My car should also have R3 acess engine and exhaust
I just bought it a month ago so not really sure about how the car behaves.
I bought new MAP and spark plugs, will fit everything tomorrow and try it out. Engine mounts are also shot, so the flexy could be in bad shape. I have exhaust/ emission error on dash, so probably the car has no catalysts. I don’t know if the car was ever remapped...