Thread: Size of exhaust pipe before cat

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#1 Re: Size of exhaust pipe before cat
blueguy

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The Blue One

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07-19-2011

Factory is most likely 2.25".

Aftermarket GXP exhaust is 2.5" from what I've seen.

I'd save your money...cutouts are junk.

Sold WBody's: '03 Blue GTP/'98 Green GTP/'98 Silver GT/'05 GXP
'99 Chevrolet Silverado Classic Z71 4x4 - K&N Intake/Gibson Exhaust #TRUCKTHINGS
'12 Buick Regal Turbo - ZZP CAI/20% Tint/HID's
'89 Ford Mustang LX Notchback - LM7 5.3, 4L80, 9", HX40
'04 Chevrolet Corvette MRM A4/LS1 - TSP LT's, 3"O/R X, AFE S2 CAI

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cat, exhaust, pipe, size

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