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Old 08-24-2011, 09:13 AM   #143
Drago77
Treasure Coast Camaro 5
 
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Drives: SW 11' 2SS/RS LS3 Vert, Blk/Blk
Join Date: Feb 2009
Location: Port Saint Lucie, Florida
Posts: 4,577
No "Stock" baseline... but here's the comparison going from the cat-back, to the headers, to the tune:

2011 LS3 w K&N, Magnaflow Comp Cat Back:
395.26 rwhp
383.38 torque

W/ SW 1 7/8" LT Headers NO tune:
415.7 -r
408.58-t

Completed, WITH tune:
427.99 -RWHP
416.15 -TORQUE
Not too shabby, especially at 95 degrees and 90% humidity!

Need to come up with another 22 HP and I'll be happy!
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