300zx 96 na auto staying in OL drive but when I rev it it says CL. I deleted egr carbon canister deleted pcv installed oil catch can but do I need a tune because 96 ecu is sensitive and I don’t know what the problem is the exhaust smells like sulfur while idling.when I drive it it shifts in 2nd gear perfect but 3rd gear I have to get it to 5k rpm let go of the gas then when I push the gas again it shifts I have some videos but I don’t know what the issue is