from a auto, i noticed that it sort of goes flat on top. my old aspec motor would spool an Just keep pulling all the way to redline pretty much. My current jdm motor dosn't realy hesitate or anything it just dosn't feel the same. They way i realy notice it is this onramp i take. If i get in it there is a slight bend right as i am hitting about 4500 in second. The old aspec motor would light em up and make a nice drift, the jspec takes a flick of the wgheel to get em going. my old aspec motor used 1 qt of oil every 2K miles the jspec won't even use a quart every 5K oil change (flame suite on).