have a brava 1.9jtd and have been told i can tweak the turbo to give more boost?? is it possible and is it easy to do. it is a standard turbo aswell btw, cheers

matty_jones_1989 said:

have a brava 1.9jtd and have been told i can tweak the turbo to give more boost?? is it possible and is it easy to do. it is a standard turbo aswell btw, cheers

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Not really as yours is a JTD.
On older non ECU governed engines you were able to tweek diesel engines by doing 2 main things which need doing in balance and at low levels to maintain reliability and safe running temps and pressures.

1 increasing the wastegate blow off pressure. Usually by shortening the wastegate arm on the turbo. This will allow the turbo to boost higher before blowing off pressure.
2 increasing the mechanical diesel pump by increasing the fuel flow.


Because you have a JTD, the engine is sensored and electronically governed therefore to tune, it needs to be done electronically. Ideally a remap