Magnuson Supercharger – 5th Gen 4Runner

 In 4Runner, 4Runner Mods, 5th Gen 4Runner Mods, Off-Road Accessories, T4R Accessories

5th Generation 4Runner Magnuson Supercharger

5th Generation 4Runner Magnuson Supercharger

5th Generation Toyota 4Runner Magnuson Supercharger – No more TRD Supercharger

We recently wrote some verbiage on the 4Runner Supercharger. This page included some information about talks on the TRD Supercharger and the Magnuson Supercharger. We also covered the status and what the details were on the supercharger for the 5th Gen 4Runner. Many things have changed since we wrote the post and now we are strictly talking about the Magnuson Supercharger for the 5th Gen 4Runner.

The Magnuson Supercharger is hands-down, the best mod for 4Runner performance you can get. Boasting about 30% of performance gains, this is literally 10 times better than any gains you will see from a Catback Exhaust, a Cold Air Intake, Headers or a Chip. Headers for your 4Runner might come close coming in at about 20hp but you will never experience the 4Runner’s true potential without the Magnuson Supercharger.

As we all know, our 4Runner is not fast. But, with the help of the Magnuson Supercharger, you will absolutely feel a difference and thoroughly enjoy slamming the pedal on the freeway. We have covered a few performance mods for the 4Runner in the blog, but nothing like the supercharger. Let’s jump into the Magnuson Supercharger and see what this beast is all about.

Magnuson Supercharger Performance Ships Ready to Perform

Magnuson Supercharger - 5th Gen 4Runner

The supercharger ships tuned and ready to install out of the box as a complete bolt-on system. The Magnuson Supercharger comes with a plug-in component, like a tuner that tells your 4Runner computer what is being changed.

With the addition of a supercharger, your 4Runners fuel injection ratio and air compression will change. The computer needs to account for all of this so your engine won’t throw check engine lights or just shut off randomly.

If you are looking for performance increase, look no further. This is the mod you want if you are looking for a 4Runner with power. We took a trip down to Ventura, Ca to visit with Magnuson Superchargers to get all of the questions answered.

We may be missing a few here and there but hopefully, we covered the Supercharger in-depth enough for most 5th Gen 4Runner owner out there.

So, what is a supercharger?

4Runner Supercharger - Magnuson 4Runner Supercharger

What is a supercharger (SC)? A supercharger compresses more air into the cylinders of your 4Runner. By compressing more air, the engine allows for more air and more fuel into the cylinders resulting in more power during combustion.

Magnuson History? Where did it all begin? Just Superchargers?

Located in Ventura, CA, Magnuson Superchargers started when Jerry Magnuson built a Supercharger for his Harley. After Jerry Magnuson built this kit, he started producing this kit for others. Soon after, Jerry Magnuson branched out and started building supercharger kits for cars, trucks, and SUVs. Jerry Magnuson sold the business to the current CEO who runs the company to this day. Today, Magnuson builds and offers Superchargers for a wide variety of automotive applications.

Why did Magnuson wait so long to Release Supercharger?

Work actually began on the 5th Gen 4Runner Supercharger back in 2009. Magnuson and TRD (Toyota Racing Development) were working on the kit together and it was intended to be released as a TRD Supercharger. Eventually, TRD shut the supercharger program down in 2012 and Magnuson was left with a beautiful product that would never be released as a TRD Supercharger. Instead, Magnuson continued R&D on the 5th Gen 4Runner Supercharger and it will be released on December 1st, 2017.

Official Numbers from Stock to Supercharged?

It is important to keep in mind that every dyno test will be different. To answer the question; 330hp at the wheels. Tested and tuned for a bone stock 4Runner, the Magnuson Supercharger will reach 330hp – 336hp at the wheels. One of the biggest factors in exact horsepower numbers will be the size of your tires.

If you are running 34″ tires, you will see less horsepower as opposed to the stock 31″ tires that come on your 5th Gen 4Runner. With running 33″ tires or 34″ tires, you are going to be down anywhere from 10-15hp.

HP Numbers at the Wheels Vs. the Crank

So we mentioned a 30% increase in power. Let’s get into more detail on what this actually breaks down to. It is actually more like 80-100.

The 5th gen is 270hp at the crank, Magnuson tested theirs at 250hp at the wheels (probably generous as drivetrain loss is normally 15-25%). The Magnuson SC tested 336hp (But, expect to see 330 on yours) at the wheels, 86rwhp (Rear Wheel Horse Power) increase from pre-install values.

336rwhp would be more like 386hp at the crank (vs 270hp listed stock). Basically, at the wheels, you are looking at 250hp stock compared to 336hp supercharged. At the crank (estimated) 270hp stock to 370-390hp supercharged (if you multiply 336 by 1.15 to account for drivetrain loss).

We stayed conservative with the latter given the high RWHP pretest by Magnuson. 

Adding a Catback Exhaust, Intake, and Headers?

If you are throwing a Catback Exhaust, Intake or Headers, you will absolutely increase your power. But, it is important to note that if you are throwing on additional performance parts, you will void your Magnuson Supercharger warranty.

So, adding an Intake, Headers, and an Exhaust is up to you but if something goes wrong with your Supercharger, Engine, Fuel Injectors, or anything else, you are on your own. But, with this being said, you should be fine to add a catback, intake and headers if you want as the Magnuson Supercharger is an incredibly well-built product.

Exact PSI Injection into Cylinders?

The Magnuson Supercharger is running 6psi of boost, however, this will change depending on your altitude. If you are in Colorado where the air is thinner you can expect to see 4-5psi. In any case, this is quite a bit of difference coming from a stock 4Runner set-up.

Affects the SC would have on Engine for Long Term?

As long as you are driving your 4Runner like a normal person, you will have no adverse effects on your 4Runner engine. If however, you are running a catback exhaust, an intake, headers, and a straight pipe/ mid pipe section, then it’s hard telling not knowing. Again, this supercharger has been tested with all stock 4Runner parts and has not been tested with any aftermarket parts. If you are throwing something on your 4Runner to jump from 330hp to 400hp, enter at your own risk.

The 4Runner engine was not built to hit 400hp, but the Magnuson blower can probably handle anything you throw at it. In my opinion and after talking with Magnuson, you are probably safe to run a catback exhasut, an intake and maybe headers. Anything else is just silly. With that being said, even headers are pushing it.

How long does the Install Take?

About 10-14 hours. To install a Magnuson Supercharger on your 5th Gen 4Runner, you will need to be somewhat mechanically handy. If you have installed an intake, exhaust or other 4Runner mods, you should be fine. You just need the right tools and some experience in taking things apart.

If you have the Magnuson Supercharger installed by an ASE (Automotive Service Excellence) certified mechanic, you will get a 3 year / 36,000-mile warranty. And, you can opt for an additional warranty for another $500 and that is a 5 year / 60,000.

Complete Bolt on System?

The Magnuson Supercharger is a complete bolt-on system. There is no welding needed. Again, if you are somewhat handy, you will be able to drop this supercharger on your 4Runner in a day. If you want to go from 270hp to 330hp overnight, then buy a supercharger.

Problems with fitting mods like a winch?

The only problem you may run into is your aftermarket front bumper and winch. The Magnuson Supercharger has an electric intercooler pump for independent cooling of the supercharger. This pump sits in front of the Magnuson intercooler screen.

This intercooler pump is mounted directly in front of the radiator but you can move this around and mount it wherever you need to as long as you keep it low. The intercooler pump is designed to be mounted just in front of your first radiator but you can move it to the far passenger side or far driver side. Also, you can mount the intercooler pump horizontally and vertically to fit your specific application.

Are the MGPS Increased, how much?

You can expect to see the same mpg on the freeway but about 1-2 reduced in the city. Also, you can guess what happens if you love to dump the pedal because you love the sound. You might be burning through quite a bit of premium fuel with the Magnuson Supercharger installed. But, if you can afford the price tag, you can afford to burn through some fuel and drive your 4Runner the way it is supposed to be driven with a supercharger, hard and fast.

Running Premium Fuel Only?

You will need to run premium fuel in your 4Runner if you install the Magnuson Supercharger. This will add to the overall cost of your 4Runnner in the long term but premium fuel is much better for your engine overall. This is not really a problem for us, though. I personally have been running premium fuel in the 4Runner since I installed the TRD Intake and the MagnaFlow Catback Exhaust. Not that it was needed, but running premium fuel is obviously just better on your 4Runner.

What’s the Warranty?

All Magnuson superchargers come with a 3 year / 36,000-mile warranty if you have it installed by a dealer or an ASE certified technician. There is also an optional $500 5 year / 60,000-mile warranty available for purchase. As long as you keep everything stock on your 4Runner, your warranty will cover replacement of your engine and a new supercharger.

How Much and is it worth the cost?

$5695.00. If you are making the jump to a Magnuson Supercharger it will set you back quite a few dollars. Making the decision to add a $5695 is a big choice so you better be sure you want the extra power.

Best Point of Contact for the 4Runner Supercharger?

If you are looking to purchase the Magnuson Supercharger, the best way to do so is by calling Magunson sales directly. At the moment, the Magnuson Supercharger is not readily available on Amazon or any other eCommerce marketplace. You can also call Magnuson Authorized Dealers. You can find approved Magnuson Supercharger Authorized Dealers on their website.

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Showing 14 comments
  • Anthony

    I wonder if you can just use the TRD filter with the Magnuson cai that it comes with and be fine? 🤔

    • Brenan - Trail4R

      Yeah, the TRD filter in the stock airbox is ok. We talked about that a little bit. But, even with the TRD air filter in the stock box, there was no real difference in HP gains. So, Magnuson continued testing/ tuning the supercharger with the stock filter and stock airbox.

      • Anthony

        Cool… gotta persuade the wife on buying my own Christmas gift lol 😂

  • William

    I saw the SC in a video and it is fast! I can’t believe the car accelerating is a 4runner.

    The price is quite a bit more than the old factory SC from TRD. Seems like it will run at least $7k after installation. If you car is still under factory warranty, I would definitely get this installed at the dealership so it doesn’t void any warranty you have.

    • Brenan - Trail4R

      Yeah, it moves pretty quick for a 4Runner. It would also be interesting to see what the dealer would charge to install this. Let us know if you hear anything on cost from the dealer for an install. You can save a pretty penny if you install it yourself but it is quite involved.


    Is Magnuson SC CARB approved?

    • Brenan - Trail4R

      Good question. That should have been noted for sure. I will update the post. Yes, the Magnuson Supercharger Kit carries a CARB EO# and is 50-state emission legal for on-road use. CARB certification (D-488-40)

      • ERIN HELM

        Hello all!
        Just wanted to clarify that this kit is NOT yet CARB approved. Our Magnuson 4Runner will be going in for testing shortly and once approved, we will be able to sell into California.

        D-488-40 applies for the following applications:
        01-90-40-011-BL 2003 – 2009 4RUNNER
        01-90-40-007-BL 2005 – 2015 TACOMA
        01-90-40-009-BL 2007 – 2009 FJ CRUISER

        • Brenan - Trail4R

          Good to know. Those numbers came from one of your vendor pages who is selling the SC (Vivid Racing). Thanks for keeping us in the loop.

  • Pavel

    How much torque does it add? Can you share the hp and torque numbers at different RPMS?
    Also, can you still run on E87 or must only use E91?

    • Brenan - Trail4R

      Hey there, you are looking at a 30-34% horsepower gain and a 27% torque gain. 91oct or better is the only fuel you can use with it. Do not even think about polluting it with 87oct (tuning reasons).

  • Bob

    It is definitely worth it. Like “you gotta be kidding me” torque and acceleration. I do have a concern with the 91 or better gas. I am in rural areas with my rig all of the time and its just not possible to keep 91 or better in the tank or accessory cans. Is it really going to mess up the engine if I ran a tank of 85 or 87 through the supercharger a few times a year, in a pinch? That is the only deal breaker on this for me. I test drove a 2016 with one and I just was blown away. Octane boost bottles are snake oil, so is there any other solve for the octane mandate?

    • Brenan - Trail4R

      Yeah, the Supercharger is a beast for sure! It was a blast to drive. I would NEVER run 87 through the Supercharger. The Supercharger was tested and tuned with 91 so running even 1 gallon of 87 through the supercharger may void your warranty, and cause more problems than it’s worth. I personally would not recommend it.
      Good luck Bob!

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