To withstand the high temperatures laser cut cast steel flanges are used to ensure long lasting leak free reliability. In some cases Invidia will also offer catless versions for off-road use where every ounce of performance is required.īecause of these reasons, Invidia front pipes and cat pipes make for the most popular exhaust upgrade that adds a substantial bump in both horsepower and torque. Invidia Exhausts use a larger pipe diameter and smooth bends which allows exhaust gases to pass with fewer restrictions and turbulence. A High-Flow catalytic converter is then utilised to still control emissions for street driving legalities but with minimal impact to exhaust flow. The factory exhaust will always have restrictions and these restrictions are normally highest near where the catalytic converter is found.
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