AE-ICP%
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Cargo Master
Joined: Apr 2009
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From: Man Cave
AE-ICP%
Howdy all
Finally got out and ran some data logging. Got no idea what Im lookn at lol.but Im trying to learn. Ran ICP% and was getting bout 8/9% at idle 14/15% at 1500rpm and high 20's to low 30's 2200-2500 rpm. What is that actually telling me..
Finally got out and ran some data logging. Got no idea what Im lookn at lol.but Im trying to learn. Ran ICP% and was getting bout 8/9% at idle 14/15% at 1500rpm and high 20's to low 30's 2200-2500 rpm. What is that actually telling me..
Post Fiend
Joined: Jun 2004
Posts: 9,293
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From: Parker, CO
Most 99.5-03's with a stock HPOP usually sit around 500 psi and 10-12% duty cycle at idle.
At WOT and in bone stock tuning, you should see (with a healthy HPOP) about 2900 psi at over 40% duty cycle.
In a high HP tune, expect the duty cycle to be at least 65%, and pressures lower at 2200 psi or so with a fairly healthy HPOP at WOT. Stock HPOP's just can't keep up with oil hungry split shots when running a higher HP tune.
At WOT and in bone stock tuning, you should see (with a healthy HPOP) about 2900 psi at over 40% duty cycle.
In a high HP tune, expect the duty cycle to be at least 65%, and pressures lower at 2200 psi or so with a fairly healthy HPOP at WOT. Stock HPOP's just can't keep up with oil hungry split shots when running a higher HP tune.
Post Fiend
Joined: Jun 2006
Posts: 9,714
Likes: 2
From: White Mnt's,New Hampshire
try both tunes...creuise about 65 MPH click record then role into the go peddle till you are flat footed so she doesnt down shift on you.you can try starting at 50MPH but she might want to down shift...you have a little more weight to push then Joe does...if it shifts you wont get a very honest reading....your run should be complete at about 90 MPH...
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Cargo Master
Joined: Apr 2009
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From: Man Cave
Thats close to 150km/h. Jeeeeez I hop the coppa's arent out. If I get pulled over I will say Ron told me to. that should take care of it
Post Fiend
Joined: Jun 2006
Posts: 9,714
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From: White Mnt's,New Hampshire
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Post Fiend
Joined: Jun 2006
Posts: 9,714
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From: White Mnt's,New Hampshire
this test is done at a stand still but can also be used on wot runs..what you really need is just ICP and duty cycle...
Vehicle & HPOP Health Check
Sensor Table (See Examples Below)
Engine RPM Injector Control Pressure Injector CRTL Pres DC
Accelerator Pedal Pos Exhaust Backpressure ICP – Volts
Engine Oil Temp Volume Fuel Desired Fuel Injector Pulse Width
1. Connect to Enhanced Powertrain Module
2. Select the following sensors in Live Data
a. Engine RPM
b. Injector Control Pressure
c. Injector CRTL Pres DC
d. Accelerator Pedal Pos
e. Exhaust Backpressure
f. ICP – Volts
g. Engine Oil Temp
h. Volume Fuel Desired
i. Fuel Injector Pulse Width
IDLE:
WOT:
At Idle Injector Control Pressure should be above 500psi (on a fully warmed truck
pressure will generally be between 480psi and 550psi. If you are monitoring during
cranking you can see spikes upwards of 2200psi. The IPR (Injector CRTL Pres DC)
should be between 10-15% at idle with the Accelerator Pedal Position also between 10-
15%. At WOT Injector CRTL Pres DC should not exceed 65% with ICP not below
1800psi and Accelerator Pedal Position between 70-80%.
Sensor Table (See Examples Below)
Engine RPM Injector Control Pressure Injector CRTL Pres DC
Accelerator Pedal Pos Exhaust Backpressure ICP – Volts
Engine Oil Temp Volume Fuel Desired Fuel Injector Pulse Width
1. Connect to Enhanced Powertrain Module
2. Select the following sensors in Live Data
a. Engine RPM
b. Injector Control Pressure
c. Injector CRTL Pres DC
d. Accelerator Pedal Pos
e. Exhaust Backpressure
f. ICP – Volts
g. Engine Oil Temp
h. Volume Fuel Desired
i. Fuel Injector Pulse Width
IDLE:
WOT:
At Idle Injector Control Pressure should be above 500psi (on a fully warmed truck
pressure will generally be between 480psi and 550psi. If you are monitoring during
cranking you can see spikes upwards of 2200psi. The IPR (Injector CRTL Pres DC)
should be between 10-15% at idle with the Accelerator Pedal Position also between 10-
15%. At WOT Injector CRTL Pres DC should not exceed 65% with ICP not below
1800psi and Accelerator Pedal Position between 70-80%.
DO NOT PERFORM THE
WOT TEST WITH AN AFTERMARKET TUNE OR CHIP THE REV LIMITER
MAY HAVE BEEN REMOVED CHECK WITH YOUR TUNER OR CHIP
MANUFACTURER.
WOT TEST WITH AN AFTERMARKET TUNE OR CHIP THE REV LIMITER
MAY HAVE BEEN REMOVED CHECK WITH YOUR TUNER OR CHIP
MANUFACTURER.
Exhaust backpressure should be between 10-15psi at idle (above example taken with
EBPV closed) and should not exceed 45psi at WOT. A very low pressure at idle 3-5psi
that just barely rises with acceleration can be a sign of a clogged tube and sensor or a bad
sensor if cleaning doesn’t fix it. This is best done over the road for the most accurate
results.
ICP volts can be used to diagnose a bad sensor with a multi-meter if a scan tool is not
available. See Table Below
EBPV closed) and should not exceed 45psi at WOT. A very low pressure at idle 3-5psi
that just barely rises with acceleration can be a sign of a clogged tube and sensor or a bad
sensor if cleaning doesn’t fix it. This is best done over the road for the most accurate
results.
ICP volts can be used to diagnose a bad sensor with a multi-meter if a scan tool is not
available. See Table Below
Pressure (PSI) Pressure (MPA) Sensor Voltage
0 0 .02v
200 1.5 .4v
400 3 0.73v
600 4 .96v
800 5.5 1.2v
1000 7 1.4v
1200 8 1.6v
1400 9.7 1.9v
1600 11 2.1v
1800 12.4 2.3v
2000 13.8 2.6v
2200 15.2 2.8v
2400 16.5 3v
2600 18 3.3v
2800 19.3 3.5v
3000 20.6 3.8v
www.autoenginuity.com200 1.5 .4v
400 3 0.73v
600 4 .96v
800 5.5 1.2v
1000 7 1.4v
1200 8 1.6v
1400 9.7 1.9v
1600 11 2.1v
1800 12.4 2.3v
2000 13.8 2.6v
2200 15.2 2.8v
2400 16.5 3v
2600 18 3.3v
2800 19.3 3.5v
3000 20.6 3.8v
