Practical Performance Car 306 'tuning' feature

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I recently bought the PPC mag and noticed they had a feature on tuning the 306 and in that they mentioned the XUD and making the most of it.
They mentioned fitting a hybrid turbo, transit pump head, Xsantia injectors, bigger bore fuel lines and banjo's and fitting an electronic lift pump to kick in when on boost to supply extra fuel.
Quite an interesting read for you 306 owners as I was expecting it to be quite inaccurate when it came to the XUD part.

I am curious about this inline pump though discuss.....