could you post the sot kit dyno graph? never compared em. but ive built and driven quite a few vortech/comptech kits. at 8 psi they are slow, and make 330-350 wheel.
jacks car on 8 psi KW made 400 whp. and there was never a spot where it didnt just rail. 3500 and up it was just insane.
Thats all im sayin. its the only KW kit ive experienced, but it was quite nice.

 

8 psi made 400 whps??

r u sure? or is it on Church's dyno??
as for SOS dyno graph, u can visit sos website.

 

There is also the Vortech and SOS kits as well.

 

Still centrifugal, very similar to what he's already looking at.

SOT is what you want.

 

Yeah I really like the roots. I know it's not that efficient, I know it makes heat. Like I mentioned, I just had one for a year. But it just feels like the car had a huge motor! No lag, always power, instantly. I am concerned about the power at 3k, as I will autocross the car. I usually can get a faster time if I DON'T downshift. That's why coming out of a corner in 2nd, at 2,500rpm I could punch the gas, and power was there. I know the roots bring on more torque quicker than the others. Now I don't need 400 hp. It would probably be too much. Although, these other superchargers look great, I feel I might be in the market for a roots style again. Thanks for all the input guys! I'll still debating, but leaning towards the roots style.

 

PM Mark (MugenRioS2k) he was the beta tester AP2 SOT roots. We autocross together and he could give you all the details of driving the S2000 in an autocross setting. I know you will want R comps when you get the blower

 

There is one thing that you have to look at. With the RSX you can spin the blower at 11psi and make about 300 whp. With the S2000, you start out spinning the blower around the same RPMS as the RSX does at 11psi and you make the 300-330 whp. If that is all you are looking for, then that is where you will want to go, either that or a small turbo as discussed earlier.

Now if you are wanting more power and sticking with a s/c versus a turbo, then the centrifugal can go much higher in boost, like 12-17 psi with supporting mods, this can get you a lot more whp and still end up with a torque curve similiar to that of the roots.


Remember these are not ivtec motors, so the cams are fixed. I think this results in all the superchargers boost curves to look similar as far as HP goes, the roots does build torque slightly faster, but it is very flat where the centrifugal can actually increase torque near the top end as well.

 

http://www.stageonetuning.com/

here is the roots sc for u....
good luck

 

That's actually a good point to consider.

You might want to compare ~370-400whp peak on a centrifugal to ~300-330whp roots. With those power levels, if the crossover from roots > centrifugal to centrifugal > roots is 4-5k RPM, that's something to consider. If auto-x is your big concern, consider that you will probably never dip below ~4-5k. (And SOT's roots kit probably can get you 400whp--camuman (sp?) would be there if he'd just go over to church's magic dyno--but the centrifugal kits have a much longer history at ≥400whp.)

Anyhow, you can't go wrong with any of them if it's a quality install and it meets your personal goals. It sounds like you want fun to drive over peak power, and the SOT kit might be your best bet.

I hope you end up getting the kit that's the most fun per dollar for you.

 

8psi on a dynojet roots blower SOT/SXM kit