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02-08-2014, 04:26 AM
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#1 |
 Drives: - Join Date: Nov 2010
Location: Bahrain
Posts: 164
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Replacing a LS3 to L99 factory catback in a blown cammed Camaro SS?
I have a 2011 automatic Camaro SS with TVS2300, OD Cog drive, GT11 cam kit, LS3 conversion, ZL1 fuel pump, stainless works LT headers(off road pipes) and the factory LS3 catback. ..*
Motor is fully tuned and dynoed @530rwhp 540rwtq @7.5psi I recently replaced the LS3 factory cat back with my original L99 factory catback ..I noticed a remarkable change in exhaust tone. . It's much lower. . I would assume because the L99 has a squared resonator which the LS3 doesn't. . My question is whether I should worry about tuning it again or whether such change will strangle/choke the vehicle ...What do you think? I appreciate your comments. .. |
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02-08-2014, 07:39 AM
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#2 |
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Account Suspended
Drives: 2010 2SS/RS Red Jewel L99 Join Date: Jun 2011
Location: NB,Canada
Posts: 834
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We did this on a m6 car the other day.Customer wanted something quiet.We removed the LS3 system and replaced it with the L99.
Sound good,not loud at all at idle or cruising.This one,the tune did not needed any changes when we swap exhaust. It made 615rwhp. |
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02-08-2014, 07:46 AM
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#3 |
 
Drives: 2011 camaro ss vortech supercharged Join Date: Aug 2011
Location: marion VA.
Posts: 524
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It should not change it enough to worry about a tune
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