I’m sure a lot of people have noticed this, but when you install the first level of transmission upgrade (street) on most of the older cars (such as the classic muscle cars) it magically gives them an extra gear
The description of the upgrade is “install a SHORT THROW SHIFTER and then something about the oil being changed out.
I know when I installed a short throw in my car, in real life, I didn’t gain. 6th gear lol.
Also exhaust doesn’t change idle, cams do.
Please look into this?