Bringing them back from DISC - Verus rear diffuser

[ron@whoosh]

We have an opportunity to bring back the Verus rear diffuser for the Fiesta ST
This time around the fins will be shaped a little differently
Please post up with interest in bringing back this high quality yet functional aero piece for the Fiesta ST!

 

[ron@whoosh]

revised fin shape would resemble these - a more simple rounded shape

 

[M-Sport fan]

I like it without the 'spikes' sticking way out past the bumper.

I could even sell my No Pistons EVAP guard with this installed, but I would have to remove this every single time I wanted to swap out my multiple exhaust tips for my CP-E system.

 

[ron@whoosh]

The diffuser adds low pressure to the bottom side of the rear of the car and helps fill in the void behind the car, this decreases drag and lift

 

[ron@whoosh]

tons of interest on this so we're moving forward with producing them again with Verus

https://whoosh-motorsports.myshopif...engineering-rear-diffuser-fiesta-st-2014-2018

 

[Jabbit]

How does it mount? Riv-nuts or what?

 

[ron@whoosh]

How does it mount? Riv-nuts or what?

click on link - info and installation is available

 

[esp_martin]

We have an opportunity to bring back the Verus rear diffuser for the Fiesta ST
This time around the fins will be shaped a little differently
Please post up with interest in bringing back this high quality yet functional aero piece for the Fiesta ST!

Ron, is there any chance Whoosh could look into Verus bringing back the Fiesta ST rear diffuser for another run?

 

[ron@whoosh]

Ron, is there any chance Whoosh could look into Verus bringing back the Fiesta ST rear diffuser for another run?

We tried, 50pcs minimum to make the run - it took over 3 years to sell off the first batch of 50
lots of interest until it was time to pay, then it's a ghost town...lol

 

[esp_martin]

We tried, 50pcs minimum to make the run - it took over 3 years to sell off the first batch of 50
lots of interest until it was time to pay, then it's a ghost town...lol

as always, appreciate the community support. I know how it goes. I would've been one of those 50 but I'm sure there wouldn't be enough support to get to that magic number. especially when it might cost even more these days with inflation the way it is.

damn shame though. the way the FiST bumper's designed it actually needs that diffuser.

 

[Woods247]

Just open the honeycomb trim section of the rear bumper cover. It gave me higher top speeds. I added the diffuser after opening the rear bumper and saw no gains. In short, it didn’t do anything to improve high speed performance. It might help with fuel economy but opening the rear bumper trim would likely help with that as well and it’s free. I read all the posted reviews of the Verus diffuser and only one other member had the same opinion I have. For track and top speed it’s useless without a flat floor and something additional that cleans up the air over the beam before it slides into the diffuser. The beam completely disrupts the airflow before the diffuser’s leading edge. That’s my theory anyway.. CAD vs reality.. Verus makes nice aero for other platforms but I’m unaware of real-world testing on the FiST like they do on the A90 Supra for instance. Be glad they won’t make them.. You’d be better off buying an appearance kit from Ron and putting the extra cash towards a LSD, short shifter or slightly larger turbo. Function before fashion 😂

 

[BadShot]

Just open the honeycomb trim section of the rear bumper cover. It gave me higher top speeds. I added the diffuser after opening the rear bumper and saw no gains. In short, it didn’t do anything to improve high speed performance. It might help with fuel economy but opening the rear bumper trim would likely help with that as well and it’s free. I read all the posted reviews of the Verus diffuser and only one other member had the same opinion I have. For track and top speed it’s useless without a flat floor and something additional that cleans up the air over the beam before it slides into the diffuser. The beam completely disrupts the airflow before the diffuser’s leading edge. That’s my theory anyway.. CAD vs reality.. Verus makes nice aero for other platforms but I’m unaware of real-world testing on the FiST like they do on the A90 Supra for instance. Be glad they won’t make them.. You’d be better off buying an appearance kit from Ron and putting the extra cash towards a LSD, short shifter or slightly larger turbo. Function before fashion 😂

Happen to have pics or MAYBE a write up on opening the rear panel? I'd like to do this to mine.```

 

[Woods247]

Happen to have pics or MAYBE a write up on opening the rear panel? I'd like to do this to mine.```

I don’t but it’s super easy. Just remove the rear bumper cover and use a flapper to sand off the plastic from the back until the honeycomb is open. There’s pics in my build page. It’s way easier than the grill.

 

[Downsy]

I don’t but it’s super easy. Just remove the rear bumper cover and use a flapper to sand off the plastic from the back until the honeycomb is open. There’s pics in my build page. It’s way easier than the grill. View attachment 65205

Time to fire up the flapper disc over here. That looks good. Did you see any cooling system advantage to doing the front the same way?

 

[Woods247]

Time to fire up the flapper disc over here. That looks good. Did you see any cooling system advantage to doing the front the same way?

No but the Mishimoto radiator and thermostat solves it all. I opened the front for my DHM IC.

 

[Downsy]

No but the Mishimoto radiator and thermostat solves it all. I opened the front for my DHM IC.

Cool. I may do both ends then. The Mishimoto radiator is on the short list of items for this year. I live in the DFW area and we hit 100+ here during summer time with high humidity. I need to be able to keep the kids cool in the back during rush hour traffic without the car exploding.

 

[Volumetrik]

If you open up the front grill area, you will increase drag. Better cooling, at a cost. There is a reason why newer cars have almost all the grill area blocked out.

 

[BadShot]

Just open the honeycomb trim section of the rear bumper cover. It gave me higher top speeds. I added the diffuser after opening the rear bumper and saw no gains. In short, it didn’t do anything to improve high speed performance. It might help with fuel economy but opening the rear bumper trim would likely help with that as well and it’s free. I read all the posted reviews of the Verus diffuser and only one other member had the same opinion I have. For track and top speed it’s useless without a flat floor and something additional that cleans up the air over the beam before it slides into the diffuser. The beam completely disrupts the airflow before the diffuser’s leading edge. That’s my theory anyway.. CAD vs reality.. Verus makes nice aero for other platforms but I’m unaware of real-world testing on the FiST like they do on the A90 Supra for instance. Be glad they won’t make them.. You’d be better off buying an appearance kit from Ron and putting the extra cash towards a LSD, short shifter or slightly larger turbo. Function before fashion 😂

Boy I hate working with plastic, but she’s done and if nothing else it looks really cool. Thanks for the tip.

 

[WolfDampf]

Boy I hate working with plastic, but she’s done and if nothing else it looks really cool. Thanks for the tip.
View attachment 65759 View attachment 65760

Does this really help much? Looks super cool and I'm wanting to do it soon! @Woods247 said higher top speeds. Could you explain more if it's effectiveness?

 

[BadShot]

I have zero data to prove anything about it, but it looks pretty cool and I was already taking the fascia off.