After I got my Datascan software and lead I did a search for settings that I could use as a guide to set my engine up, here are the results that I found.

If anyone has anything they would like to add or comment on please feel free to do so. Once these figures are given the ok I would like it to go in the FAQ section.

 

Paul

 

Basic Settings for TT.

 

Idle RPM 750

Closed Throttle Position

TPS 0.44-0.46

Timing set at 15 Deg

IACV-AAC/V 15%

Injector Pulse 2.2 msec

Injector Duty 1.61%

A/F Alpha 109%

Mas Air Flow 1.30v

Water Temp 80 Deg C-84 Deg C

Fuel Temp 25 Deg C-35 Deg C

Can anyone help with this?

 

cheers Paul

mate, looks OK to me.. I know there is a post on here somewhere and Jeff has given those specs...

so have a search and compare them... cheers :)

Thanks for that.

 

Paul

some additions to your values:

 

> Closed Throttle Position

> TPS 0.44-0.46

 

These values are only valid at idle and and the values are linked.

if the Closed Throttle Position switch is on, the TPS should show between 0.4-0.5volt.

 

You can reset the closed throttle switch by unplugging the TPS plug for 10 seconds (the oval plug that is on the seperate small cable)

 

 

> Timing set at 15 Deg

> IACV-AAC/V 15%

> Mas Air Flow 1.30v

 

+ P/N position switch: ON

 

these values are valid at idle and the engine should be fully warmed up.

Timing may show 25 BTDC if the P/N position switch is OFF (may be the case for a malfunctioning neutral switch or an auto to manual conversion.)

 

The airflow is an approximate value, may vary slightly between cars.

 

 

> Injector Pulse 2.2 msec

> Injector Duty 1.61%

 

Again, average values for STANDARD injectors (at idle)

may vary slightly between cars

 

 

> A/F Alpha 109%

 

again this is an average value and only works if you have fully functional O2-sensors and ideally you want this value to be close to 100%.

any value over or under 100% means the ECU has to compensate with less or extra fuel to get the mixture right.

Extreme compensations (> +/- 15%) usually mean something is wrong with either air (airleaks) or fuel (injectors/fuel pressure)

 

> Water Temp 80 Deg C-84 Deg C

> Fuel Temp 25 Deg C-35 Deg C

 

these values are valid for a warmed up engine.

NB: the fuel temp values are ignored by the ECU for the most part, so not really important in respect to getting the car running better .

 

another important one is battery voltage: should be between 13.7 and 14.3 Volt (at any rpm)

If the value is off, it may indicate (future) problems with the alternator

 

 

-Eric

forgot to mention that the timing should always be verified with a timing light.

 

Also the later Zeds don't follow the 15 BTDC at idle rule.

They work quite different and use a variable ignition timing system to get better emmission ratios.

Because of this the timing hovers between 5-10BTDC at idle.

Thanks Eric for confirming the settings I posted and adding yours to the mix.

 

cheers Paul