OK after some thought I think I can do this - just basically a compression check right? I'll do some research on how to and tools required. I don't know why it sounded too tech for me before. Thanks Ryk. 
Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge
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