Quote:
Originally Posted by aspera
Don't forget to include Subaru's TGV (Tumble Generator Valves) and their camshaft phasing technology.
Just like TVIS, TGV gets ripped out to make big power. Let's hope the new car doesn't have it.
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TVIS doesn't get ripped out to MAKE big power, it gets ripped out in LIEU of big power.
IE: you tune/upgrade the engine to the point that the powerband has changed so much, TVIS is no longer helping you, rather, hindering you by how it manipulates the air-inflow.
Thats the standard in 4A-GE engines at least. Taking off TVIS before doing any major tuning on a 4A is typically seen as being a mistake, as its there to actually help the car in low-revs.