I have been looking at the KW and SOS SC kits. From what I have seen 450whp with those kits (if even possible with KW) is going to be a lot harder than 400-425 with a turbo. Am I missing something?

 

Yes, your looking at the wrong SC kits. There is nothing easier or hard about it, get the right blower on the car for the job, just takes a little research. If you need more then 500whp for the track in an s2000, then you expect what your going to get with a turbo and are willing to accommodate all that goes with that. Otherwise run a SOS/Novi1200-1500 at 15-20psi. TTS c38 Rotrex or Vortech with high efficiency trim and make 500SC whp.

 

NO! TURBO TURBO TURBO


















































TURBO!

 

ap1>ap2

 

You can get to 500hp in many, many ways. Here's a few to consider:

558whp SOS kit with 1500 blower + E85
https://www.s2ki.com/forums/index.ph...f=142&t=769559

533whp Ptuning with GTX3076R + Meth
https://www.s2ki.com/forums/index.php?showtopic=839183

509whp Pfab ELT with GT3076R
https://www.s2ki.com/forums/index.ph...f=142&t=694741

If you want to see them in action:
500hp SC vs Turbo race video
https://www.s2ki.com/forums/index.ph...f=142&t=823703

And of course, check out the S2KI power chart to see where everyone measures up.
https://www.s2ki.com/forums/index.php?showtopic=817237

 

 

The standard ptuning turbo is making ~400whp at 13psi with out meth or E85 both of which I do not really want to deal with. That is why I am saying it would be easier to get the power out of that kit.

Again I am looking for reliability and something tells me 20 psi all the time is not going to be the best thing for the engine. With the turbo if I wanted say 450whp I could do high boost just for a single run and then DD and track 350-400.

 

SOS makes options for their kits (1200 blower) that will not require E85 or meth that will easily get you above 400WHP.

http://www.scienceofspeed.com/products/eng...0-1220_Upgrade/

Brian

 

Exactly. Meth, water, E85 and race gas are all just ways to safely make more power with a F20c/F22c at stock compression. They allow you to run high boost levels without having to use a thicker head gasket or built / low compression bottom end. They have nothing to do with how the air is forced into the engine.

If you see someone using these, it's not to overcome a limitation of the FI system. In fact, the FI system still has to be able to supply enough air to produce that hp level. So when you see people using those systems, that means the SC or turbo can make more power than a stock engine can safely handle.

Another way to look at it is that the kits from SOS, Ptuning, Mase, Full Race, Pfab and many others can easily make well over 500whp. You just have to decide how hard you want to stress your engine and then tune accordingly. I'm going to start with 12 pounds of boost and see how well my engine can handle it (meaning how well my tuner can tune the setup) before going higher. Other people stop at 6, 8, or 10 pounds of boost. Since 14 seems to be the new 10, lots of people are getting tuned at 14 nowadays. Nothing wrong with it, although I'm not ready to go there myself. Either SC or turbo can go above 20 if you dare...

Changing settings on a boost controller for a turbo is indeed easier than changing pulleys on a SC. You'd also need to update the tune in your ECU (in both cases). If you think you'd want to do this a lot, then that's something to plan for. Personally I'm too lazy to do that, especially because above 14 or 15 pounds of boost you start needing meth/water/etc.

 

Let's settle the turbo vs. sc debate once and for all.

*link to turbo s2000 vs. sc s2000*
For those that haven't seen that, Turbo FTW.

IMO simplifying your FI set up = increased reliability. Take that how you will.