I was driving around today and I pulled up next to this MR Toyota thing and when he shifted it sounded exactly like an 18 wheeler when it shifted.

How did he do that? It sounds pretty cool, just as cool as a blow off valve on those turbo charged cars.

 

Depending on the model it coul have been supercharged stock. Or he could of added a big ass turbo with a huge blow off valve.

 

Damn, I was hoping I could do something for the Jeep, does that mean that a majority of 18 wheelers also have turbos or superchargers?

 

All 18 wheelers for the last 30 years have a turbo

 

Ah okay didn't know that.