So after reading all of this and trying my son's 2011 V6, we did find out about the limiter thing. The speedo is also off by around 20mph so the dealer is trying to figure out which sensor is responsible.
As an aside, which DS and tuner/tune are recommended and is there anything else I need to add/modify to make this pony able to run faster yet be totally safe (vehicle/mechanical wise).
Driveshaft safety loop
And the one on AM seems what a lot of people get. The tuner, theres a few i think i will be going with BAMA. I would also get better tires (if you dont have PP). Also a driver mod would help, both you and your son. If you want to run your car at serious speeds maybe a racing course could help. Teaches you about awareness, the capabilities of your car, so on and so forth
2012 v6 6MT: 32kmiles
Current: Air Raid CAI, Diablosport intune, FRPP sport axle backs, Strut tower brace, 3.7 emblems, eibach adjustable sway bars, J&M lower control arms, 3.55 frpp gears, axle exchange aluminum drive shaft, 19 inch BBP wheel set up
wants:no more issues
2002 mazda miata 5MT "track rat
Future" Custom valved and springs Fat cat motorsports, 9LB wheels, toyo proxxs r888, turbo pushing 250whp, sparco seats, custom roll bar