Sorry I did not respond earlier; I do not get to read this forum often.
NSXY, the website you attribute to Franc Yarde is not his. It apparently belongs to a Tubi/NSX user who posted pictures and benevolently mentioned the name and address of the importer. Moreover, the other websites mentioned in the last 2-3 posts of this thread do not belong to Tubi or TSI but to auto(some Ferrari) dealers who make their claims based on their own experience (on Ferrari cars). My earlier statement claiming a modest HP increase is based on my own discussions with exhaust manufacturers here and overseas who insist that an exhaust muffler alone (without intake/headers, thank you Ilya), when installed behind catalytic converters, rarely produces more than 2% RWHP increase.
Tino S.
NSXY, the website you attribute to Franc Yarde is not his. It apparently belongs to a Tubi/NSX user who posted pictures and benevolently mentioned the name and address of the importer. Moreover, the other websites mentioned in the last 2-3 posts of this thread do not belong to Tubi or TSI but to auto(some Ferrari) dealers who make their claims based on their own experience (on Ferrari cars). My earlier statement claiming a modest HP increase is based on my own discussions with exhaust manufacturers here and overseas who insist that an exhaust muffler alone (without intake/headers, thank you Ilya), when installed behind catalytic converters, rarely produces more than 2% RWHP increase.
Tino S.