Aftermarket CAT replacement Please help.

[Suntzu]

Ok fitted.

Its a 300 cell magnaflow ceramic. He couldn't find a good spot for the metal cat version ( no space for the sensor so im told) but the flow rates the same.

I cant hear it all all, sounds stock. Maybe quieter actually!

Had to say on buttdyno. Feels like a little more torque, but no more power, especially under 4000rpm where the torque band feels a little fatter.

That being said I have Jtune mild and I thinking it might take a while to settle in like my header did.

[E-Gene]

Ok fitted.

Its a 300 cell magnaflow ceramic. He couldn't find a good spot for the metal cat version ( no space for the sensor so im told) but the flow rates the same.

I cant hear it all all, sounds stock. Maybe quieter actually!

Had to say on buttdyno. Feels like a little more torque, but no more power, especially under 4000rpm where the torque band feels a little fatter.

That being said I have Jtune mild and I thinking it might take a while to settle in like my header did.

So what did you do with your O2 sensor?