Why use a Adjustable Fuel Reg?
Thread Starter
Registered User
Joined: May 2000
Posts: 406
From: Haverhill MA
Why use a Adjustable Fuel Reg?
Why would you install a adjustable fuel reg if the PMC is gonna compensate for any change you make to anyhow? - Yeah, I'm sure for some of you this is a noob question, sorry.
Registered User
Joined: Nov 2001
Posts: 1,213
From: North Vancouver, BC
at WOT the adjustable FPR will work as intended, increasing the fuel flow through the injectors thanks to the higher pressure. You can use it to lower your injector duty cycles at peak power levels.
Unless you are running over at least 320 rwhp with stock injectors you will not likely benefit from this added fuel.
Unless you are running over at least 320 rwhp with stock injectors you will not likely benefit from this added fuel.
Registered User
Joined: Nov 2001
Posts: 1,213
From: North Vancouver, BC
Originally posted by Van5150
Ok, will the Adjustable Fuel Regulator fix the problem associated with black smoke (rich) some people see with wide open throttle ?
Ok, will the Adjustable Fuel Regulator fix the problem associated with black smoke (rich) some people see with wide open throttle ?
Under WOT, the PCM will not seek this stoich ratio, so reducing the pressure will reduce the amount of fuel flowing through the injectors, leaning the mixture.
So yes, this could be used to reduce the black smoke (due to richness) at WOT.
Registered User
Joined: Jul 2000
Posts: 2,735
From: Buffalo, NY
Originally posted by Van5150
Ok, will the Adjustable Fuel Regulator fix the problem associated with black smoke (rich) some people see with wide open throttle ?
Ok, will the Adjustable Fuel Regulator fix the problem associated with black smoke (rich) some people see with wide open throttle ?
What is it about AFPR you want to know? I thought I anwsered your question.
Last edited by 96z; Mar 21, 2003 at 01:34 AM.
Thread Starter
Registered User
Joined: May 2000
Posts: 406
From: Haverhill MA
Draco, I see you post here all the time, you really do a good job with your posts.
You said that we could use the Fuel Reg as a way to adjust for black smoke, it almost sounds like you know a better way, or something that should be looked at.
Is there ?
You said that we could use the Fuel Reg as a way to adjust for black smoke, it almost sounds like you know a better way, or something that should be looked at.
Is there ?
Last edited by Van5150; Mar 21, 2003 at 02:09 AM.
Registered User
Joined: Jul 2000
Posts: 2,735
From: Buffalo, NY
Originally posted by Van5150
Draco, I see you post here all the time, you really do a good job with your posts.
I said that we could use the Fuel Reg as a way to adjust for black smoke, it almost sounds like you know a better way, or something that should be looked at.
Is there ?
Draco, I see you post here all the time, you really do a good job with your posts.
I said that we could use the Fuel Reg as a way to adjust for black smoke, it almost sounds like you know a better way, or something that should be looked at.
Is there ?
Registered User
Joined: Jan 2001
Posts: 2,148
From: Bay Area, CA
Hey Eddie 
An adjustable FPU works for tuning on 93 cars, and plenty of others, but 94+ cars will compensate. Not alot of reasons to have one other than going for a specific fuel pressure for whatever reason one might have.
I am going to use a boost sensing fuel pressure gauge for my turbo car, old fargin 1982 computer, not many other ways to fix these problems on older cars that you cant really rip into the computer to fix.
An adjustable FPU works for tuning on 93 cars, and plenty of others, but 94+ cars will compensate. Not alot of reasons to have one other than going for a specific fuel pressure for whatever reason one might have.
I am going to use a boost sensing fuel pressure gauge for my turbo car, old fargin 1982 computer, not many other ways to fix these problems on older cars that you cant really rip into the computer to fix.
Registered User
Joined: Jan 2001
Posts: 2,148
From: Bay Area, CA
Are you fargin serious???
Dude, get Tunercat and a cheap laptop!!!
You have the "perfect" year LT1
The car should not be running that rich unless you have a problem, like bad O2/CAT etc. You can download Freescan and diagnose your problems, which is what I did with my 94, works great.
http://www.andywhittaker.com/ecu/ecu_software.htm
Got my cable from Steve, www.wotelectronics.com
Adjustable FPU is nothing but a bandaid or workaround for those that can't tune with the computer, be gratefull IMO that you have such an awesome EFI setup. Adjustable FPUs are for people like me with old old cars or lazy bastardos/cheapos who dont want to tune the car "properly", JMO of course.
An adjustable FPU will affect the whole range and that is a problem, these cars are rich only at WOT and within a certain MAP range, otherwise your car should not run rich unless something is wrong, which can be fixed!
Dude, get Tunercat and a cheap laptop!!!
You have the "perfect" year LT1
The car should not be running that rich unless you have a problem, like bad O2/CAT etc. You can download Freescan and diagnose your problems, which is what I did with my 94, works great.http://www.andywhittaker.com/ecu/ecu_software.htm
Got my cable from Steve, www.wotelectronics.com
Adjustable FPU is nothing but a bandaid or workaround for those that can't tune with the computer, be gratefull IMO that you have such an awesome EFI setup. Adjustable FPUs are for people like me with old old cars or lazy bastardos/cheapos who dont want to tune the car "properly", JMO of course.
An adjustable FPU will affect the whole range and that is a problem, these cars are rich only at WOT and within a certain MAP range, otherwise your car should not run rich unless something is wrong, which can be fixed!
Last edited by Dr.Mudge; Mar 21, 2003 at 02:18 AM.
Thread
Thread Starter
Forum
Replies
Last Post
F(ast)-body
LT1 Based Engine Tech
8
Feb 26, 2003 09:05 AM