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Discussion Starter · #1 ·
The Mazda 2 is still pretty new here in North America but its been out for more than a year in other parts of the world. Tuning companies have done both supercharger and turbocharger installs on the Mazda 2. I was wondering which one would you do to your Mazda 2 and why? I'm basically trying to figure out which option would be better for me when the time comes.
 

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i will turbocharge my mazda 2 when i pick it up. nothing beats that feeling of hitting full boost and it also increases the top speed significantly. that combined with the fun driving dynamics of the car and it will be a fast and exciting car to drive.
 

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Is there any type of comparison charts between the supercharger and turbocharger out there?

I always loved the sound of the turbocharger as it spools up
 

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Discussion Starter · #4 ·
Its really hard to compare both on charts. Since both of them have different properties. The supercharger gets power down low and hits pretty smooth. While the turbocharger takes time to spool and is very unpredictable when it hits. Also the turbocharger improves your top end speed better.
 

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Its really hard to compare both on charts. Since both of them have different properties. The supercharger gets power down low and hits pretty smooth. While the turbocharger takes time to spool and is very unpredictable when it hits. Also the turbocharger improves your top end speed better.
A properly tuned and sized turbo system certainly won't be unpredictable.

The power delivery of each will be different, with more torque coming in lower on the supercharger, and more torque coming in at higher RPMS with the turbocharger. On dinky little engines like the Mazda 1.5, a turbo setup would probably net higher gains. A supercharger is belt driven and acually adds parisitic draw, like any other engine accessory (alternator, A/C compressor, etc.), as it adds power. Also, because of the Mazda2's sorta high compression ratio, I imagine a low-boost turbo set up would be quite drivable. 150 HP would make for a really fast 2.

Another thing to consider is if you're going for as much power as possible, a turbo is the way to go.

Potential benifits of a supercharger set-up would be easier installation, and probably less cost.

Anyways, I'm biased towards the turbocharger, and I think anything more than 150 HP in one of these cars would be overkill. Keep in mind, that's 50% more power, which is a huge difference and it would probably take a lot to get there. You only have 1.5L to work with, unless you're doing a bore/stroke or an engine swap.

Hope this contributes well!
 

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The smallest engine i recall seeing a supercharger for is the Cobalt SS, and aftermarket superchargers for honda's K series with both being 2.0L or more. I have yet to see one for a 1.5L
The original Miata engine was a 1.6 liter and there are supercharger kits out there for that engine, both Roots and centrifugal superchargers. Thus supercharging a 1.5 liter engine is not a stretch. And even with the parasitic losses due to it being belt driven, the gains out weigh them.

But to get a supercharger into the engine compartment may be too difficult to do as it may mean relocating the alternator and/or the A/C compressor.

It looks that it may be easier to install a turbocharger as you have more mounting options.
 

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The original Miata engine was a 1.6 liter and there are supercharger kits out there for that engine, both Roots and centrifugal superchargers. Thus supercharging a 1.5 liter engine is not a stretch. And even with the parasitic losses due to it being belt driven, the gains out weigh them.

But to get a supercharger into the engine compartment may be too difficult to do as it may mean relocating the alternator and/or the A/C compressor.

It looks that it may be easier to install a turbocharger as you have more mounting options.
Valid points made. The Miata totally slipped my mind, i remember seeing miata's push around 200 Hp with a SC.

here's one i found on youtube, sounds like leaf blower.



Turbochargers seems to be the ideal choice among tuners and manufactures. More and more cars coming out these days have turbochargers right from the factory.

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Not all superchargers are created equally.

The kraftwerks kit is comprised of a rotrex unit. These are the same guys who used to produce the JRSC as in Jackson Racing superchargers (roots style Eaton charger) for Honda cars.

The Honda Fit is also a 1.5L motor and with the rotrex type you can get over 160hp.
http://www.shop.kraftwerksusa.com/product.sc?productId=25&categoryId=4

While no kits exist that I know of that will utilize the rotrex setup, you can bet that some crafty individuals will probably custom make a setup that is marketable in the next little while provided the M2 market demands it.
 

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superchargers generally give pretty linear power output because it's related to the engine rpm. easier to drive but definitely more limited as far as max hp increase compared to turbo. I personally like the idea of the SC because of the engine response
 

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I dont think SC kits are available yet, you may have to custom your on SC/turbo set up.

**** if you can pull it off you'll be able to sell your design to someone! Just make sure your on of the 1st people to do so.
 

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Turbo's are supremely more efficient than superchargers. SC will make power earlier, but, not necessarily any smoother, older style turbos vs sc and that would be the case.

Also why do either to this car? It is lightweight and while I agree it is down on power either one will change how the car drives dramatically. Also, for the money you would put into properly doing either you could buy another car with more power from the go. When you properly tc/sc a car you have to upgrade fuel both pump and injectors, add an IC, tune, run more gauges EGT and oil temp at a bare minimum, plus buy the turbo and manifold.
 

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Turbo's are supremely more efficient than superchargers. SC will make power earlier, but, not necessarily any smoother, older style turbos vs sc and that would be the case.

Also why do either to this car? It is lightweight and while I agree it is down on power either one will change how the car drives dramatically. Also, for the money you would put into properly doing either you could buy another car with more power from the go. When you properly tc/sc a car you have to upgrade fuel both pump and injectors, add an IC, tune, run more gauges EGT and oil temp at a bare minimum, plus buy the turbo and manifold.
Very good point.

Before even dropping in a turbocharger or supercharger into the Mazda2 I think the suspension and brakes should be built up. Whats the point of having all that power if you can't experience it to it's fullest.
 

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Very good point.

Before even dropping in a turbocharger or supercharger into the Mazda2 I think the suspension and brakes should be built up. Whats the point of having all that power if you can't experience it to it's fullest.
suspension and brakes first?? are you high or something. this car already stops pretty good on oem brakes. all you would need is more a more aggressive compound for your brake pads. as for suspension the mazda 2 isnt that much of a slouch in the handling department. bodyroll is bearable and turn in is pretty quick too.
 

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knights sports in japan has actually made a rotrex supercharger kit for the 1.5 and the 1.3L Mazda 2. For the 1.5L they boast a standard Dyno of 106BHP and with the rotrex kit it boosts up to 166BHP. Full on with an emanage running 0.5 bar someone said.

I came from a supercharged 1.8L corolla and we always knew that the roots supercharger was really ineffective and suffered from massive heat soak. We always wanted to go with a rotrex kit instead of the roots kit but noone made it and we didn't wanna go into it ourselves.

Even though the whine won't be the same, I love the sound that comes out of superchargers. The linear power draw serves me well as i like to autocross and do canyon runs. 160bhp will serve as more than enough power. It just goes to show that this rotrex kit can bring our car from 101 stock HP to 160 where my corolla roots kit could only bring my 130 stock HP car to 170hp.

With the lighter car we'd still be up there with the main competition that I was used to stomping on like your n/a integras, ek civics, 328i's, the IS's 2 and 3 series benz lol...

unfortunately from the catalog says that this kit is worth well over $7000 USD...
 
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