Does anyone know if changing the CATs on a Magnum RT (to, say, MagnaFlow performance CATs 16421) will give any significant increase in power, or any nicer tone to the exhaust?

I've already changed the CAT back system to a MagnaFlow 15628 street legal system, but am wondering if I should change the CATs too.

Is it just the CAT back that gives the most power increases?
Or will I gain as much again with better CATs?

And if the CATs should be changed, which are the best and where should I buy them? Would it be the MagnaFlow 16421's? And would High Horse Performance be as good a place as any to source them?

Your insight would be much appreciated!
Thanks,
Dave

 

don't know if this is the info you're looking for but all I did was cut out the suitcase muffler and run on the resonators, sounds great seems to flow better and run better too.