Trouble

Nismo221

I have a 2010 Nismo, when I got in the car today to drive to work everything was fine, car started up the way it should and everything. I pulled out from my place and the car seemed like it was trying to die, so I pulled over. The car never died on me it went back to idling just fine. I could not find anything wrong so I turn around and went back home. On the way back I realized that it only started acting funny above 3k rpms. Well it gets up there its like the throttle does not want to give the car anymore power and that the motor is trying to choke itself out. I do not have Uprev on the car so its not a valet mode for anything. What could be causing this? I guess the car gets towed Monday morning to Nissan.

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Stillen Gen 3, Motordyne M370 Intake Manifold,
25 row oil cooler, Z1 test pipes, Greddy Ti-C 70mm dual exhaust, 15mm front/20mm rear spacers, RE-11's, V1 detector, LED interior lights, LED tag lights, Password JDM CF engine and radiator cooling covers.