Gti6 cat advice

[GtiJimmy]

Thanks for the info mate, in regards to sports cats vs standard after market cats, which do you reckon would be best for maintaining as much of the original performance- low end torque, etc? Or is it pretty much not joticeable... Tho saying that i teally do notice even the slightest loss of power as ive had her so long. I just want her to be as close to standard issue as poss