moto guzzi v7 stone exhaust - XoilacTV

Any recent experience with the GTM V7 I-II FULL 2>1 EXHAUST SYSTEM from GuzziTech? I'd be interested in the stock-mount megaphone. Website says "GTM ECU Flash HIGHLY recommended.

Stainless steel conical exhaust for Moto Guzzi V7 III. Available polished and black finish. Homologated product with removable DB Killer.

The Arrow exhaust takes the Moto Guzzi V7 Stone Ten's performance up a notch, increasing power from 48 to 49 kW (66.5 horsepower) at 6700 rpm and maximum torque, which improves from 73 to 75 Nm at 4900 rpm. The Ten version's Arrow exhaust is also available as an optional for all bikes in the Moto Guzzi V7 family.

Short exhaust with reduced length specific for Moto Guzzi V7 III. Available polished, satin and black finish.