Magnuson supercharger install here at down east offroad

Idk. My brothers dad said he had a turboed geo metro that performed way better than his supercharged 2JZ.

 

I agree, asking seems like a great way to flag any modifications to them, and opens it up for them to "look deeper" than they otherwise would. I'd do this and see what the regs. say and go from there.


Also so glad I dont have to deal with that BS anymore where I live now. I did have to take the test on my old explorer when I lived in CO a few years back, that thing passed by like .01 what ever they measure, it was that close.

 

no it’s not, read my post again. Vehicle weight has fuck all to do with HP output. You may have corrected your post, but doesn’t change what you said and what I replied to. Stop with the semantics, you were wrong just admit it.

 

I admitted I was wrong, it's right there in the comment you quoted. Feel free to read it again since you requested I re-read yours. The bit I did not admit to being wrong about however is tire weight. That's where you're incorrect. I guarantee that a bigger tire is heavier with more rotational mass and has a direct impact on the resulting dyno numbers. If you do not believe me, that's fine, you don't have to.

 

You are 100% correct with this. The heavier rotational weight further from the axis at which makes it spin takes more power it takes to do so. You can see this on the Dyno with same height tires. It also greatly affects your braking as well. We've seen it on our drag cars with running different tire and wheel combos but same height.

 

I know he is on bigger tires. And of course all dynos vary depending on condition, vehicle, even from the user. But I purposely only cited numbers Magnuson has advertised on Tacoma dyno runs, and as stated the 3rd gen numbers posted are much worse then anything else I’ve seen them post. That’s why I’m hoping they post a stock truck configuration dyno numbers, cause right now I think I’m not the only one disappointed.

 

The compressor map will be critical in staying within the proper thermal efficiency range of the supercharger. It's very important you follow it when doing your build if you want to have a powerful rig. If you boost too far up without any supporting mods to help the engine breathe better it will take you outside of the efficiency range and you will just be boosting, but not creating usable power due to all the heat being generated by the supercharger.

That being said the MP90 has an efficiency range of around 6-7.5 psi (which as you can obviously tell that is a narrow window to be in when you are modding for more airflow). I'm not sure where it lands on the TVS heartbeat blowers as I have not studied them, and have no real reason to, but you will have to do your due diligence if you want to make the most out of the setup because there is a definite sweet spot. That means NOT just slapping pulleys on it and calling it good.

Moral of the story gents.. heat is the enemy. For superchargers and turbos alike. Proceed with knowledge when and if you intend to and are ready to mod.

 

The 15psi limit is due to the turbos being outside efficiency and creating excess heat. Same as any other FI option, further you push, the more heat.
Sure you could run 30psi, but the heat generated is dangerous.


But, may I ask if you guys could try to keep this about the Supercharger. I'm happy to respond to any questions on our thread.

 

I was gonna post a video agreeing with you but what I found was 2 different videos with conflicting results. The first was a Subaru with stock vs larger MT tires. It went from the difference was 130hp vs 121. I thought there may have been a bias from the larger tread as opposed to just size so I went looking for anoth video. This one is 31" to 35" and there was no difference.

I would expect there to be a larger difference in 1st gear vs 6th because of the greater change in speed.

Skip to 9:30
https://youtu.be/6F4YEb20_eg

 

when did I quote / mention tire weigh (well rotating mass) in your or my posts? nothing I said or was incorrect.
But the wheel weight you mention also needs a “disclaimer” as that’s also not correct depending on the dyno type. inertial type dyno’s like dynojet are absolutely effected by rotating mass, But brake dynos are not. And as I also stated I’m not watching any video from that fucking idiot tacomabeast, so I may have context wrong. Ie no idea on the dyno he used. But I sure hope he has a baseline from before and after SC install otherwise again kinda irrelevant.

 

I will do both, and I will post on the local thread and see who has information and or experience. Good point.

 

I'm about to watch but prior to doing so, I don't really have an answer for this other than to ask if they measured at the hub or the wheel? Hub measurements ignore tire size discrepancies.

The other thing I'd say is that this video defies physics then. A wheel horsepower measurement is a measurement of the power put to the ground at the wheels. With greater mass, you have a greater amount of power required to create the same result or action onto the ground than with lesser rotational mass. It's like if you push against something small versus something large. Rolling it forward. You have to work harder if it's bigger and heavier. That actually leads into how Force is calculated.

So if this video effectively demonstrates that you need the same amount of power to push a smaller tire as you do for a larger one in order to achieve the same result (the numerical representation of horsepower that we see), then unfortunately for Magnuson and everyone who has purchased a kit for the 3GT, or will in the future, the kit only has 275whp to offer and what did the vid this morning show? 230wtq I think? Something similar? Smh.

 

iirc, the beginning of the video showed a Mustang Dyno. To give benefit of the doubt where power is concerned, I have heard over the years that this type of dyno does tend to read a little lower than average. This type of dyno doesn't measure at the hub however, I've had a car of my own on one before.

If you measure at the hub, then tire size doesn't matter, because you're not measuring at the wheel.

The baseline they dyno'd at prior to installing the supercharger gave them 214whp, and the dude sitting in the driver seat said that stock Tacomas were getting about 225-230 or so iirc. Somewhere around there.

Post install with the SC had him up at 274.9whp and if I'm not mistaken, 230wtq.

 

Maybe but when could they have tested a boosted version to know what it will take before letting go?

 

They are probably playing it safe and staying below what Aisin says it can handle. Those specs are public.

Just a thought.

 

What are they?

 

Ive had the opposite experience with mustang dynos
in the cars ive observed they have been a little higher than normal based on the mods..... and anyone from puerto rico their dynos read way high.
Dynolabs used to be near me and i always thought its operator did a good job with the accuracy. (but that shop is closed)

 

Idk then which is true. I'd frequently heard that mustang dynos read a little lower and that dynojets read a little higher.

 

so uh 20 hp and 15 tq at 3000 rpm?

I hope no one is buying this for low end power..