ITG & 64mm TB

Looking at getting a 64mm tb and have currently got a ITG induction kit, just wondering if any1 else has had or got this set up and there experience of it ? I imagine if wont perform any different to a standard air box with 64 TB, if anything maybe worse ?
 
Looking at getting a 64mm tb and have currently got a ITG induction kit, just wondering if any1 else has had or got this set up and there experience of it ? I imagine if wont perform any different to a standard air box with 64 TB, if anything maybe worse ?

Henderson has a custom itg maxogen with 64mm TB and no loss in power.