Magnuson Supercharger Mega Thread for 16+ Tacoma - Unboxing, Install DIY, Dyno Video

Can't speak to the tire size or gearing, mine is stock sport, and pretty light weight most of the time (except towing). SC for 15k mi so far, and no issues or concerns, makes the truck a pleasure to drive, where before SC it constantly shifted, and was a nightmare towing anything faster than about 55 mph. It seems, by listening and watching the gauges, that the tune is solid and safe, maybe even a bit extra safe (in my opinion) , but that is the margin for adding durability, and I am grateful for the margin when I am towing a load.

Understand that adding power, increases wear and reduces the factory 'overbuild' margins, so you are certainly asking more of your engine internals and drive-line, and though there has not been any negative feedback from those running the 87 pulley, that does add more power, so more stress. It is sort of contradicting that you emphasize reliability and see yourself going with the 87. If you want rock solid best reliability Toyota has to offer, then NO POWER ADDING!! From there, there is most certainly safe power adding, with gearing and simple exhaust; add considerable power with a SC and feedback indicates the truck is still Very Solid, even with small pulley; BUT you most certainly are headed toward limits, not-yet clearly defined; yet we know they are there.

That said, install a SC and enjoy, the risk is small, maintenance increase is small, likelihood of issues is small (does exist), and there is enough feedback that you should not worry too much. Fact of life that complicated machinery breaks, Adding power will expose flaws that might not ever show up if you do not add power; but there is enough feedback for the SC to indicate that ample safety margin remains, and the SC is not adding enough stress to commonly expose flaws. Of course going to the 87 pulley is another increase, but so far even this seems to be reliable, though there is less feedback and certainly increased risk; all indications are the risk is small.

Consider that the vast majority of vehicles that end up on a tow truck, are NOT Modified; so THE RISK IS REAL, but it exists even without modding. You are on the right track, ask questions, see what others experience, weigh the risk and benefits, eyes open and make your decision; and please include the smile factor in your decision, I was not enjoying the 3rd gen, ready to sell and try something else, then installed the SC and it is transformed; now capable and pleasant. I too am considering the 87.

 

great feedback and thank you very much for taking the time to write that up and the thoughtfulness. Very appreciated!

 

Any one care to post some “pulls” with their maggy, OTT tune and whatever else may be upgraded (87 pulley etc.)
The ones on YouTube are crap and make the maggy look like it ain’t worth it

 

Anyone change their Coupler yet? I know OpelGT did, but I'm not sure he's still around. I was trying to find out what the steps were and what was used to remove the coupler. SuperChargerparts online said I would need a bearing press for something, but I'm not 100% sure. I did purchase the rebuild kit and a new belt (might as well). thanks in advance!

 

For anyone using a boost gauge, can you tell me at what RPM boost comes on, at what RPM you reach peak, and how may PSI that actually is?

TIA

 

My truck is stored for the winter, so cannot check specifics. But boost is dependent on load, not directly on RPM. the bypass opens, preventing boost, when there is enough vacuum in in the intake, and a spring will close the bypass when vacuum drops.

The only thing I can pretty clearly remember is cruising at 75, it varies between 1 and 2 psi, and 55-60 up the mountain road, it varies from 0-2psi, with varying steepness and without shifting.

I am less certain, but think 6.5psi WOT, just not sure of this one. I also have 3in exhaust, which may impact boost level, 90 pulley.

I know this is not exactly what you are looking for, but hope it provides something useful.

 

I get 7 psi on my analog boost gauge at WOT.

 

90mm pulley?

 

Do you have the restrictor plug in your bypass valve?

 

Whatever stock is

 

I run the Maggie as well and I have the OTT tune on medium. I am curious how this gauge is installed? And what is the real benefit of knowing how much boost you are making ....does it matter really? Or is it just aesthetics and another shiny thing to look at?

 

Because i want to know. Along with trans temp and oil pressure.

 

This is pretty cool looking. Is this hard to install?

 

Its not stock looking but i think its as clean as you can get without putting it on the dash like meso prototype. Install wasnt bad.

 

yes, I read opinions, determined that all it does is buffer or slow the speed of the bypass opening and closing, and with some feedback from the tuner; decided to leave it in. I played with the bypass with a Mini Vac, and with restrictor. it is not what I consider sluggish.

 

boost, AFR, Trans Temp; if you like analyzing the info presented, it can indicate trouble that you might otherwise have difficulty noticing, but honestly I have boost and AFR, and am regularly curious, and look at them but believe with a well developed tune and running proper octane, you probably do not need the gauges. Heck, most AFR gauges are only monitoring the right bank too, so only half the story. The right bank is preferred on these, because it runs a bit lean; the injector at the end of the fuel rail piping sees less fuel pressure.

Adding a boost gauge, is painful, the threaded plug is on the back of the SC, tight against a thick wire bundle, real challenge I believe I used a 90deg elbow fitting, 1/8 pipe by 1/8 barb, straight would never have worked, and i doubt it can be added with the SC bolted in.

The AFR needs a bung welded into the exhaust, before the cat.

Then, as you see there is the wiring and mounting the gauges. I voided the warranty on my gauges, and with a dremmel and some hours a the bench, mounted my gauges like this, the gauge's are only about 1/2" thick, if you cut it out of the provided housing.

 

Are any of you monitoring IAT? Before the SC I was generally 8-12° above ambient, but after I'm 20-25° above. Today we hit 50° where I live and my IAT made it up to the low 80s. I confirmed my pump is working. Just wondering if this is normal? I can't imagine how warm the air charge will be this summer when it's 95° and 230% humidity.

 

Can anyone point me in the right direction of a reputable shop or person in SoCal to troubleshoot my boost issues? re-flashed with no luck, tuner thinks its mechanical. truck is loosing boost around 4k-5k rpm, sometimes boost will return after 5k rpm or it wont loose boost at all and just pull to redline, loosing boost doesn't always happen, but happens more than not.

 

Howdy, flashed over from the Maggy tune to OTT. All I can say is h-o-l-y smokes! What a difference. I came from an N/A OTT and put on the s/c and could tell it was quicker, but not by a lot and it was annoying to drive like stock. Flashed the OTT today and wow, it is just so quick, fun and the power is accessible.

Thank you @JustDSM for doing what you do!

 

What’s the air temp where you live currently?
Were your IAT’s 80’s after a full pull? The maggy is a PD blower, so the IAT’s will be a bit higher for sure compared to a centrifugal

My Mustang will be near ambient or maybe 10° higher, after a full pull I’m in the 90’s for sure
This is Hawaii weather, high 70s to mid 80’s, and it’s always humid af here. The mustang has an air to water cooler.