Nissan 350z Turbocharged

I have owned this car since Dec 2013. I bought this car from a dealer who did not know the history. The car came with the turbo kit already installed. What I know about the turbo and drive train: The turbo kit was installed in Tucson AZ by PSI in 2011. By other paperwork in the car I estimate the car had around 80K miles on it at this time. The turbo is a Garrett gt3076r. includes a tial wastegate and tial Q BOV with tial aluminum BOV flange. Intercooler is rated up to 550hp. Has 525cc fuel injectors supplied by a Walbro gss342 fuel pump. AEM fic 30-1910 fuel injection controller. 4in inlet air filter. Stainless steel tubing for turbo. y pipe. down pipe. and dump tube. Also has an intake plenum spacer. The clutch master cylinder was also replaced in 2012. What I do not know: I do not know how it is tuned. My guess would be aem tuned but not sure. I do not know the HP/Torq specs of the car but it is definitely enough to have fun and acquire speeding tickets. The check engine light is on. has been since I bought it. After doing research I have found that it is a common problem when these cars are turbocharged and run pipes with no catalytic converters. That's right this car has no catalytic converters so if you are from an area that does emissions testing then you Know. I have replaced the O2 sensors. cleaned the MAF. and ran injector cleaner through to try and stop the code. It may need a new tune. especially if you are from an area that does not have 91 gas. current tuned octane. Car has Hankook ventus v12 245/35/r19 on front and bridgestone potenza 285/35/r19 on rear mounted on avant-garde rims. New tein basis coilovers were installed in Nov 2014 along with Spc camper kit for rear. The boost gauge says it is pushing about 7psi. The transmission is a 6 speed manual transmission and I think it has a performance clutch. not certain. I also think the rear gear differential is also changed. again not certain. It does have a smaller than stock gas tank. Inside is cloth seats with the driver side having a small tear from getting in and out of the car. Car has pioneer AVIC d3 head unit with DVD and bluetooth. can be upgraded to include XM. and I installed new Kicker speakers around DEC 2014. This is a fun car to drive and the only reason I am selling is because my wife did not like it when I bought the car. I had extra income when I bought it. which is going to expire in OCT and her job is seasonal. taxes. I do not want to hear the grief I will receive when we are having to cut other expenses to pay for my car. It is not worth it. However. if the car does not sell I made a valid effort so I am not going to give the car away. I think the car is priced quite nicely for the upgrades that are done plus the condition of the car. I drive the car daily so miles will go up. I have only put 6k miles in the year and a half that I have had it.