it is. It's on his forum.

That being said, pressure transducers are always linear. I beleive the sensor outputs 0-5V which would correlate to zero to full HPFP pressure.

uniter · 02-03-2014, 01:22 PM

Quote:

Originally Posted by Tzu

What do your trims look like? Post a log.

I also once asked shiv for a correlation between voltage and HPFP pressure. Apparently that didnt merit an answer. Terry told me once, but I forget exactly what it is. It's on his forum.

That being said, pressure transducers are always linear. I beleive the sensor outputs 0-5V which would correlate to zero to full HPFP pressure.

My trims are on point, either 0% or negative..

01-30-2014, 01:09 PM	#1
uniter Black on Black on Black. 43 Rep 532 Posts Drives: 335i/6mt Sport,Nav,Prem. Join Date: Feb 2010 Location: New Hope, PA iTrader: (1)	Procede 'Fuel Pressure' High Pressure Rail Voltage Figure So I'm trying to figure out what the voltage figure reported by the procede for High Pressure Fuel Pump rail voltage translates to, and what good solid figures -should be- during a 2k-7k RPM pull. Someone posted up in antiquity that this figure should be around 4V through the pull, I'm seeing 3.6V at 3k RPM down to 3V (15PSI) by 5,000 RPM and lowering out to 2.4V(12.5PSI) in 6500 RPM. __________________ LEMANS BLUE M-TECH E92->PROCEDE REV3::BIEHNTUNE FLASH::ETS 7" FMIC::RACELAND DPS::OS GIKEN 1.5 WAY::DEFIV DIFF LOCKDOWN::DEFIV OCC::DEFIV INTAKE::RB PCV
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01-31-2014, 07:37 AM	#2
Tzu Lieutenant Colonel 31 Rep 1,551 Posts Drives: 335i Join Date: Jun 2010 Location: Toronto iTrader: (1)	What do your trims look like? Post a log. I also once asked shiv for a correlation between voltage and HPFP pressure. Apparently that didnt merit an answer. Terry told me once, but I forget exactly what it is. It's on his forum. That being said, pressure transducers are always linear. I beleive the sensor outputs 0-5V which would correlate to zero to full HPFP pressure.
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