Early ICP in a late year model engine: Any benefits??
#31
07-23-2014, 08:46 PM
#32
07-23-2014, 08:52 PM
Dam cheat sheet
#33
07-23-2014, 09:08 PM
FTE Chapter Leader
Vref is always 5v, its 5v on every sensor on a 5v ref system.
Im not sure if this is the question you asked.
Sensor aka pcm imputs are 5 volts, solenoids aka outputs are alway 12v.
Please understand always to mean in most cases in 12v systems on cars/trucks.
Theres some old ball stuff out there with 12v sence wiring like what caterpillar does with the adms system.
Im not sure if this is the question you asked.
Sensor aka pcm imputs are 5 volts, solenoids aka outputs are alway 12v.
Please understand always to mean in most cases in 12v systems on cars/trucks.
Theres some old ball stuff out there with 12v sence wiring like what caterpillar does with the adms system.
Sean
#34
07-23-2014, 09:34 PM
Well ...................
I drove her pretty hard today. Broke the tires loose a couple of times on a few (near) WOT runs. All-in-all, I must say I am very happy w/ the performance. Very responsive.
Now, that being said .......... I would have to say the results are probably inconclusive.
The first WOT run, I blew quite a bit of smoke out. Who knows if I freed up the vanes a little or maybe even there was more of a bias on my old ICP sensor, because it is old (after all they only last a year and I am going on 8 yrs w/ this original sensor - lol).
Then again, it could just be the oil change and wash/wax syndrome ............. you just convince yourself that it is better because you want to believe it.
I drove her pretty hard today. Broke the tires loose a couple of times on a few (near) WOT runs. All-in-all, I must say I am very happy w/ the performance. Very responsive.
Now, that being said .......... I would have to say the results are probably inconclusive.
The first WOT run, I blew quite a bit of smoke out. Who knows if I freed up the vanes a little or maybe even there was more of a bias on my old ICP sensor, because it is old (after all they only last a year and I am going on 8 yrs w/ this original sensor - lol).
Then again, it could just be the oil change and wash/wax syndrome ............. you just convince yourself that it is better because you want to believe it.
#36
07-23-2014, 09:38 PM
FTE Chapter Leader
#37
07-23-2014, 09:39 PM
Thats it.
It also hedges on how the pcm is set up to read the voltage. Josh was heading on this somewhat.
So is the 03 pcm calibrated with a different starting point? I dont know
Icpv on an 03 truck is .19v on avarge.
Icpv on a later truck is .24v 8n avarge.
That would be pid values at koeo.
Now the pced no start for both truck states that .85v is what is need to start the truck. The pcm is not concerned with the pressure its only looking at voltage. Icp pressure is just a diagnostic pid for the tech.
So looking at the charts its 400 to 500 psi bais @ the .5v differance.
So does the old icpnsensor become latterly less biased as pressure incresses, does the pcm compinsate for it via programing, or is there a glich that one can exploit for a cheep but small bit of performance.
I just dont know, but hey all in the name of fun.... ive had dumber ideas that have failed worse Im sure.
It also hedges on how the pcm is set up to read the voltage. Josh was heading on this somewhat.
So is the 03 pcm calibrated with a different starting point? I dont know
Icpv on an 03 truck is .19v on avarge.
Icpv on a later truck is .24v 8n avarge.
That would be pid values at koeo.
Now the pced no start for both truck states that .85v is what is need to start the truck. The pcm is not concerned with the pressure its only looking at voltage. Icp pressure is just a diagnostic pid for the tech.
So looking at the charts its 400 to 500 psi bais @ the .5v differance.
So does the old icpnsensor become latterly less biased as pressure incresses, does the pcm compinsate for it via programing, or is there a glich that one can exploit for a cheep but small bit of performance.
I just dont know, but hey all in the name of fun.... ive had dumber ideas that have failed worse Im sure.
Me - I am going to at least enjoy testing it for a few more days
reps to ya when I can
#39
07-23-2014, 09:50 PM
FTE Chapter Leader
#41
07-23-2014, 09:56 PM
#42
07-23-2014, 10:24 PM
FTE Chapter Leader
It would give some hard data and while it running use the IDS
to datalog it
I think even when we wed up in the box we are looking at ways to remove the screws and get OUT as a Zombie-tech.
Sean
to datalog it
Sean
#43
07-24-2014, 04:55 AM
Thats it.
It also hedges on how the pcm is set up to read the voltage. Josh was heading on this somewhat.
So is the 03 pcm calibrated with a different starting point? I dont know
Icpv on an 03 truck is .19v on avarge.
Icpv on a later truck is .24v 8n avarge.
That would be pid values at koeo.
Now the pced no start for both truck states that .85v is what is need to start the truck. The pcm is not concerned with the pressure its only looking at voltage. Icp pressure is just a diagnostic pid for the tech.
So looking at the charts its 400 to 500 psi bais @ the .5v differance.
So does the old icpnsensor become latterly less biased as pressure incresses, does the pcm compinsate for it via programing, or is there a glich that one can exploit for a cheep but small bit of performance.
I just dont know, but hey all in the name of fun.... ive had dumber ideas that have failed worse Im sure.
It also hedges on how the pcm is set up to read the voltage. Josh was heading on this somewhat.
So is the 03 pcm calibrated with a different starting point? I dont know
Icpv on an 03 truck is .19v on avarge.
Icpv on a later truck is .24v 8n avarge.
That would be pid values at koeo.
Now the pced no start for both truck states that .85v is what is need to start the truck. The pcm is not concerned with the pressure its only looking at voltage. Icp pressure is just a diagnostic pid for the tech.
So looking at the charts its 400 to 500 psi bais @ the .5v differance.
So does the old icpnsensor become latterly less biased as pressure incresses, does the pcm compinsate for it via programing, or is there a glich that one can exploit for a cheep but small bit of performance.
I just dont know, but hey all in the name of fun.... ive had dumber ideas that have failed worse Im sure.
if so, do I have to share it with Josh? 
I will say after all that reading I know a little more about the ICP's job and it's a bit more complicate than I imagined. Never did find out exactly how it works except it's referred to as a "variable capacitance" sensor in some International literature.
#44
07-24-2014, 05:57 PM
So, do I win something? if so, do I have to share it with Josh?
I will say after all that reading I know a little more about the ICP's job and it's a bit more complicate than I imagined. Never did find out exactly how it works except it's referred to as a "variable capacitance" sensor in some International literature.
if so, do I have to share it with Josh? I will say after all that reading I know a little more about the ICP's job and it's a bit more complicate than I imagined. Never did find out exactly how it works except it's referred to as a "variable capacitance" sensor in some International literature.
#45
07-24-2014, 06:08 PM
