No, I did not delete the secondary cats. They have 4 options for the mid pipes, cat delete, no secondary cat delete, and then each one you can get it with or without the AFM valves.
I have the 60610 which does not delete secondary cat but it does have the AFM valves.
I did not do the mid pipes for the added power, I did it for the sound, it's much more aggressive sounding this way, but to be honest I think the axle-back Atack would be very comparable in loudness to my S-type with mid-pipes. I was just nervous to do Atak because I had a bad experience with magnaflow so I didn't want to pick the loudest options, but now that I've had the S-type I think it would have been fine with the Atak!
I have even considered posting a thread looking to trade my axle back w/NPP for someone that bought the Atak w/NPP that wants something quieter, but have been busy working on some other stuff on my car so haven't gotten around to it yet.
Quote:
Originally Posted by megaphone
With your stock midpipe did you delete the secondary cats? I'm trying to justify buying midpipes if the only difference is the secondary cat really, since mishimoto already confirmed the crimp in the stock exhaust doesn't inhibit flow.
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