Installed a Thermal system with POWERFLEX hangers on a Fiesta ST yesterday and I have to say it was the easiest install I've done.
The exhaust uses slip clamps with 1 ball clamp plus includes a new under chassis brace with new exhaust hanger that eliminates one of the OEM hangers. So basically you are getting an improved chassis brace with more clearance for the 3" exhaust plus a better hanger from Thermal. The design is great.
If you are installing one of these systems my suggestion is to leave the hanger by the downpipe OEM if you don't have an upgraded rear motor mount, if you have an upgraded rear motor mount then by all means replace it. Then all you will need is the last 2 hangers back by the muffler section. As stated before the mid OEM hanger / hanger mount is no longer used with the Thermal R&D system.
links to the products mentioned
POWERFLEX hangers
https://whoosh-motorsports.myshopify.com/collections/s550-mustang/products/powerflex-exhaust-mount-hanger
Thermal R&D exhaust
https://whoosh-motorsports.myshopify.com/collections/s550-mustang/products/thermal-r-d-3-fiesta-st-cat-back-exhaust-2014
The exhaust uses slip clamps with 1 ball clamp plus includes a new under chassis brace with new exhaust hanger that eliminates one of the OEM hangers. So basically you are getting an improved chassis brace with more clearance for the 3" exhaust plus a better hanger from Thermal. The design is great.
If you are installing one of these systems my suggestion is to leave the hanger by the downpipe OEM if you don't have an upgraded rear motor mount, if you have an upgraded rear motor mount then by all means replace it. Then all you will need is the last 2 hangers back by the muffler section. As stated before the mid OEM hanger / hanger mount is no longer used with the Thermal R&D system.
links to the products mentioned
POWERFLEX hangers
https://whoosh-motorsports.myshopify.com/collections/s550-mustang/products/powerflex-exhaust-mount-hanger
Thermal R&D exhaust
https://whoosh-motorsports.myshopify.com/collections/s550-mustang/products/thermal-r-d-3-fiesta-st-cat-back-exhaust-2014






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