Just curious as to why this may be. The 62 went bad, from day one it made a lot of noise and spooled very slow. I let my dad borrow my 64 until he gets the 62 back and it spools much faster and is much quieter through the intake. Nothing was changed in the tuning of the car. The same wastegate was used. There were no exhaust leaks with the 62. Just wondering if there might have been problems with the 62 from the beginning.