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To go hi-flow cats or not to, that is my question
Does anyone here have experience with a modified header/exhuast setup using the existing cats, compared with the same mod'ed setup with hi-flow cats? Basically, do the existing cats in the stock BA Xr8's have sufficient capacity built in not to warrant new hi-flow cats? I'm told by one bloke who hasn't changed them out that they are fine, and that new cats won't do make any significant changes to performance figures.....
Any advice?
Cheers,
Simmo.
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