A
Anonymous
Good posts 
I had a full decat + free flow exhaust on a mk1 V6 and there was no drop in torque, although no noticable increase in power either.
Had a cat-back exhaust installed on my M Roadster and it then had a obvious flat-spot at 2krpm.
Engines vary dramatically.

I had a full decat + free flow exhaust on a mk1 V6 and there was no drop in torque, although no noticable increase in power either.
Had a cat-back exhaust installed on my M Roadster and it then had a obvious flat-spot at 2krpm.
Engines vary dramatically.