Mazdaspeed downpipe/catalytic converter upgrade
- Product Review (submitted on September 28, 2017):
This is probably the single best simple mod I have made to a car in 50+ years of driving.
Power flow is smooth, torque is more even throughout the range, combined with a cold air intake this will easily outperform the new ND Mx5.
Expensive to get it to Canada, but worth it!
(originally posted 5/5/2017)