I logged my data during my 1/4mi runs on my auto g35,,
what i found interesting is that my absolute throttle position was never above 82% and load is around 89% on those runs. Is this normal or not?
I have all the data in Excel file if anyone is interested in digging a little deeper, i got 02 sensors, short and long trim, timing and much more info there that could be of help to somone who knows what they are looking for.

here is the data for analysis:

Fuel System 1 Status Closed Loop: Using oxygen sensor(s) as feedback for fuel control. OL/CL CL OL/CL
Fuel System 2 Status Closed Loop: Using oxygen sensor(s) as feedback for fuel control. OL/CL CL OL/CL
Calculated Load Value 27.45 % 27.45 %
Engine Coolant Temperature 199.4 deg F 93 deg C
Short Term Fuel Trim (Bank 1) -0.78125 % -0.78125 %
Long Term Fuel Trim (Bank 1) 3.90625 % 3.90625 %
Short Term Fuel Trim (Bank 2) -3.125 % -3.125 %
Long Term Fuel Trim (Bank 2) 0 % 0 %
Engine RPM 700 rpm 700 rpm
Vehicle Speed Sensor 0 mph 0 km/h
Ignition Timing Advance for #1 Cylinder 7 deg 7 deg
Intake Air Temperature 91.4 deg F 33 deg C
Air Flow Rate from Mass Air Flow Sensor 0.619061267 lb/min 4.68 g/s
Absolute Throttle Position 0.784313725 % 0.784313725 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 1) 0.63 V 0.63 V
Short Term Fuel Trim (Bank 1 Sensor 1) -2.34375 % -2.34375 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 2) 0.18 V 0.18 V
Short Term Fuel Trim (Bank 1 Sensor 2) NOT USED % NOT USED %
Oxygen Sensor Output Voltage (Bank 2 Sensor 1) 0.85 V 0.85 V
Short Term Fuel Trim (Bank 2 Sensor 1) -2.34375 % -2.34375 %
Oxygen Sensor Output Voltage (Bank 2 Sensor 2) 0.26 V 0.26 V
Short Term Fuel Trim (Bank 2 Sensor 2) NOT USED % NOT USED %
Fuel System 1 Status Closed Loop: Using oxygen sensor(s) as feedback for fuel control. OL/CL CL OL/CL
Fuel System 2 Status Closed Loop: Using oxygen sensor(s) as feedback for fuel control. OL/CL CL OL/CL
Calculated Load Value 26.27 % 26.27 %
Engine Coolant Temperature 201.2 deg F 94 deg C
Short Term Fuel Trim (Bank 1) 0 % 0 %
Long Term Fuel Trim (Bank 1) 0 % 0 %
Short Term Fuel Trim (Bank 2) 12.5 % 12.5 %
Long Term Fuel Trim (Bank 2) -0.78125 % -0.78125 %
Engine RPM 2850 rpm 2850 rpm
Vehicle Speed Sensor 16.25 mph 26 km/h
Ignition Timing Advance for #1 Cylinder 25 deg 25 deg
Intake Air Temperature 82.4 deg F 28 deg C
Air Flow Rate from Mass Air Flow Sensor 18.85623581 lb/min 142.55 g/s
Absolute Throttle Position 81.56862745 % 81.56862745 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 1) 0.89 V 0.89 V
Short Term Fuel Trim (Bank 1 Sensor 1) 0 % 0 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 2) 0.9 V 0.9 V
Short Term Fuel Trim (Bank 1 Sensor 2) NOT USED % NOT USED %
Oxygen Sensor Output Voltage (Bank 2 Sensor 1) 0.86 V 0.86 V
Short Term Fuel Trim (Bank 2 Sensor 1) 0 % 0 %
Oxygen Sensor Output Voltage (Bank 2 Sensor 2) 0.9 V 0.9 V
Short Term Fuel Trim (Bank 2 Sensor 2) NOT USED % NOT USED %
Fuel System 1 Status OL-Drive: Open loop due to driving conditions. (e.g. power enrichment deceleration enleanment) OL/CL OL-Drive
Fuel System 2 Status OL-Drive: Open loop due to driving conditions. (e.g. power enrichment deceleration enleanment) OL/CL OL-Drive
Calculated Load Value 88.24 % 88.24 %
Engine Coolant Temperature 197.6 deg F 92 deg C
Short Term Fuel Trim (Bank 1) 0 % 0 %
Long Term Fuel Trim (Bank 1) 0 % 0 %
Short Term Fuel Trim (Bank 2) 0 % 0 %
Long Term Fuel Trim (Bank 2) -0.78125 % -0.78125 %
Engine RPM 6412.5 rpm 6412.5 rpm
Vehicle Speed Sensor 61.25 mph 98 km/h
Ignition Timing Advance for #1 Cylinder 21 deg 21 deg
Intake Air Temperature 66.2 deg F 19 deg C
Air Flow Rate from Mass Air Flow Sensor 18.70014771 lb/min 141.37 g/s
Absolute Throttle Position 81.56862745 % 81.56862745 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 1) 0.82 V 0.82 V
Short Term Fuel Trim (Bank 1 Sensor 1) 0 % 0 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 2) 0.87 V 0.87 V
Short Term Fuel Trim (Bank 1 Sensor 2) NOT USED % NOT USED %
Oxygen Sensor Output Voltage (Bank 2 Sensor 1) 0.79 V 0.79 V
Short Term Fuel Trim (Bank 2 Sensor 1) 0 % 0 %
Oxygen Sensor Output Voltage (Bank 2 Sensor 2) 0.86 V 0.86 V
Short Term Fuel Trim (Bank 2 Sensor 2) NOT USED % NOT USED %
Fuel System 1 Status OL-Drive: Open loop due to driving conditions. (e.g. power enrichment deceleration enleanment) OL/CL OL-Drive
Fuel System 2 Status OL-Drive: Open loop due to driving conditions. (e.g. power enrichment deceleration enleanment) OL/CL OL-Drive
Calculated Load Value 89.41 % 89.41 %
Engine Coolant Temperature 201.2 deg F 94 deg C
Short Term Fuel Trim (Bank 1) 0 % 0 %
Long Term Fuel Trim (Bank 1) 0 % 0 %
Short Term Fuel Trim (Bank 2) 0 % 0 %
Long Term Fuel Trim (Bank 2) -0.78125 % -0.78125 %
Engine RPM 5912.5 rpm 5912.5 rpm
Vehicle Speed Sensor 87.5 mph 140 km/h
Ignition Timing Advance for #1 Cylinder 21 deg 21 deg
Intake Air Temperature 62.6 deg F 17 deg C
Air Flow Rate from Mass Air Flow Sensor 23.15130404 lb/min 175.02 g/s
Absolute Throttle Position 81.17647059 % 81.17647059 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 1) 0.82 V 0.82 V
Short Term Fuel Trim (Bank 1 Sensor 1) 0 % 0 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 2) 0.85 V 0.85 V
Short Term Fuel Trim (Bank 1 Sensor 2) NOT USED % NOT USED %
Oxygen Sensor Output Voltage (Bank 2 Sensor 1) 0.77 V 0.77 V
Short Term Fuel Trim (Bank 2 Sensor 1) 0 % 0 %
Oxygen Sensor Output Voltage (Bank 2 Sensor 2) 0.85 V 0.85 V
Short Term Fuel Trim (Bank 2 Sensor 2) NOT USED % NOT USED %
Fuel System 1 Status OL-Drive: Open loop due to driving conditions. (e.g. power enrichment deceleration enleanment) OL/CL OL-Drive
Fuel System 2 Status OL-Drive: Open loop due to driving conditions. (e.g. power enrichment deceleration enleanment) OL/CL OL-Drive
Calculated Load Value 89.41 % 89.41 %
Engine Coolant Temperature 203 deg F 95 deg C
Short Term Fuel Trim (Bank 1) 0 % 0 %
Long Term Fuel Trim (Bank 1) 0 % 0 %
Short Term Fuel Trim (Bank 2) 0 % 0 %
Long Term Fuel Trim (Bank 2) -0.78125 % -0.78125 %
Engine RPM 3975 rpm 3975 rpm
Vehicle Speed Sensor 87.5 mph 140 km/h
Ignition Timing Advance for #1 Cylinder 15 deg 15 deg
Intake Air Temperature 66.2 deg F 19 deg C
Air Flow Rate from Mass Air Flow Sensor 1.113781168 lb/min 8.42 g/s
Absolute Throttle Position 0.784313725 % 0.784313725 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 1) 0.05 V 0.05 V
Short Term Fuel Trim (Bank 1 Sensor 1) 0 % 0 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 2) 0.34 V 0.34 V
Short Term Fuel Trim (Bank 1 Sensor 2) NOT USED % NOT USED %
Oxygen Sensor Output Voltage (Bank 2 Sensor 1) 0.04 V 0.04 V
Short Term Fuel Trim (Bank 2 Sensor 1) 3.125 % 3.125 %
Oxygen Sensor Output Voltage (Bank 2 Sensor 2) 0.09 V 0.09 V
Short Term Fuel Trim (Bank 2 Sensor 2) NOT USED % NOT USED %
Fuel System 1 Status OL-Drive: Open loop due to driving conditions. (e.g. power enrichment deceleration enleanment) OL/CL OL-Drive
Fuel System 2 Status OL-Drive: Open loop due to driving conditions. (e.g. power enrichment deceleration enleanment) OL/CL OL-Drive
Calculated Load Value 9.8 % 9.8 %
Engine Coolant Temperature 203 deg F 95 deg C
Short Term Fuel Trim (Bank 1) 0 % 0 %
Long Term Fuel Trim (Bank 1) 3.125 % 3.125 %
Short Term Fuel Trim (Bank 2) 0 % 0 %
Long Term Fuel Trim (Bank 2) 1.5625 % 1.5625 %
Engine RPM 1825 rpm 1825 rpm
Vehicle Speed Sensor 55 mph 88 km/h
Ignition Timing Advance for #1 Cylinder 10 deg 10 deg
Intake Air Temperature 71.6 deg F 22 deg C
Air Flow Rate from Mass Air Flow Sensor 0.57276395 lb/min 4.33 g/s
Absolute Throttle Position 0.784313725 % 0.784313725 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 1) 0 V 0 V
Short Term Fuel Trim (Bank 1 Sensor 1) 0 % 0 %
Oxygen Sensor Output Voltage (Bank 1 Sensor 2) 0 V 0 V
Short Term Fuel Trim (Bank 1 Sensor 2) NOT USED % NOT USED %
Oxygen Sensor Output Voltage (Bank 2 Sensor 1) 0 V 0 V
Short Term Fuel Trim (Bank 2 Sensor 1) 0 % 0 %
Oxygen Sensor Output Voltage (Bank 2 Sensor 2) 0.02 V 0.02 V
Short Term Fuel Trim (Bank 2 Sensor 2) NOT USED % NOT USED %

 

do a throttle body retrain through the computer.
Search it on google or this forum.
It listed with the engine codes and such

 

So does this actualy makes my car slower at wot or what?

 

This is one of the things that reflashes (Technosquare, AAM, even Osiris) fix

 

Absolute Throttle Position 81.17647059 % 81.17647059 %

are you getting engne codes?
In car ECM Diagnostics/ECM Reset procedure:
1) Sit in the driver's seat.
2) Turn the ignition key to the ON position and wait three seconds. (Do not start the car.)
3) Fully depress and release the accelerator pedal five times in less than five seconds.
4) Wait exactly seven seconds. Fully depress the accelerator pedal for ten seconds until the MIL (SES) light flashes.
5) Release the accelerator pedal and start counting flashes to obtain the four-digit trouble code.

Long flashes (0.6 seconds) indicate the first digit of the code; count the blinks one through nine and write down the first digit. (Ten blinks indicates a zero.)
The next three digits follow in turn in the same fashion except with faster blinks (0.3 second) and a 1.0-second pause between digits.

The ECM code repeats intself until you turn the ignition key to the OFF position, at which point the ECM resets itself to standard get-in-and-drive-the-car mode.
You can look up the trouble codes in the ESM/FSM; there's a bunch of them. In the ESM, refer to page EC-639.
Additionally, if you get four blinks of ten (0000), the ECM is indicating no malfunction.

You can clear the code (and the annoying MIL) by holding down the accelerator pedal for more than 10 seconds while in Diagnostic Test Mode II. When you release the pedal, the ECM erases the trouble code(s).

http://www.350z-tech.com/zwiki/Tutorial:ECU_Reset

 

or try this:

If 'lurching' means an un-smooth start up to motion and you feel it is transmission related, the first thing I would suggest is to:

Drive the car for about 10 minutes first to warm it up so that the A/T fluid reaches in range of 50 to 80°C (122 to 176°F), then inspect the amount of A/T fluid and replenish if necessary.

1. Warm up engine.
2. Check for fluid leakage.
3. Remove the tightening bolt for A/T fluid level gauge.
4. Before driving, fluid level can be checked at fluid temperatures of 30 to 50°C (86 to 122°F) using “COLD�
range on A/T fluid level gauge as follows.
a. Park vehicle on level surface and set parking brake.
b. Start engine and move selector lever through each gear position. Leave selector lever in “P� position.
c. Check fluid level with engine idling.
d. Remove A/T fluid level gauge and wipe clean with lint-free paper. CAUTION: When wiping away the fluid level gauge, always use lint-free paper, not a cloth one.
e. Re-insert A/T fluid level gauge into charging pipe as far as it will go. CAUTION: To check fluid level, insert the A/T fluid level gauge until the cap contacts the end of the charging pipe, with the gauge reversed from the normal attachment conditions.
f. Remove A/T fluid level gauge and note reading. If reading is at low side of range, add fluid to the charging pipe. CAUTION: Do not overfill.

- Check the 5AT fluid appearance. If fluid is very dark or smells burned -Varnished (viscous varnish state) = Tranny clutch, brake scorched. Replace the A/T fluid and check the A/T main unit and the vehicle for malfunctions (wire harnesses, cooler pipes, etc.) Milky white or cloudy = Water in the fluid. Replace the A/T fluid and check for places where water is getting in. Large amount of metal powder mixed in = Unusual wear of sliding parts within A/T. Replace the A/T fluid and check for improper operation of the A/T.

- Make certain it is filled with Genuine Nissan Matic J ATF.

If that is not helpful, you need to understand this:

The electric throttle control actuator consists of throttle control motor, accelerator pedal position sensor, throttle position sensor, etc. The actuator sends a signal to the ECM, and ECM sends signals to TCM (Transmission Control Module) with CAN communication (Controller Area Network is a serial communication line for real time application). The (TCM), not the ECU, controls primary 5AT function. The TCM receives a signal from the vehicle speed sensor, accelerator pedal position sensor (throttle position sensor) or PNP switch (park/neutral position) and provides shift control or lock-up control via A/T solenoid valves. The TCM also communicates with the ECM by means of a signal sent from sensing elements used with the OBD-related parts of the A/T system for malfunction-diagnostic purposes. The TCM is capable of diagnosing malfunctioning parts while the ECM can store malfunctions in its memory. Input and output signals must always be correct and stable in the operation of the A/T system. The A/T system must be in good operating condition and be free of valve seizure, solenoid valve malfunction, etc.

Much of which needs to be diagnosed with a ConsultsII Tool. However, there is a non-Consults II TCM self-diagnosis procedure you can attempt.

TCM SELF-DIAGNOSTIC PROCEDURE (NO TOOLS)

Description: In the unlikely event of a malfunction in the electrical system, when the ignition switch is switched “ON�, the A/T CHECK indicator lamp lights up for 2 seconds, then flashes for 8 seconds. If there is no malfunction, when the ignition switch is turned “ON�, the indicator lamp lights up for 2 seconds. As a method for locating the suspect circuit, when the self-diagnostics start signal is input, the memory for the malfunction location is output and the A/T CHECK indicator lamp flashes to display the corresponding DTC.

Diagnostic procedure

1. CHECK A/T CHECK INDICATOR LAMP

1. Start the engine with selector lever in “P� position. Warm engine to normal operating temperature.
2. Turn ignition switch ON and OFF at least twice, then leave it in the OFF.
3. Wait 10 seconds.
4. Turn ignition switch ON. (Do not start engine.)
Does A/T CHECK indicator lamp come on for about 2 seconds?
YES >> GO TO 2.
NO >> GO TO ESM AT-248, "A/T Check Indicator Lamp Does Not Come On" .

2. JUDGEMENT PROCEDURE STEP 1

1. Turn ignition switch OFF.
2. Push shift lock release button.
3. Move selector lever from “P� to “D� position.
4. Release accelerator pedal. (Set the closed throttle position signal “ON�.)
5. Depress brake pedal. (Brake switch signal “ON�.)
6. Turn ignition switch ON.
7. Wait 3 seconds.
8. Move the selector lever to the Manual shift gate side. (Manual mode switch “ON�.)
9. Release brake pedal. (Brake switch signal “OFF�.)
10. Move the selector lever to “D� position. (Manual mode switch “OFF�.)
11. Depress brake pedal. (Brake switch signal “ON�.)
12. Release brake pedal. (Brake switch signal “OFF�.)
13. Depress accelerator pedal fully and release it.
>> GO TO 3.

3. CHECK SELF-DIAGNOSIS CODE

Check A/T CHECK indicator lamp.
Refer to AT-104, "Judgement self-diagnosis code". If the system does not go into self-diagnostics. Refer to AT-244, "PARK/NEUTRAL POSITION, MANUAL MODE, BRAKE AND THROTTLE POSITION SWITCH CIRCUIT" .



>> DIAGNOSIS END

If that shows nothing amiss, the ESM suggests heading to the dealer.
__________________

 

^+1 Technosquare FTW

 

so theres no way to go above %82 without a reflash?