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hey - was the hi flow mcuh better than your compliance one?

Hard to say, wish now that I'd got the big body cat-converter (from BATMBL) rather than the small body.

But Id say it was worth it, the standard comliance cat looks to be around 2inch diameter, whilst the one Ive just bought is a 3inch diameter, and that tied up well with the new 3inch stainless dump pipe and the old 3inch cat-back system.

See my signature below to see final power output. Got a few more bolt-ons to go on soon, so will have it all retuned. At the end of the day, I'd suggest the hiflow is less restrictive (flowing a larger area) than a standard cat converter....

BW

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