catalytic converters

[Robine]

I have an 2004 Gt, is there any advantages of removing both of the rear converters?

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[cliffyk]

Only if it's done in conjunction with a catted 2-1/2" H or X-pipe, and a 2-1/2" catback--and then a premium fuel tune.

Just removing the rear cats (assuming they are not clogged up) is a total waste of time and energy from a performance improvement perspective...

[dimebag]

Take em all off

[teej281]

^^^Agreed

[98MustangGT46]

If your gonna do it. Do it right and do it once. Buy a catted mid pipe or go with and off road pipe if you can.