You will need to install the Cobb AP stage 2 map or go open source tune if your good with a lap top.
Check out the Tuning forum and the Vendor forum for info.
I use www.tuningalliance.com
a vendor on here my tuning needs.
You also should install a catless up pipe
178,000+ miles, 5/20/12 new ej257 short block, 8/20/11 installed VF52 turbo, @20.8psi, 280whp, 300ftlbs. CHECK your oil, these cars use it.
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