LS1 Sounds - Flowmaster

B&B
Bassani
Borla
Borlamouth
Camshafts
Corsa
Custom
Dynomax
Dynomouth
Edelbrock
Flowmaster
GHL Motorsports
GMMG
Headers/Cutout
Hooker
MAC
Magnaflow
Mufflex
Random Tech
SLP 2otl
SLP Dual-Dual
SLP Loudmouth
Spintech
Stock
True Duals
TSP Rumbler
Unknown

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Car	Header	Y-pipe	Cat-back	Comment
'98 SS	MAC	ORY	Flowmaster	Custom cam, ATI ProCharger
LS1	Stock	Stock	Flowmaster	80 series catback
'99 C5	Stock	Stock	Flowmaster (mufflers only)	Mufflers only, not the cat-back.
'00 SS	Stock	SLP	Flowmaster (80 series)	Center Mounted Exhaust
'02 WS6	Pacesetter LT	Hooker ORY	Flowmaster (80 series)	TSP 233 Torquer cam
'97 LT1 Formula	Jet-Hot LT		Flowmaster	Comp 224/230 112 lsa cam (idle, to see the same car with an open cutout click here)
'98 Z28	Flowtech LT	ORY	Flowmaster
LS1			Flowmaster	TR custom cam To hear the same car with open headers, click here!
'98 T/A	Stock	Stock	Flowmaster (muffler)	To hear the same car with a GMMG cat-back, click here!
LS1	Kooks LT	Kooks Y	Flowmaster (80 series)	Comp 224/228 nitrous cam (cutout gets opened for a few revs at the end)
'00 Z28	Stock	Stock	Flowmaster (Crossflow)
LS1	Kooks LT	Kooks Y w/ Magnaflow 5300 cats	Flowmaster (80 series)	Bluebird
'95 LT1	Stock	Random Tech cats	Flowmaster	Dynomax bullet in the I-pipe, 3rd gear dreive by
'00 WS6	Pacesetter	ORY	Flowmaster
			Flowmaster
		no cats	Flowmaster
LS1		no cats	Flowmaster	The SS has an SLP Loudmouth

With their popularity on other platforms, it is surprising that Flowmasters aren't regarded highly in the LS1 F-body community. Most message boards will recommend staying away from the kit based on sound and also power production.