Magnuson Magnum 2650

His video just said it had a bigger displacement compared to the small 1.~Liter magie, better efficient rotor design that pushed more air for the same psi, and dual side bank water to liquid intercoolers that did not heatsoak as bad as the maggie. But our harrops do heatsoak anyways so i dont think it helpes much until youre pushing even higher boost pressures. And at higher boost youll get more inefficiencies/ whine. The 1 liter maggy superchargers whined more than the harrop at the same boost that i had to do a whine mod to route the airbox sound to the cabin.
https://www.tundras.com/threads/tundra-harrop-supercharger-whine-mod.114501/#post-2969216

 

If anything the 2650 will likely whine less since it will be spinning slower to make the same 7psi. It’s also quieter by design is what I’ve read, as it is supposed to be more efficient and the whine can sometimes be a byproduct of inefficiency? I think most won’t see the benefits of the 2650 over the 1900 unless you turn up the boost with a smaller pulley. If you do that, there goes the magnuson warranty anyway. The real appeal/selling point for the bigger blower to me is a larger intercooler and lower intake temperatures which I mainly appreciate for towing heavy in hot ambient temps. Additional benefits I find appealing for the Harrop 2650 specifically are the easy to access mounting bolts due to the less bulky downflow design, and the post blower IAT sensor which I’m not sure if the new magnuson incorporates or not.

I wonder what size pulley the mag 2650 comes with as standard, the base stage 1 Harrop pulley is an 85mm (3.35”) for around 6.5-7 psi.

 

Sure but at one point he was pushing the Maggie pretty hard and he noted his gains were diminishing even with smaller pulleys.

The adiabatic efficiency gains and increased airflow you mentioned are quantifiable improvements though. Less stress on the engine for same or better power even if you aren't pushing 1000HP.

Heat soak is going to happen to all A2W systems. Unless you run an KillerChiller like product that will always be an issue; there is a finite volume of coolant.

I do remember when he took out the heat exchanger bricks and did a side by side. On thickness and fin density alone the Harrop had a higher capacity to remove heat from the air.

The whine level is in the ear of the beholder. People like what they like, if you need a mod to improve the whine more power to you.

 

I had question about this, but ended up blathering for an hour or so to myself as I explored the question. Please look at this post and let me know what you think. I posted it in a separate thread as to not thread jack this thread.

https://www.tundras.com/threads/forced-induction-efficiency-random-musings.128782/

 

Still curious if these are all still roots style blowers or if the Harrop and the new Magnuson are twin screw.

 

Magnuson TVS1900, TVS2650, and Harrop are all roots type; Whipple is twin-screw.

 

Didn't know Whipple made a supercharger for these trucks. That's cool.

 

Yes they are in the "Roots" category. Eaton develops the rotors for both using their TVS design. TVS is sort of a hybrid between old school roots and twin screw. I thnk these are using a 4 lobe design, some of their big power offerings are up to 5 lobes.

 

@reywcms and his dad just got theirs installed.

 

Yeah I thought TVS was twin screw based on something I read a while back, but I was too lazy to do the leg work to find out for sure. Since I don't even have a 5.7.
But if I ever find an RC 5.7 I'm jumping on it and supercharging it haha

 

Twin Screws is patented so vendors need permission to use that design and only a few can do so. TVS isn't quite the same but design has improved the efficiency over roots. I think they are all good choices it really depends what you are after.

 

My stage 1 Harrop gained 170 whp.
Maggie only gains 143…

Harrop before and after dyno runs.

 

There's never, ever a replacement for displacement in any format...boosted or NA...the original TVS1900 was meant for towing and started edging towards performance more later on...regardless, when it's easier to do/get the same thing, it's an upgrade/level up.../ // // /

 

Hey guys,
I'm about to pull the trigger on the maggie 2650 kit for my '13 tundra. Of course I'm reading all the harrop vs maggie talk but not much on the new 2650 from maggie because of how new it is. Any thoughts on which direction to go?

 

DO IT!! No matter what you end up with (I'm Maggy biased, myself) you will be the happiest a truck owner could be

 

Oh I want to. The wife is 'on board' and now I just need to pull the trigger. I don't plan to push the truck to 700-1000whp for obvious reasons so I think the stock maggie tune with the new 2650 2.6L charger should be a nice balance of extra power and lower IAT's. Would love to hear from someone with the unit installed already but I think it may be too soon. A few dealers are saying delivery for the kits from maggie are 6 weeks from order... with the best case being 2-4 weeks ARO.

 

it should perform exactly like our 2.65L Harrop. which is marvelous.

as you are, I'm sticking to the 600hp-ish limit.

 

Out of the harrop or maggy 2650 I would go harrop. Better design features and serviceability. Not sure if they fixed the coupler design on the new one or not. Also, the customer service from harrop is top notch and willing to assist.

 

I read that your Harrop uses stock tune for stg1, is this correct? I think maggie uses a handheld tuner but not 100% on this. Details of kit contents on maggie site state some kind of handheld tuner... previous iterations mention HP Tuner

 

No matter the kit I recommend a custom tune. Canned tunes are no bueno. I can’t recall what comes on the stage 1 kit but bigger injectors, fuel pump and intake box also recommended/required

 

I was stock when the tuning was still locked...once the ECU opened up, I tuned it & dropped down to the 80mm pulley + 650's.

I would get it tuned on a dyno by a seasoned tuner...Gandolf type dude. don't compromise.

my shit is dead nuts reliable with zero engine codes.

 

I'd like to be able to buy and install the kit and know that it's driveable and safe... and can fine-tune later on as I see fit.
I'm sure this is a very opinioned question but... which kit provides the best of both worlds?
I like maggie for the sheer fact that it's 'tried and true' but with the new 2650 it's not yet proven... where harrop has been in the market for a few years now with a lot of success.

Essentially everytime I think about which to get I end up switching back and forth. Call me indecisive.

 

All these blower kits are reliable just preference really.

 

this part.

my advice is to get a proper tune, right out of the gate.

canned tunes are not ideal.

 

Who and where did you get your work done?

 

Dennis at D3 performance. League city tx

Then had it retuned to get the trans fiddled with at Peitz performance. Alex peitz did it

the D3 tune, as looked at by Alex was very good and conservative.

can’t go wrong with either dude

but Alex’s shop is always busy now that the corvette ECU is opened up

 

That was how they sold kits when the 2019+ ECUs weren't unlocked yet. Far from optimal since it nearly maxed out injectors and knocked.

 

he did that fin comparison on a 1900 not a 2650.

 

Yes. If you see the quoted section in my response the OP mentioned the smaller Maggie which is what we were talking about.

 

Just for reference for future Mag 2650 folks. The kit comes with the HP Tuners RTD3 device for installing the stock tune. I'm testing its capabilities for logging etc., but will ultimately buy the MPVI and credits so I have more options in the future with tuners.