03-31-2012, 04:19 PM
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#7
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Drives: 2011 Camaro 2SS/RS
Join Date: Apr 2011
Location: US
Posts: 3,291
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Interesting. Just put my solo HF cats on with only stock exhaust and it sounds so much better. I was thinking about the Atak catback system too, but after reading this maybe not. I am thinking about going with Solo's Mach XL catback system with J Pipes so I can have a drone free sound.
St33v-do you have the L99 or LS3? I was curious if you felt that you car seems to have a hesitation to it when getting on the gas after installing the HF Cats. I just pulled mine out of storage and the gas is about 4 months old (93 octane with stabil).
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2011 Camaro 2SS/RS, Circle D 3200, ADM Transmission Cooler, BTR Valvetrain, Cam Motion .621 .595 228/244 113+4, ARH 1 7/8 full exhaust, Cold Air Inductions, Katech C5R TC, Melling HV, BTR SLR lifters, Trunion Upgrade, LS2 Dampner, LS9 head gaskets, Bo White PTB, MM can, GFX, Subs, B&M Deep transmission pan,
Holley fuel rail, Proform valve covers, relocated coil packs 
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