So I have a vert that I picked up bone stock. The guy was a second owner and he pounded this thing to death and murdered the trans and split the radiator. I bought it cheap and decided to save it. After a few junk yard trans fails I had a buddy with a 95 he was ls swapping so I bought all of his 5 speed 3.8 stuff cheap. Swapped all of it in the car. I decided to cat back kit, Cai lowering springs wheels and tires chin spoiler fog lights all that stuff. So with the 5 speed swap the car wants to stall inbetween shifts if u granny shift it or when I stop with clutch in. Do I need a 5 speed ecm or just a tuner?