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2012 GT500 gains

1410 Views 1 Reply 2 Participants Last post by  Osiris
Hi all,

I have a 2012 GT500 currently with a catback exhaust. I am planning on doing the following mods within a month. How much hp gains can I expect? How much would that affect acceleration (0-60)?

2.6 Pulley & Idler
Overdrive harmonic balancer pulley
Twin 65mm Cobra Jet throttle body
Spark plugs
Heat exchanger

Thanks in advance
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550 ish rwhp IIRC
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