TOP JDM TOYOTA 4A-GE SECRETS

In spite of others claim of a 20HP or even more maximize- on modified heads alone, this is actually not possible with no camshaft or pistons altered. Toyota has casted and machined all their 4 valve heads to pretty near and precise tolerances for Avenue (and rally) use.That's what the resistor pack on some variations from the 4AGE does.Your MicroSq