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my 180 is alot better below 3000 rpm. it picks up a lot better and revs better. made a noticable difference to the way it goes and sounds. the decat made the best difference on mine. didnt really notice any difference with the cat back untill it went on
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Astra GSi turbo
Regal Autosport Astra GSI Turbo 304 bhp 356 lb/ft
Thorney motorsport Vectra vxr 305bhp 398lbft
Now its time to build a big turbo MG ZS
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