Im just wondering what size cat i should go with. Ive currently got an Apexi N1 cat-back, Its the GST version exhaust, I think its bigger than the NT one right??? What size cat should i get to match up with this? 2.5? 3? Which one will mount up to the N1? Will I notice a gain if i get a hi-flo cat? Thanks for the info! ~Luke
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I used to have a 420A...
'92 TSi AWD
11.8 @ 119mph 470awhp 405 ft/lb torque 30psi on E85 w/ Borg Warner S256 Turbo