A big Mountune custard upgrade gets installed!
I have got my hands on a Mountune cat back exhaust V3 for my MK3 Ford Focus RS! These are often sold out on the Mountune store but I got in there well in advance of planning to install so now I get to complete the install and see how much of an improvement over stock it is!
There are multiple reasons for getting the Mountune V3 Focus RS exhaust including aesthetics with the larger and shinier exhaust tips with laser etched Mountune logo, for a sound upgrade having larger bore pipe work and a specially designed back box design, the sound is tuned for the character of the RS as well as for increased volume and as far as performance goes, it is lighter than stock and removes restriction found in the standard RS exhaust system in terms of the larger bore tubing and the removal of the flat 'pancake' section that exists in the stock setup. This should mean that pickup will feel faster and more eager - something that I will test after the install!
I show the full installation process including removal of the stock Focus RS exhaust which requires cutting it and then removal of exhaust hangers, etc. before then showing how the new Mountune V3 exhaust is installed piece by piece which includes both v-band clamps / connections and more regular type clamps with double slip joints for the different exhaust sections.
I round off this video with some sound comparisons. There is a very scientific (kind of but perhaps not entirely accurate but should give a good indication!) comparison of cold start between stock and V3 RS exhausts with a decibel meter and then a comparison / showcase of some revs!
I also retain the exhaust valve delete from my standard MK3 Ford Focus RS exhaust setup as I have enjoyed having it so I want to see what it is like in comparison when installed in conjunction with the Mountune V3 exhaust!
Valve delete keeps the valve open permanently so the exhaust will be on full loudness always and also will stop the error code caused by the valve sticking ever showing!
Mountune V3 RS exhaust features:
- 3" stainless steel tubing
- 4.5" laser-etched polished tailpipes
- includes new exhaust valve (motor assembly will need to be swapped from OE exhaust and is shown for illustration)
- v-band / double-slip joints throughout
- high-flow rear silencer design
- 10% lighter than OE system
- supplied with all required clamps and hardware
- compatible with OE downpipe / catalyst and Mountune sports cat
Mountune say about the V3:
The Mountune V3 cat back exhaust for the MK3 Focus RS is the result of countless hours of engineering and ongoing product development, offering a product that is simply unrivalled in terms of performance, sound and features. Extensive effort was placed on producing a sound profile that replicated the personality of the rs, with an aggressive note under full throttle, while maintaining a drone-free experience during cruising and light throttle. Produced from 304 series, 3” mandrel bent stainless steel tubing, the Mountune V3 cat back exhaust also includes many features used in motorsport applications; each tube joint is connected by either v-band or custom double slip-joint, ensuring the best seal possible while maintaining adjustability and lightness. Large 4.5” laser-etched polished tailpipes join the rest of the system via v-band to allow even easier trim adjustment and future system customisation.
The Mountune V3 exhaust:
www.mountunestore.com/collect...
Exhaust valve delete plug:
mk3focusrs.club/product/exhau...
Exhaust valve delete install:
• EXHAUST VALVE DELETE I...
Also, as the exhaust is next to the ground, it will be subjected to weather elements as well as dust, dirt, stones so in order to protect the finish, I ceramic coat using Gtechniq C5 Wheel Armour. This is top quality ceramic coating provides a high level of hardness & durability while also being heat resistant providing protection for 2 years!
I explain and show the ceramic coating process of the exhaust tips, which I complete ahead of installing the Mountune exhaust!
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