I saw a photo on another forum of a Subaru that had it's blow off valve piped into the exhaust manifold, so that the rush of air out of the BOV blew through the turbine to help maintain spool between shifts. So essentially the turbo spools itself between shifts and loses the least amount of speed.
Just wondering why this isn't normally done? It might only require another wastegate or something to make it reliable. It seems to me like a very good idea. Especially if, normally between shifts, the turbine is acting against almost a vacuum from the exhaust ports(when the throttle is closed), and atmospheric pressure on the other side through the exhaust system.
Just wondering why this isn't normally done? It might only require another wastegate or something to make it reliable. It seems to me like a very good idea. Especially if, normally between shifts, the turbine is acting against almost a vacuum from the exhaust ports(when the throttle is closed), and atmospheric pressure on the other side through the exhaust system.
