I'm seriously debating going supercharged with either Comptech or SOS. I'm looking for decent amount of usable torque without going too crazy. For those with stock kits, are you happy with what you have? I have an 05, so I'd have to go with KPro if I want flexibility. It's probably the best route if I want no restrictions in terms of tuning. Given the price difference, I'm also thinking of going with Greddy Emanage Ultimate. I'd like to hear your opinions.

So far, it looks like I'll be spending around $10k if I go with KPro and a new set of clutch. Do you guys think I'd need a modified differential as well? I'm targeting around 7psi. I'm new to forced induction and the search feature isn't the best on this site.

Thanks
Terrance

 

You're not going to get any substantial low down torque with those supercharger kits because they are centrifugal chargers. (Power w/ rpm)

I had a comptech kit running 12lbs and the power is great, but still lacked the torque I wanted down low. The power really didn't kick in until vtec started, but man it was a rush when it did.

If you go hondata kpro, you'll have to change your valve cover to 06+ cam and crank sensors and a couple other things. (on their site) I opted for the AEM EMS V2 and I had no problems with starting and some other things people complain about.

You're target psi is 7lbs which is almost what comes factory with the 2 kits you mentioned. I dont recommend you spending any money on an EMS unless you want to spend money because they come with everything you need to run right out the box w/ their own piggy back included. SOS has a timing box.

If you're dead set on a supercharger kit, I'd look into the new SOS kit w/ the novi 1220 NON SL w/ their clutch and call it a day. Until you decide to up the boost, thats when i'll decide to add an EMS.

SOT also makes a Roots supercharger kit with the instant torque you are looking for. unlike the SOS kit, you will have to move a few things (battery, ac lines, etc)

I Sold my supercharger kit and ended up going turbo. I always been a turbo guy, but good luck with whatever you do and hope this helped. God bless

 

I'd definitely recommend EMS for any FI regardless of how little boost. Its safer & you will make 30-40whp more at the same boost level by getting it tuned.
FMU/ Black boxes are great from a sales standpoint, "Boost your car for cheap", but its not ideal.
KPro is great I'm sure, but AEM just as good or better for a lot less time & money.

 

At 7 psi you might not even need to upgrade you clutch right away. I had no issues at that PSI. STAY AWAY FROM THE EMANAGE. It just does not work on our cars. If you want to save some cash you can go with the stock kit for a while than later upgrade to the AEM when the tuning bug hits and it will.

 

I just installed an SOS base kit. The kit is nice - -- BUT - - don't bother with it - get AEM and go for 10 lb. My experience with the piggy back system sold with the base kit was not a good one. I'm still trying to work with SOS on some renumerance for all my troubles and additional expense. So if I was to do it again, I'd purchase the SOS unit without their FVM controller and harness and just go with AEM 6052, You will need a clutch (I got SOS sport clutch and am very happy with it), and likely should have the injectors replaced. Evans tuning sells a very nice package with the Comptech SC, 1000 cc injectors and they market AEM as well as Haltech ECU's. And yes you will need a tuner to put it all into proper running order. $10K might be a couple of thousand short, particularly if you replace the diff. Good luck and post up what you decide and how it goes.

 

Thanks so much for the insight guys. It seems like I might as well go high boost if I want decent torque out of a SC kit. Without a doubt, I'm going with EMS. I've been looking at AEM EMS V2 also. I know it's going to be expensive, so I'll have to take my time. Who knows, I might even go PTuning route. I know I shouldn't have thought about FI. I'll keep you guys posted.

Thanks
Terrance

 

I've got the SOS kit with the 1200 blower and a 3.6" pulley. This is well above 12 psi boost, and it's finally not slow at low/mid rpm any more - but it's not super fast until you get some revs on it. There are several paths to take, which everyone has already mentioned:

1. SOT roots supercharger kit. $4395 or so, I think. Lots of low and mid rpm power, and very satisfying around town. Perfect for a DD, but you won't get more than 330whp without extensive supporting mods. http://www.stageonet...arger-kits.aspx
2. KW rotrex SC. You'll get good low end / midrange, and strong top end but it's limited to 380whp or so. Personally I'd suggest this before any other low-boost kit. It's very well suited to the S2000. http://cms.kraftwerksusa.com/
3. SOS SC, Novi 1200, >12psi. This makes a mild improvement over stock at low rpm, gives you good midrange, and strong top end. You can spin it higher for more power if you're willing to risk it.
4. TTS rotrex kit (larger rotrex SC). Lots of power everywhere on the tach, but you've gotta import it from the UK. If I was going FI for the first time, I'd seriously consider this. http://www.rotrexsup...prod_s2000.html
5. SOS SC, Novi 1200, 928 motorsports impeller + boost limiter. This is what I'm probably going to do in a few months. The impeller is supposed to give a 15% cfm increase to the 1200 blower, and the boost limiter will allow you to cap off the high boost to protect your engine. You can also go to a smaller pulley and spin the blower faster, which helps too. I'm hoping this will provide a good low end, strong midrange and then as much top end as I'm willing to risk. http://www.superchargerupgrades.com/
6. Novi 1500 SC. With supporting mods it can hit 500+whp, with plenty of power down low and in the midrange too. There are a few guys in this forum who have done this. It's a custom upgrade from the other centrifugal kits.
7. Turbo. You already mentioned Ptuning, which would be my recommendation if you went turbo.

Before you buy anything, spend a lot of time reading up on all of these options. FI is expensive, and many of us have replaced our first kit with something else later on. Make sure you know what you want before you buy.

 

Torque Obsessed, thanks for the break down. My car will be mostly daily driving. I'll definitely look into SOT kit. Initially, I was thinking of going with CT kit because of CARB issues. At the same time, I don't want to spend all the money and just to find myself going for another kit.

To be honest, I'm not concerned with not getting high horsepower. I just want the car to have some low end torque and a good mid range. So, will it be safe to say I'd need a new reinforced differential if I go around 12psi? More readings to be done on my end.

Terrance

 

The diff is just a question of how you drive the car. There are a lot of varying opinions on that subject, but it seems that if you do a lot of high rpm clutch drop launches, you can break the diff / axles with just the stock motor. On the other hand, if you launch more gently and don't get on the gas too hard until you're fully in gear, the diff should hold up just fine unless you're making crazy high power levels.

I'm not planning to break my diff, and I'm not planning to reinforce it either. Just going to drive it sensibly and enjoy the power.

 

That's good to know. I never dump the clutch on the launch. So I just checked out the SOT kit and it looks more involved in terms of installation.

Terrance