THE ULTIMATE GUIDE TO TOYOTA 4AGE

Despite Some others assert of a 20HP or even more improve- on modified heads by itself, this is simply unachievable devoid of camshaft or pistons improved. Toyota has casted and machined all their 4 valve heads to incredibly near and accurate tolerances for Road (and rally) use.VVT is ideally turned on at a lower revs and off at greater revs. This