[BravoMyles]

I've been looking at FI for my 2017 whenever I save the funds up for it. At first, I was looking at nitrous, but now I've decided I would rather go S/C so I have the power all the time instead of having to worry about turning on a bottle, heating it, and worrying about all other nitrous things.

That originally brought me to the Magnuson Heartbeat. Looks solid, good numbers, out of the box OEM install and tune.

Then I started looking at prochargers. I had looked before with my 5th gen, but never seriously. I know they also have OEM install and tune, plus it's actually a couple thousand cheaper.

I get how both function, and how the procharger is different from a standard S/C. What I don't know though, is what are the benefits and drawbacks of either style? Is one inherently better than the other? Or are they simply just a style preference?

[laynlo15]

Maggie will be instant boost, procharger will come on at a little higher rpm. Both will make similar power. I'm considering both also. I did have a 1900 Maggie on my G8Gt and loved instant power and sound as I had a Rear Gog drive on mine.

[BravoMyles]

Originally Posted by laynlo15

Maggie will be instant boost, procharger will come on at a little higher rpm.

I see, I was under the impression that procharger would come on early as well, being belt driven.

[laynlo15]

You can change pulleys, but I don't think it will ever build boost as fast a Maggie, it is instant

[BravoMyles]

Makes sense. I've also heard that you can up the boost on a procharger easier. Is that true? I'd like room to pump it up as I mod more.

[SC88]

Originally Posted by BravoMyles

Makes sense. I've also heard that you can up the boost on a procharger easier. Is that true? I'd like room to pump it up as I mod more.

Yes it appears there is more room to grow into a Procharger. I've emailed both and the heartbeat comes with a 96mm 3.8 pulley for 6psi and the smallest they offer as of right now is 70mm which is a 2.7 pulley 10-12 psi maybe? they wouldn't give me a direct answer!

I know procharger base kits come with a P-series and make 6psi. from there you can swap pulleys to increase boost on that blower or just go directly to the D or F series blower and increase from there.

Downside (as some see it) to the procharger like mentioned is instant torque. A Procharger will not make as much torque down low as the Heartbeat, E-force or whipple @ the same boost level.
One way to increase lower rpm power on a procharger is to spin it faster but you have to watch out for over spinning the blower or making more boost then your fuel system or motor can handle.

I am waiting for whipple to release theres and then make a decision, I like the idea of the instant torque down low but I also want something with room to grow into down the road.

[BravoMyles]

I'm leaning towards room to grow with the procharger, plus the price is a good selling point. I can deal with less down low, when I have more room to expand. Trying to find out as much as possible though.

[SC88]

remember that price is for a P-1SC blower. The next step up from that one depending high much you want to make will be the D-series.

I didn't mind the F series on the other Camaro but I did wish the power came in sooner while on the street. I think D would be the perfect compromise for a 800hp street car @ 10psi

[BravoMyles]

Base P series would be fine as long as I can build from there. I'm not looking for 800 immediately because this car is already the fastest I've ever driven.

[BravoMyles]

From what I understand as well, is that you can take a standard P series and upgrade pully and stuff to get a higher series. Is that right?

[JaxChris]

A centrifugal supercharger is, in its' basic principle, the compressor half of a large turbo that would normally be too large for the application if it were turbine driven. Instead they swap the turbine for a pulley driven gear system which allows for less mounting complexity.

As it is oversized in most regards (hence the large "room to grow"), this leads to increased turbo (errrm, boost) lag -- sliding "full power" farther up the RPM range.

[BravoMyles]

So theoretically, like a turbo, if you add more aggressive addons could you essentially eliminate the "lag"? Say a better pully and whatnot.

[toohighpsi]

Originally Posted by SC88

Yes it appears there is more room to grow into a Procharger. I've emailed both and the heartbeat comes with a 96mm 3.8 pulley for 6psi and the smallest they offer as of right now is 70mm which is a 2.7 pulley 10-12 psi maybe? they wouldn't give me a direct answer.

Boost is easy to change on any supercharger. The Maggie Heartbeat ships with a 98mm pulley for 6.5 psi. Calculating boost with a PD device is fairly easy. Start with your absolute pressure with the current pulley 6.5psi + 14.7psi for atmosphere = 20.7psia absolute. Multiply that by your change in pulley ratio, in this example it's ~40% more speed going from 98 to 70. That gives us an absolute boost pressure of 29.7psia - 14.7 = 15 psi of boost.

So on a Maggie Heartbeat for Camaro LT1:
98mm = 6.5psi
95mm = 7.2psi
90mm = 8.4psi
85mm = 9.7psi
80mm = 11.3psi
75mm = 13.0psi
70mm = 15.0psi

The Maggie kit includes a 204mm (~8") crank pulley. I've seen one of our other members here who has switched to an aftermarket damper with a 10" pulley (yup, already added that to my Christmas list). Using the 10" lower and a 75mm upper will yield a blower speed of 21,000 RPM and 19.5 psi boost on a 6.2L engine which put you right at the 1K HP flow mark if you have the supporting engine components to withstand it , hope that helps!

[Slickcas]

At higher boost the maggy will be running very hot. Need a lot of cooling. Even with a icebox you have a very limited amount of time before you will be way down on power. The centrifugal will be significantly lower in air temps. Also the power delivery is very smooth and predictable. I am at 704 RWHP with Vortech and a M6. The maggy at that lvl is very good at Dragracing but the Vortech seems to work better everywhere else. I can hot lap the car all night with no heat soak.

At lower boost I like the Magnuson heartbeat a lot! Extremely fun streetcar.

At 12+Psi just go Centrifugal and your car will still driveline stock when driving normal.

Really don't think you can go wrong with either.