What to use for fuel pressure to jet my 2002 Range for nitrous?
 

I can't seem to find a solid answer on what fuel pressure my 2002 Ranger is so I can adjust my NX kit accordingly. I'm going to bump my shot up to a 100 HP. Thanks.

PS please save the "you're gonna blow er up!" This isn't my first rodeo.

stock should be about 50-60 psi if you have a 2.3 duratec like i do, your difference is that i boosted my motor and put some 36lb/hr injectors to compensate for the boost gonna try n20 on my next ranger 2.3 wanna ask you for some tips with n20

+1 ^^^

1998 to 2011 Rangers used 55psi average fuel pressure on a Returnless system
Pressure regulator is in the fuel pump assembly




The way you increase engine power is to increase the amount of gasoline you can burn every 2 RPMs at 14.7:1 air:fuel ratio
A 5 liter engine has more power than a 3 liter engine because it can pull in 2 more liters of air every 2 RPMs so more gasoline can be burned at 14.7:1

A turbo or super charger works by forcing more air into the engine, so more gasoline can be burned every 2 RPMs, so more power

Nitrous oxide is basically compressed Oxygen, it splits into Oxygen and Nitrogen when heated in the cylinder, the Nitrogen is inert but the extra Oxygen is seen by the O2 sensors instantly in the exhaust, so computer instantly increases injector open times which increases gasoline burned and so increases power

Turbo and super chargers provide fairly instant power and can damage engines not designed for the extra power, but the Nitrous injection is a more abrupt power increase, so a bit more dangerous for engines not designed for the increase in power, there is also the issues of LEAN condition developing which melts valves and pistons
Yes, you already know that but others may not

Ron where should I post my experimental ROM for the duratec 2.3 motors, it's for NA 200 whp and 192 lb ft torque, sofar it works on the 4 rangers here in town safely no knock or ping and I think a lot of the 4 banger guys will be interested since it works on the sct flashers

Where would the best general location for the n20 tank be and how far infront of the throttle body should I place the wet injection setup, I do have a control module with an rpm cut off but I'm still drawing this all out in cad, the 2.3l duratec with stock internals I want to put my money on properly tuned can take 80 shot safely and 120 as a fragrance thing for a few times rebuild few times rebuild etc.....

I would put it here and ask if a mod can change it to a Sticky: https://www.ranger-forums.com/forced...n-n20-tech-35/

The other Sticky there is a good read on Nitrous: https://www.ranger-forums.com/forced...bed-v8s-72038/

And I would not be the one to tell you about its injection, not my "cup of tea" I am a normally aspirated, no nitrous guy, I get why people like it, I just don't want it myself so don't follow its use
Pay attention to the "phase", the transition from liquid to gas state

Thank you for that info, I will keep an eye out on the phase change and watch pressure differences in the manifold and both 02 reads, under boost or n20 and wot you want between 12.5 and 13.2 afr, I'll try and have the rom fully tested by the end of August latest, Wich mod do I talk to about getting it stickied, on the rangers fuel is control based on voltage wot voltage to the pump is 10V but 3000 rpm cruise 75mph volt is 6.6, the stick pump is able to take 12.44 without burning but after causes damage, I'm in my 9th fuel pump the current one is a racing pump from summit, capable of stock range to 24V 40 Gallon per hour

As far as I know the Rangers fuel pump gets "system" voltage full time when engine is running(RPMs above 400)
So 13.5v to 14.9volts from alternator
And the fuel pressure regulator in the gas tank, from 3rd hose on fuel filter, maintains the 55psi pressure

I do know Ford did use Duty Cycle fuel pump power using PWM(pulse width modulation) which would vary the power level at the fuel pumps, just didn't think Rangers ever had that

Well I guess I'll be the first to write a book on it, I'm ginna get a bunch of my friends and we're gonna start noting everything and make a dummies guide to ranger electronics with tuning guide for the 2.3, I think people will like that

Make sure to include the years of the Rangers you know use what you find, including that its a 2.3l DOHC Duratec engine, "2.3l Ranger" also applies to 1983-1997 Rangers with Lima SOHC engines

Good call, I probably would've forgoten but sofar I could only get it to work on 2007 and earlier 2008 seems to be the cutoff due to a different strategy used and lack of J3 port

Yes, I think 2004 was last year for the J3 port but varies by Ford model of vehicle

I did see the F-150s started using a Fuel Pump Driver Module(FPDM) in 2004, this would be the voltage control for fuel pump
But the fuel pump relay was no longer controlled by the PCM(computer) it was on with key on

Didn't find much about Rangers and FPDM

I can tell you that my 2011 v6 m5od ranger does not have that fpdm driver it's just like my 02 and 2000 but no j3, I can confirm 2007 and back yes

If no FPDM then fuel pump voltage should be System voltage all the time, PCM has no other control except FP relay which can't be used for PWM(variable power)

FPDM is used to reduce recirculating fuel via a pressure regulator, it causes more gas vapor in the tank
One of the reason Return fuel system were end in 1998 Rangers but they still had the return and FPR in the tank, so still had a bit of the problem still
FPDM eliminates it, but also adds one more thing to go wrong with fuel delivery system, FPRs in the tank didn't have all that many failure

I can confirm no fpdm on the 2002 I'll have a look later when it's cooler on the 2011 and I'll have an awsner for you