With the 9psi pulley and the regular trim on the supercharger it will be around 460whp and 360wtq. But as stated it adds more than just power. Way safer, much more responsive and more fun to drive.

It also opens the door to take the kit up to 550whp safely, with more mods of course.

The 8lb pulley overspins the sc though, right?

No. The 9psi technically does by a small amount. However there are several guys overspining it well beyond that even without a problem. I wouldnt hesitate to put the 9psi on.

Don't forget that they best way to go to 9psi is to change the drive pulley on the SC. You can order the 2.85 pulley directly from Vortec.

https://vortechsuperchargers.com/col...ant=7811182081

You will also need to go up in size for the idler pulley to get the correct tension on the belt. Still with the added idler it is way cheaper than what Stillen charges.

Just found the SC belt idler pulley that is needed when you go to the 9psi SC pulley. Use the NAPA 36112 part.

It's a tough call between this and tt. 460/360 is good power, but I am worried that since the boost and power builds with revs, it's not going to be too noticeable most of the time except when I am pushing it which may make me regret not going tt. But it is so much cheaper than tt...

It depends on what you really want. It's perfect for a daily driver like me, since it's less strain on the engine and trans. I tend to stay out of boost on my daily commute, which is prob why I haven't had any issues these past few years.

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:iagree: that's exactly why I also went SC.

I am worried that if I am only making much boost and getting much more power higher in the RPM range, I will rarely feel it since I am hardly up there in normal driving. Can you guys feel much difference in the 3k range?

Get the Si trim on the supercharger and then make an additional 35whp.

This behavior is not really specific to SC.... In fact, staying out of boost is even easier in a turbo application (hence the existence of turbo lag)...

In the general case with this type of SC:
SC will make boost sooner, but will only make full boost at the top of the rev range
Turbo will start making boost later, but make full boost much earlier in the rev range.

All else being equal...If the goal is to be able to granny around town without boosting until you push down on the pedal, turbo is probably the way to go. All else, however, is rarely equal. =)

Every now and again I attempt to spend an entire tank driving like an old lady just to prove to myself that the car is still capable of achieving its OEM spec gas mileage (it does!).

What exactly is the si trim? Does Stillen have a higher power version now or is that something you get through Vortech? Also, just curious, how much mpg do you lose from the SC always spinning? I already get bad mileage because of the 4.08. Figured that could actually improve a bit potentially or not get worse with tt since I would lose the 4.08 gears.

I wish I could remember, but my car has been in the body shop for months, so my memory is a bit hazy. I'm going to say you'll only have 1-2 pounds at that range. When you want power, it will come to you and the power is very linear, so there's no drop-off.

Another benefit to the Si impeller that TopGunz mentioned is that along with the extra boost, it will kick in sooner as well.

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I can't speak to the SC, but I'd imagine your fuel economy would still be far more dependent on your driving habits than whether there is an SC or TT installed. If I drive like a normal person, I still get OEM MPG (a little better, actually). I am TT though.

I see you are currently making Peak whp of 310 and Peak tq of 265.

Here is my dyno. Si trim and E85.

http://i1070.photobucket.com/albums/...sy8j8hywr.jpeg

Okay, so the is is an impeller upgrade. Is this something you just buy and it gets replaced during install or do you have to send it our to vortech?

I doubt I would run e85 with the SC. Between my 4.08 gears, the SC, and e85, I'd probably be getting 10mpg which I now we shouldn't care about butt hat's just way too low.

I know mpg depends on your driving habits, but with SC, you're almost always in some amount of boost since it's belt driven. Also, since the power come son gradually, I might even keep my 4.08 gears. With tt, those gears would def be gone and you can stay out of boost easier. The downside is $$$$ and more maintenance. I wihs I cold get a ride in a SC and TT z.

That is like the smoothest curve I have ever seen. Seb?

@ Bruclidat.... You are in a 7AT. When you stomp on the pedal its going to downshift and put you at an instant 5 or 6 psi anyways! Your back end will get squirrely and you will smile.

Not seb. Thats the beauty of the sc. Its so smooth and predictable.

HOWEVER, i just got off the phone with Seb about my new kit :cool:

Again @ Brucelidat...My new kit will come with the Si impeller already installed if you think its worth waiting for.

I'm running stock gearing and what I have noticed is that the SC starts to build boost at about 3Krpm. When cruising at ~80mph the BOV flutters a little and the boost gauge is showing 0psi which means that the SC is supplying more air than the engine needs at 3Krpm. So, if you drive mildly and shift before 3K you won't notice much difference with the exception of the ECUTEC tune which gives you a hyper throttle response (which makes the car feel much more responsive to the throttle). So if you want to go fast make sure you are in the upper rpm range where the SC can push some air. I have also noticed that the rpm drops by 1.5K rpm from each gear change so if you are shifting at redline your next gear up the engine will be right at 6K which is still making a lot of HP.

Anyway you look at it BOOST will put a big grin on your face and lay some rubber on the road!

Well, I'd have to see what's what when your kit comes out. DO you have an actual company or anything? It's kind of iffy, no offense, to drop 6.5k on a new kit form an individual on the forums. If Seb says it's good, though, that would go a long for reassurance. He's my tuner who has done almost all the work on my car.

When do you think it will happen? I'm in no rush, going to have surgery soon, then I won't even be able to drive for a while since I'll be one-armed for at least a month.

I have sold about 40 A2A kits and have never had a complaint I didn't resolve immediately. From what I know, there are 40 satisfied customers out there.

As the kit develops it will build confidence. Once I post the first dyno and price, it should sell quick.

I will have an official business license before selling them so I am registered with the BBB.

Okay, sounds good, let me know if there's an initial discount or group buy or anything. It would be nice to not have to buy a Stillen kit then make a bunch of changes. Seb is super respected in this community, if you get him recommending it, it will make a big difference.

TopgunZ is a very honest guy. I wouldn't hesitate to buy his kit. I've been working with him for the past year and he is very good at what he does.

Topz is gonna put still out of business... or, at least, ruin their 370z SC sales.

:iagree: and guys how do i get this Si impeller ?! CJM is starting my install Monday.

Stillen super charger
TopgunZ A2A kit
Tbatt's pull kit
CJM full system
1050cc injectors
running on e85
ecutek tuning (SEB)

The knowledge/ guidence I've got from this thread :bowrofl:
Ill be posting updates and results :stirthepot:

Si impeller you can send your blower to Vortech for the upgrade.

Alternatively there is:
928 Motorsports
Supercharger Rebuilds
Jon Bond Performance

Dude! This is almost exactly what I'm doing haha. Good luck! I will also be starting my install Monday! In my garage though :tup:

Looks like its to late to get it done before the install... :shakes head:

Its not hard to do down the road after its installed. Its just 4 bolts to take the SC out, then send it off.

The sucky thing is paying for a re-tune. So if you can get your tuner to give free or cheap updates to the tune then it wouldnt be bad.

Whats the average turn around time to get it done?
and cost?

It might depend on their workload. Best bet is to call them direct and ask. They have outstanding customer service. Could call 928 also if you want to go that route.

329 + shipping through vortech. Turnaround time is usually a few weeks.

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That is what they told me too last year.

Just talked to Brain over at vortech.
Turnaround time is about 2-2.5 weeks.
Quoted me @ 294.99 + shipping.

They should do this already but make sure they check your SC bearings. Might as well replace them if there are any signs of potential trouble down the road and to save you the time and re-tuning. Maybe the $329 quoted before includes the new bearings? I don't remember but I did it years ago.

Jon Bond usually has the best turnaround time at a few days.

Or drop in the ceramic high speeds and really spin it.

Getting ready to install one of the A2A kits here soon! Just a quick question, but how do you clock the supercharger? Is that something that can be donewith the blower in? Or do we have to remove it?

The install instructions show how it is done. You will need to take the entire supercharger out or it will hit the fender before making its rotation. This takes about 10 minutes.

- Release serpentine tensioner
- Remove intake boot (this has to come all the way out anyway and will not be used)
- Unbolt supercharger from bracket (4 bolts)

Done!

Look at the outer bottom bracket held in by two socket head screws. There's 3 of these brackets along the outer rim with a total of 6 screws. Remove these screws and you'll be able to spin the volute freely. https://uploads.tapatalk-cdn.com/201...363018a1f5.jpg

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