Exhaust Sorted

Nothing fancy as I want it to be as stealth as possible. Hence the aptly named K-Tec stealth exhaust system. The 90 degree bend at the end of the backbox isn't the greatest for flow but as its so far from the exhaust manifold and the gas speed and temperature will have dropped off by then it doesn't really hurt things.

Cat is going to ensure there is plenty of flow capacity in the exhaust. Modern Cat designs are very large/efficent but the 172 being a 6 year old + design doesn't benefit from this so there are gains to be had by removing the standard cat.