Hi, fellow 350z owners and others. I have some problems that just recently came up with my Z. I just changed my clutch three weeks ago, and the car drove perfectly.Today, I start the car; idles nice and normal, start to drive and i notice when i press in the clutch simultaneously the rpm needle spikes up and down but the motor and tranny feel normal. The shifting is fine, but the spike is there throughout all gears, and it feels at times theres a studder/hesitation when the arrow starts freaking out at higher rpms, but only at the press of the peddal.

Sorry ahead of time if I confuse ppl.