hi i'm bruce. i have a 2000 gt that has had its automatic taken out and a tremec t3650. i bought it like that. i need help because it has a strong surge in the idle. it also wont go over 60 because the speedo reads 120 and thats the governor limit but really the cars only doing 60. but i know i need a tune to fix that. but can someone help me with the surge problem?

thanks

 

a tremec t3650 put in*

 

Tune will fix it. The computer still thinks it has an auto

 

thanks for the reply. so the surge is associated with the trans swap too. i thought so because the car thinks it has a torque convertor. thank you for the reply.