Magnuson Supercharger Upgrades and Limitations

So if I ever went with forced induction I would only really consider Magnusons supercharger setup, I like everything about it, especially how clean it looks under the hood and it makes pretty decent power.
So I'm curious if anyone with experience on magnusons superchargers, does it seem possible to pull more power out of that setup? Or is that about as good as its gonna get for now?
Has anyone changed pistons in the 2GR-FKS or any fuel system upgrades needed to go further with Mag S/C, or is tuning the place where it's held back?
Curious to see what plans current or future Magnuson guys have for their supercharger setup!
I'm pushing over 170k in my 16 so by the time I get to putting a Magnuson setup on my tacoma I will be well over 200k and will probably require a rebuild by that time so curious if changing some internals would help out the S/C to be able to build more reliable power.

 

You may not need a rebuild at all, but what you SHOULD do with the sort of mileage that you have is check a few things first.

- compression test, both static and dynamic, that means cranking and running and see where your numbers are at.

- cylinder leakage test, nothing over 25%

Do both of those things and get favorable results for both, and you are good to boost! To be clear, both of these tests will test cylinder head gasket, piston ring, and valve sealing integrity.

There are plenty of ways to get more power out of the Magnuson TVS, however, you may want to allow your blower to breathe better first... That means open up the intake and exhaust the most you possibly can with legal constraints according to your state. (I.e emissions regulations according to state) Once your boost level drops, then you can replace your supercharger pulley to a smaller one to get you back into proper levels.

This is where supporting mods will come into play. You can't always just a slap a smaller pulley on it and call it good. You may need to replace things like the fuel pump, injectors, higher heat range plugs etc. and then you may need to tune for it. Tuning gets you the most power out of the modded setup when done correctly.

That TVS and every other supercharger has a compressor map, so refer to it and get educated on knowing what the blower efficiency is. Do everything you possibly can to stay within that boost range and you'll make the most power out of it.

 

What kind of injectors are on the market for the 3rd gen? Ive searched for months and I have yet to find some.

 

No idea. That is something the 3rd gen crowd will have to determine on their own, but from what I remember the direct injection injectors may be far from topped out, which is good for you guys if so.

 

Thanks man for all of the tips, much appreciated! Oh I absolutely have everything that I need to learn when it comes to S/C and boost. So I got a lot to learn before I even consider bolting anything on. But I do build everything myself in my shop, so compression test and such are no problem, and I plan on doing one when I change my plugs here soon just out of curiosity. I do have a nasty timing chain cover leak and do plan on pulling the motor when it's time to reseal so I plan to have the S/C ready to go sitting in my shop at that point but I want to do it all at one point as far as major upgrades like clutch and any internals if needed. But every upgrade will be built around a S/C 2GR-FKS with stock 6 speed M/T and Marlins Dual Case setup. So it's great that I live in Tennessee because of 0 emissions testing, glad I'm not in Cali anymore.
So when you talk about exhaust flow and opening it up, I definitely have plans for that I'd like to get done before any of these major upgrades happen.
I would definitely like a set of catless dump tubes to start if I can keep the cel light off, and then probably go all stainless and I need a re-route because I crushed the stock one pretty bad. So I may go all custom if I can't find what I want.
But I'm definitely not against upgrading fuel pump and injectors, it probably will be needed, I think ovtune said anything past 9psi of boost is where the fueling upgrades come into play. And since I will have the motor out and if lower compression pistons will help then I will absolutely be doing upgrades like that. So nothing is off the table, just trying to learn as much as I can about superchargers and boost and tuning, because I have no experience. I've only built N/A engine's and such.

 

So far the only people to upgrade the injectors and fuel pumps is ovtune with their twin turbo setup I believe. They are using injectors from the Lexus 2gr setup I believe. It's all discussed in the twin turbo forum what injectors exactly and fuel pumps and such. It was on ovtunes website but I just tried to find it again but it's not their. So have to search that thread and find it again.

 

Ahh. I understand now.

Yeah boost is a totally different ball game, it would be best to determine what the minimum/ maximum boost allowed before you are just turning the blower into a furnace on top of the engine is. That should be your first order of business, from there you can build the blower accordingly to those respective boost level ranges.

There really is no way of knowing what sort of boost you will have unless you play with pulley sizes. You will not know what sort of boost that is until the engine is running and if you are going to mod immediately the chances are pretty good that you will be below what is even OE boost levels because you will be flowing so well, so you may have to replace the pulley immediately after initial testing. Be prepared and have 1 or 2 pulley sizes down available. Cat removal on both banks is usually worth 1.5- 3 psi. That is good for a total of two cats. Removal of four will drop things even further.

Just as a heads up, boost is not indicative of power levels. It is indicative of restriction. So 6 psi on an otherwise OE motor is not going to make the same power as 6 psi on a highly modified well flowing engine.

 

Oh yeah this is a brand new area for me. This 3rd gen tacoma is just underpowered and man magnusons kit just make this truck so much more fun and drivable without risking much.

So honestly it might be a better route to get the supercharger installed and running on stock form then go to town on the exhaust and intake and readjust from there and go down the line to see what might be improved to make more power. Because just by removing all 4 cats and opening up the exhaust changes so much.
Is it strange that Magnuson doesn't include or suggest a boost gauge to install with this kit? Also they don't even mention how much boost this kit is providing, seems strange.
Also looks like your running a 4.0l with a Magnuson S/C right?

 

I am running their supercharger, but the TRD version of it.

I always did find it strange that they would not include a boost gauge with it, but then again they design their stuff in such a way that is intended never to be modified.

I believe their boost for the 3rd gen was supposed to be 6.5 or 7 psi. I can't remember exactly so don't quote me on it.

The trucks are severely underpowered from the factory for sure, both in the 2nd and 3rd gen renditions but it is what it is. The key here is to run it as is, see where you are at then make your modifications as needed and build up in increments because then you can make adjustments easier as needed to support the new power levels. If you guys have a way of getting tuned properly then that is everything because modifications need tuning to compensate for the increase of airflow or additional fueling.

Get a boost gauge, get an air fuel gauge. Two of the most important pieces of information that you will ever have present while boosting.

 

Yeah I got a chance to read through your build thread last night and looks good man, really nice tacoma. That trd charger is awesome. Will never understand why toyota canceled their S/C program. But man your tacoma is making really good power with that setup. How many miles have you put on it, and any rebuilding with mileage necessary?
Yeah you'd just think that you would want to keep an eye on that boost gauge, I know I would. But they build such a solid factory unit that you don't need to modify, like you said.
Yeah toyotas have been underpowered since the fj40s in the beginning lol. 370hp would just absolutely wake this truck up, but it would be nice to be around the 400 and up area, but not loose reliability. And I definitely agree with you, going to shoot for ordering in the next month or so and just adjust and build around it.
But definitely need to make sure she's healthy enough to support some boost first and foremost.
And we have vf tuner capabilities for our trucks which is what Magnuson used to tune these kits I think, and from what I understand gives us full capability to tune ourselves if we go customs. That's gonna be the hardest part learning what and how to tune correctly. But would be a great skill to learn anyways. Thanks for all the input bud.

 

Ah right. You guys have OVTune VFtuner, so that's good. Remember horsepower isn't everything and power to weight ratio is, so as long as you keep the weight relatively down you can potentially have a rocket, even at 5000 lbs. I was watching a video on a supercharged 2015 Tundra and in its otherwise OE form it didn't appear to seem much, if any faster than mine on camera.

I've put over 80K on the blower easily. Maybe even 90K at this point. I have been overactive on maintenance so I have done a front end blower rebuild already because I wanted to be proactive about making things were in good standing and operable prior to them failing or starting to make weird noises. I don't know why Toyota cancelled the blower program but at least Magnuson continued offering it after they cancelled it.

Thanks by the way! I'm very happy with it and it sounds killer with the current setup as is. My current favorite mod is the exhaust. I have yet to redyno it after doing some of the recent changes I did, but I'd be willing to bank that I'm making somewhere around 320-330 HP now to the wheels. I may actually redyno it sometime really soon. I have some power adders still left off the table, but the way I see it right now, it's less maintenance to keep that power off the table vs. putting it on and having to worry about maintaining and keeping the mod topped off so I'll call it good where it is.

 

Good thread - any words of wisdom - getting ready to order Magnuson SC. Thanks!

 

How'd it go?

 

I just did a 950 mile trip down to the Oregon dunes pulling our 4k lb trailer (loaded), a generator, fuel and drinking water (probably an additional 500lbs more than I normally tow with). Truck had no issues pulling the extra weight and was a blast out on the dunes with the extra power. I think the biggest gripe with the kit is the stock like shifting. With KDMAXX and so many other tuners figuring out a better shifting matrix and Magnuson not spending time to dial in that part of the tune does leave some things to be desired. I've got 2500 miles on my kit so far and I installed it at the shop I work at in under 10 hours. I have no regrets. I average mid 16's for fuel economy daily driving and averaged 10.8 for the entire trip to the dunes including towing (800 miles), running back and forth into town and playing out in the sand (150 miles).

 

Has anybody else noticed that with the fact is it’s limited to 92 mph hour

 

WTF?!?! The tune is limited to 92mph?

 

Is there really any reason to drive a non-aerodynamic poorly handling box faster than 92mph? In 4200 miles since I put my s/c on I haven't hit the limiter yet.

 

Are you regeared?

 

Lol, right? If I hit 92 in my taco I'd get liftoff.

 

Well I was in Dumont with a lot of open Desert roads and I had to get home in a hurry