Why You Need A Fuel Pressure Gauge On The Dash
12-20-12, 02:35 PM
#26
Eye In The Sky
Thread Starter
iTrader: (2)
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,893
Likes: 0
Received 114 Likes
on
66 Posts
I had one of those before the PFC came out. One day it gave total fuel cut under boost while in the learning mode in third gear. Scared the **** out of me. Then I bought a reprogrammed ecu.
12-20-12, 02:39 PM
#27
Eye In The Sky
Thread Starter
iTrader: (2)
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,893
Likes: 0
Received 114 Likes
on
66 Posts
A quick glance once in a while why accelerating is what I have been talking about, not tuning. Because most likely this type of failure will happen when you are not tuning.
12-20-12, 04:41 PM
#29
I honestly don't know why so many people stick with the PFC for cars other then sequential cars.
12-20-12, 05:42 PM
#30
Eye In The Sky
Thread Starter
iTrader: (2)
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,893
Likes: 0
Received 114 Likes
on
66 Posts
If I was still working instead of being retired with a limited budget, I would replace the PFC. But after 20 years of FD ownership, 13 years of PFC without any problems,
you can say "Chuck is stuck in a rut.". So be it, but my car is better overall than most FDs are.
you can say "Chuck is stuck in a rut.". So be it, but my car is better overall than most FDs are.
12-20-12, 08:31 PM
#32
I said WHILE AT FULL BOOST who can look at everything at the same time.
Of course you can look at anything "once in a while" while at your leisure, at full boost im making sure i shift and i dont crash . Once in a while while accelerating i look at a lot of things
12-21-12, 07:42 AM
#33
the fuel pressure gauge only verifies your fuel pump, lines, and regulator. A wideband gauge verifies all that and more.. injectors, map sensor, tune, vacuum leaks, etc.
i would rather look at a single gauge that monitors the final product (exhaust AFR). fuel pressure is something you would use for troubleshooting if something went wrong, not as your first indicator. it leaves out a lot of information a wideband can provide
i would rather look at a single gauge that monitors the final product (exhaust AFR). fuel pressure is something you would use for troubleshooting if something went wrong, not as your first indicator. it leaves out a lot of information a wideband can provide
12-21-12, 04:42 PM
#34
Eye In The Sky
Thread Starter
iTrader: (2)
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,893
Likes: 0
Received 114 Likes
on
66 Posts
Here is my recent compressions test done with a calibrated electronic tester.
Front Leading Spark Plug: 129.04/125.39/124.17
Rear Leading Spark Plug: 125.39/121.74/121.74
Engine built by me but rotating parts balanced by Mazda Trix.
12-21-12, 04:55 PM
#35
Eye In The Sky
Thread Starter
iTrader: (2)
Join Date: Feb 2001
Location: In A Disfunctional World
Posts: 7,893
Likes: 0
Received 114 Likes
on
66 Posts
Make up your mind, is it once in a while while accelerating or is it while at full boost?
I said WHILE AT FULL BOOST who can look at everything at the same time.
Of course you can look at anything "once in a while" while at your leisure, at full boost im making sure i shift and i dont crash . Once in a while while accelerating i look at a lot of things
I said WHILE AT FULL BOOST who can look at everything at the same time.
Of course you can look at anything "once in a while" while at your leisure, at full boost im making sure i shift and i dont crash . Once in a while while accelerating i look at a lot of things
The problem is that different cars react differently.
My home built balanced engine with stock ports but port matched and enlarged port runners, port matched manifolds, moded TB, full supporting mods,
etc with an A-Spec GT35R 1.06 kit will hit full boost before 4000 rpm even at 17 psi boost. It also has WI.
Even when I floor the throttle in 2nd or 3rd gear it will hit full boost by 3600 - 4000rpms and hold boost flat all the way to redline.
Thus my max boost is the same as acceleration.
What is so difficult to understand about that?
It was above 6000 rpm that fuel pressure was dropping off.
Can you handle that?
12-21-12, 07:23 PM
#36
Relax man all i was saying was at full boost who can look at all that, was just making a comment talking about the subject i didnt say your idea was bad or to explain everything. I didnt talk **** to you but You are the one who is saying your eyes and brain are faster which obviously implies i am slow.
Merry christmas to you
Merry christmas to you
12-26-12, 08:28 AM
#37
Racing Rotary Since 1983
iTrader: (6)
"Here is a screen shot of what the engine protection looks like. The reason it is red is because Haltech knows that I do not have a fuel pressure input selected so my settings would be useless here. You can see on the right as C.ludwig mentioned the fuel pressure works off of delta pressure not overall fuel pressure."
post ten caught my eye. in a (more) perfect world the ECU would sense a separation of the fuel pressure from the boost pressure and immediately make an engine saving adjustment.
that's just what post ten is about. very impressive, good job Haltech.
i checked w ViPEC and they alerted me to a parameter entitled "Differential Fuel Pressure."
you simply select it, enter whatever differential pressure value you wish and the computer will react if triggered by switching to another 440 cell ignition map, fuel map or open the WG.
a valuable feature.
howard
post ten caught my eye. in a (more) perfect world the ECU would sense a separation of the fuel pressure from the boost pressure and immediately make an engine saving adjustment.
that's just what post ten is about. very impressive, good job Haltech.
i checked w ViPEC and they alerted me to a parameter entitled "Differential Fuel Pressure."
you simply select it, enter whatever differential pressure value you wish and the computer will react if triggered by switching to another 440 cell ignition map, fuel map or open the WG.
a valuable feature.
howard
Thread
Thread Starter
Forum
Replies
Last Post
