Posts Tagged ‘boost’
Tracking the EGT temperatures in my TDI300
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Tracking the temperature of the EGT much more complex then the tracking I did with the turbo pressure values.
The factors that are raising the EGT temperature are:
1. Pressing the gas pedal (immediate upload)
2. Temperature environment (differences of tens of degrees in EGT) – hot or cold day.
3. Continuous load on the turbo engine (accelerator pedal on maximum for a few minutes.)
4. Of course that also the road conditions affect (going uphill, strong winds etc.)
The gauge that I’ve installed can store the maximum value reached. To date, the values Celsius, UPSTREAM (after engine, before turbo) are:
1. Most relaxed urban driving – 200-300C.
2. Traveling in non-urban areas without pressing the gas pedal down- 250-350C.
3. Traveling in non-urban areas with the gas pedal pressed down to the maximum with around 17PSI, temperaure values on 350 and up. Generally around 450- 520.
4. Observed Max Value of EGT Temperature – 580C.
Boost gague values on TDI-300 engine
Currently, before I make any changes the turbo boost values are (in PSI):
1. Most relaxed urban driving – turbo completely inactive. 0 PSI.
2. Traveling in non-urban areas without pressing the gas pedal down – turbo at around 10PSI and will reach up to 15PSI under the conditions of the road.
3. Traveling in non-urban areas with the gas pedal pressed down to the maximum -turbo pressure around 17PSI, from about 2500 rpm.
4. Maximum value of turbo pressure- 18PSI.
Later on, I will add EGT values on the same conditions.
Boost Gague installed
I’ve just installed a boost gague I’ve got from eBay.
I have installed it from on the exit of the turbo to the injection pump.
The photo above shows the 2″ boost gague I’ve installed. I’ve got it from eBay. Model is Swoosh SA-58.

1997 Land-Rover Defender 110, TDI300 engine.