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The Moditorium

A high performance automotive resource for parts, how-to's, projects, buyer's guides, technical, events, and more.

Our Favorite Parts at Every Price for your Focus ST. Our Favorite Parts at Every Price for your Focus ST.

Ford Focus ST / Garrett Powermax / Car Parts / Aftermarket

Our Favorite Parts at Every Price for your Focus ST.

By: Edge Autosport / December 19th, 2022

My Budget is X Dollars, What Should I Get? Not everyone has the same budget when it comes to modifying their car, but everyone loves a shiny new part. That’s why we made a list of our favorite mods and parts at every major price point. No matter what you spend, you know you are getting something good. Save up and scroll down to see what we recommend.

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Aftermarket LSD When I Upgrade My Focus ST Clutch? Aftermarket LSD When I Upgrade My Focus ST Clutch?

Ford Focus ST / Performance Parts / Car Parts / Aftermarket

Aftermarket LSD When I Upgrade My Focus ST Clutch?

By: Edge Autosport / December 5th, 2022

When it comes time to replace the clutch on your Focus ST, an opportunity arises to kill a few birds with one dropped transmission. Not everyone NEEDS an upgraded LSD, but will an upgraded differential give your car the potential to handle better? Yes. The internet loves to argue about understeer and necessity when thinking about upgrading the diff, but the fact is: better differential = better grip, and grip is good (if you know how to use it).

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Best First Mods for the Ford Focus ST

Ford Focus ST / upgrades / Car Parts / Aftermarket

Best First Mods for the Ford Focus ST

By: Edge Autosport / November 11th, 2022

  What are the best first mods for my Focus ST? Our favorite first three mods for the Focus ST are Access Port, Intercooler, and Rear Engine Mount. Engine management is key at every step of the build, cooling your compressed air will make more power and keep the engine safe, and securing your motor will allow you to put that power down on the road.

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Which Lowering Springs are Best for Your Focus ST?

Ford Focus ST / Focus ST / Video / Suspension / lowering springs / Comparison

Which Lowering Springs are Best for Your Focus ST?

By: Edge Autosport / September 24th, 2022

Suspension mods can be as simple or as complicated as you make it, and there are plenty of top notch companies taking R&D to the next level so you don't have to get into the weeds with spring/dampening rates. Yes, numbers are important, but unless you are designing full custom setups for your national circuit race car, why not let the engineers handle the heavy lifting? We took four sets of the most popular lowering springs and installed each of them on our 2016 Ford Focus ST to find out exactly what all that hard work and engineering does on the streets. Check out the video below to see what we discovered:

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Xtreme DI Fueling for Focus ST - Part 1

Parts / Ford Focus ST / New Part Releases / research / Project Car / Fuel Mods / Video

Xtreme DI Fueling for Focus ST - Part 1

By: JP Alonso / February 25th, 2022

To say we're happy to have XDI around is an understatement. Before XDI, the Focus ST and many of it's other GDI fueled counterparts were limited to the factory fuel systems. Granted, many GDI systems are capable of fairly large flow increases unlike some other port fuel injected vehicles where you have to replace injectors and/or pumps almost immediately if you start modifying. But we all know mild power increases aren't going to cut it for many of us.

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Extending the Limits of Your Stock Focus ST Turbocharger

Tech / Ford Focus ST

Extending the Limits of Your Stock Focus ST Turbocharger

By: Alan Jackson / September 23rd, 2019

Recently, I’ve had the privilege of tuning three similarly modified Focus ST’s, pretty much one right after the other, with the only real difference between them being the wastegate actuator. All three had the basic bolt-ons, though brands did vary. This alignment of the planets allowed me to get some pretty close back to back data to use in comparison of the different options for modifying the factory wastegate on the Focus ST. Car number one came in with the actuator untouched and unmodified. Car number two came in with the factory wastegate preloaded a little more than stock. Car number three came in with a Turbosmart wastegate actuator installed in place of the stock actuator. When tuning the Focus ST on the stock turbo, you are pretty much just maximizing what the wastegate can do. WGDC (wastegate duty cycle) is going to hit 100%, meaning it's working as hard as it can to keep the wastegate shut, around 4000rpm and hold there to get as much boost as the turbo can give. This may sound harsh, but that's how it works on the Focus ST. Boost pressure on the small stock turbo falls off hard towards redline dropping as low as 10psi (keep in mind I am doing this testing at over 5000ft asl).

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