Building a custom exhaust isn’t about just bolting on the biggest pipes you can find as flow, sound and packaging also factor ...

For those Cadillac CT4-V Blackwing owners who many a little more zing from their exhaust, AWE is now offering this new ...

In addition to the body modifications, eight exhaust pipes now stick out of two rows ... For example, the back features small endplates on the wing and a diffuser that improves aero efficiency ...

With all those exhaust pipes stuck to the back ... a new rear diffuser, and a new rear wing that improves downforce and uses small endplates for more aero efficiency and improved stability ...