Vauxhall Astra VXR tuned in Bletchley, Milton Keynes.

This VXR had some issues before tuning. The one way valve on the rocker cover was faulty and the diaphragm in the actuator had gone meaning the actuator wouldn’t hold pressure / vacuum. The max boost we could get from this in the mid range was 1.2 bar and it instantly fell off a cliff.

We did our best with this and got 268BHP according to data log calculations. With a new actuator this should be a strong car and achieve up to 300BHP!

SM Tuning – www.smtuning.co.uk

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