Mongoose are proud to release their new product for the Fiesta ST180 1.6 Ecoboost.
Our modular design initially looks complicated but it all has a reason
1, Mongoose designed this using 76mm Pipework and flexi section, this was then split into two parts to make it easier to ship and to install.
2, The flexi section comes as 2 different options, with either a 2.5” flange or 3” flange on the end where it meets the rest of the cat back system. We wanted to make a true 3” bore system for this vehicle, but when we tested the 3” flange up against an OE cat back we found that the flange on the OE cat back is only 78mm tall and with a 76mm hole this would only give 1mm each side for the gasket to seal which is not good enough and will most likely end with a leaking joint.
3, The mongoose decat is available with a 2.5” flange so it mates up to and OE system if you like or you can purchase it with a 3” flange to mate up to a Mongoose 3” cat back system (also we now do a 3” adaptor for the cat back system giving a full turbo to back 76mm bore)