When did this intake come out, and does any one have side by side comparison to the JMF Drag yet? It gives a lot of info relative to the 1g design etc. But falls short when it talks about the 2g design. Also anyone who is running the JMF Drag version at or around 50lbs of boost, do you have any issues with the welds cracking? I currently have the original version of the Magnus sheet metal intake and have cracked it about 4 times. I believe I have that issue resolved for now. Any help would be appreciated.

I'm personally curious about this manifold compared to an Evo3 intake manifold. I wouldn't want a welded intake as I've seen a few that have cracked and wouldn't want the hassle. I believe Curt Brown was running really fast times with the Evo3 manifold but not sure how they would compare.

I'm looking at a v4 magnus cast intake for my 2g but not much info on them yet.

I know that's a lot of cash compared to an Evo 3.

Seen this a while back thought it was interesting.

Is it just me or does it look like they're trying to copy Magnus's design????

v8s_are_slow said:

Is it just me or does it look like they're trying to copy Magnus's design????

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Come on now, both are just the results of tons of diligent computer engineering and testing for a design that offers the best possible flow and function, so yes they will be similar. Any subtle improvements should be appreciated and welcomed.

I run an evoIII and when i mentioned i was thinking about getting the magnus cast. one of the members from my other forum said he made 680whp using the 1G nt tb / evoiii intake combo like I have and I shouldn't worry about upgrading for my current set up, HX40.

91 GSX said:

Come on now, both are just the results of tons of diligent computer engineering and testing for a design that offers the best possible flow and function, so yes they will be similar. Any subtle improvements should be appreciated and welcomed.

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So then basically, all testing is basically gonna come out to the results already done at Magnus then??? Lol. If they copy his design (after testing), then so be it. But wondering what Magnus would think about it. I know companies are already copying some of his other designs. And MAP was copying his launch control device. But maybe they just did lots of testing and it just happened to look the same as his. Hmmm....

91 GSX said:

Come on now, both are just the results of tons of diligent computer engineering and testing for a design that offers the best possible flow and function, so yes they will be similar. Any subtle improvements should be appreciated and welcomed.

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This.

v8s_are_slow said:

So then basically, all testing is basically gonna come out to the results already done at Magnus then??? Lol. If they copy his design (after testing), then so be it. But wondering what Magnus would think about it. I know companies are already copying some of his other designs. And MAP was copying his launch control device. But maybe they just did lots of testing and it just happened to look the same as his. Hmmm....

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There are only so many ways you can make a manifold that will 1. Perform 2. Fit the bay, 3.be affordable.
JMF makes just a good of a product as magnus. And they have tone of testing done. Hell Magnus was blowing welds back in the days. Everyone changes and updates. And if they want to reinvent something and it looks closer to magnus then it is what it is. The fact that JMF and Mangnus and who else is still making us products is welcomed.

Now don't get me wrong (and I don't wanna get off topic of the original thread and have a bunch of bickering). I'm not necessarily complaining about it. But you do have to admit that it looks like Magnus manifolds. Maybe they didn't copy it. Maybe it just looks like it. Maybe they did copy it. Hell if I know. I'm just stating an obvious fact. Do I like Magnus prices? Heck no. So having options are good for those of us (like myself) who are poor. All I'm simply stating is that it looks similar and wondering if they're copying it. Nothing more.

Now back on topic, I'm wondering what the horsepower limits are of the manifolds, and which will be best for low torque. I would think that the Evo3 would have the best torque down low but not sure what the limitations are. I currently have a ported 2g manifold with a n/a throttle body and no idea what the limits are.

As for that JMF manifold above that's the new drag manifold, anyone know if that's even available now? I didn't see it on their website. Wondering what the price difference would be compared to Magnus.

I can tell you my set up.
2.25 i/c piping, 1G NT tb, evoiii intake, FP exhaust manifold.

Hx35 6 blade bep bolt on housing - starts to spool at 3200rpms (full boost at 3800-27psi), power drops off at 8000rpms

HX40 6 blade bep bolt on housing - spool starts at 3500rpms, full boost 4400rpms, power drops at 8200rpms.

I have to admit when i first bought this car i had lots of plans to change parts but I love the power band of this combo for a mostly street drove car, and it should make for a fun road race car as well.

I have the Magnus v4 on my car. The results with that manifold were quite drastic. I am running a FP Green turbo, and there was virtually zero loss in spool compared to the stock IM. As to be expected, the top end gains were nice! It just never "falls off."

Attached is a dyno sheet that shows the difference in the power band between the stock IM (dotted line) and the Magnus (solid line). All runs were done at 29psi.

What ever became of the JM fab cast intake? its not listed anywhere on the site?

95talongirl said:

I have the Magnus v4 on my car. The results with that manifold were quite drastic. I am running a FP Green turbo, and there was virtually zero loss in spool compared to the stock IM. As to be expected, the top end gains were nice! It just never "falls off."

Attached is a dyno sheet that shows the difference in the power band between the stock IM (dotted line) and the Magnus (solid line). All runs were done at 29psi.

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It says one is E85 and one is 100 Oct.
That could explain a lot of difference too.

Octane wouldn't limit RPM.

I would assume that spool could vary though if timing is adjusted based on the fuel used. As well as the boost level.

I would still like to hear a comparison between the Magnus v3 or v4 cast and the JMF drag. I just picked up a JMF drag because I was looking into the race and the drag has proven to have better spool and overall gains than the race. They have similar designs, just one is sheet metal.

95talongirl said:

Octane wouldn't limit RPM.

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Thanks I get that, see below. Also, your gains up top are in line with most stock IMs to aftermarket intakes.

v8s_are_slow said:

I would assume that spool could vary though if timing is adjusted based on the fuel used. As well as the boost level.

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Thanks for helping there.