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pre cat
is there any benifit in removing the pre cat from the standard manifolds. i know a few have done this. reason i ask is i have herd janspeed manifolds offer very little gain so i dont really want to part with £500-600 for a little gain when i can have a similar gain by just removing the pre cat
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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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Linear Mode
