Stillen SC - put on your seat belts
 

Hi,
I am from Israel and about to embark on the "Stillen Rollercoaster." My first goal is to put all the Stillen bashers and haters to rest. My second goal is to achieve some very nice WHP and Torque numbers that will calm all of the people sitting on the fence down. I have read everypost out there about the Stillen SC and I am here to prove that this a great, powerful reliable kit. My tuner will be MaxTuning here in Israel; whom, to remind you made 555 WHP on my buddie's GTM SC. I'll be hybriding a little by installing the valvebody upgrade from GTM. Any advice would be greatly appreciated; you guys have much more knowleadge than we here. I have talked extensively to Stillen and GTM and they could not have been more helpful. Put on your seat belts and get ready for the build!!

Specs:
2011 370Z 7AT (30,000 km)
Stillen SC (to be installed)
Stillen Headers and Cats
Akropovitch CBE
GTM valvebody upgrade

Looking forward to see how much power this will put down. :excited:

How do you plan top get the WHP that high? I love my Stillen SC now that Stillens tune is off of it but with the 8 lb pulley I'm at 406whp with the 7AT.

I don't know how high it will be in the end but where aiming high.

thanks :)
Bart

I've read that Stillen headers make no difference and I heard from Stillen themselves that Stock headers work the best with their Super Charger. So maybe if you want to save money don't go with that ;)

I already have the stillen headers installed. Didn't think enough ahead in the future.

thanks :)
Bart

I have a feeling the dyno tech is gonna errm "correct" the numbers on this one ;)
Well you have one thing going for you in that it's a very high reading dyno. Best of luck though. The kit will need some significant upgrades to push over 450whp.

Here we go! A non believer

thanks :)
Bart

Experience will show you.
mods deleted my first post.

good luck op. Simple research will prove u wrong.
This will end with inflated dyno numbers or most likely you will begin modding the hell out of the kit and still not make it.

Gtm kit will make the power u seek easily.

EDIT... I thought this was a welcome thread, lol

Lol, don't beat the poor guy down!!!

Welcome brother! Good luck!


And we've been getting a lot of new Israeli members recently. Do you all know each other?

I don't think it has anything with being a believer. It has all to do with facts, design, and knowing what needs to be done in order to get the kit to make the power you are after.

For starters, install the OEM intake manifold back on the car, and get rid of all the water-air cooling that comes with the Stillen kit. Figure out a way to install an air-air front mount intercooler with a single inlet and dual outlet. Get a shop to fabricate some charge pipes that are 3" diameter, and have a good 2' section of this diameter tube before the TB's. Weld two MAF sensor housings on each 3" charge pipe, again before the TB's.

At that point, you will be ready to put it on the dyno, and see what that Vortech supercharger can make. With those mods, you should be able to hit your power goals.

Bottom line, you can't argue physics, and the proper way of going about this when it comes to making that kind of power. Also, remember that the head unit (supercharger) will rob about 40hp from your engine in order to make the boost you will need (12-13psi) to make that much power (500 at wheels)...AND the auto won't help.

So for you to make 500whp, the HP at the crank will probably have to be about 640. The blower is capable of 1150cfm, and this will be right on the limit of what it can do.

Not trying to be negative, just suggesting what you should do if you wish to do this properly, right out of the gate. That is what I would do if I had this kit, and wanted to push it.

I believe in the kit and I love what it did for my car but if you get caught up in those numbers it's going to let you down. If the Boosted Performance kit worked with the 7 AT it would be on my car simple for their attitude about customer service!

Sub'd !!!


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good luck!

Welcome - sounds like you have a fun project planned.

I'm new to Z's - but have lots of experience with Vortech blowers.

Have any of you looking for BIG power tried stepping up to bigger headunits? I used to run a YSI trim V-7 YSi Supercharger | Vortech Superchargers

The YSI is 1,600 CFM and capable of 30 lbs of boost at 65,000 impeller speed.

I was pushing 21 lbs of boost at only 6,500 rpm with big cams, LTs and ported heads in my Mustang 4.6L race engine ...

Not sure where the boost limit is on the 370Z motors though.

There are other big Vortechs out there - any try one of them on a 370Z?

http://i42.photobucket.com/albums/e3...ps4815127c.jpg

http://i42.photobucket.com/albums/e3...psa8bf69c5.jpg

http://i42.photobucket.com/albums/e3...ps4b309755.jpg

http://i42.photobucket.com/albums/e3...psed10aab4.jpg

Yup gonna need a bigger blower which is a problem because they dont fit with the stillen brackets. Good luck though you have a step uphill battle to fight because that kit has been dissected and rebuilt for so long here in the states its hard to see where you are going to find more power without throwing out half the kit. Dont forget about giving 928motorsports out of wisconsin a call for their billet wheel and high speed bearing upgrades if you are going to stick with the stillen head unit. Ported housing wouldnt be a bad idea, as well as doing something different with intake filter and coupler and not using the stillen manifold, intercooler, or piping, and DEFINITLEY not using their tune.

Now that i reread that, yup youre going to end up throwing most of it out. Thats why people buy the gtm kits i guess

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Hehe trust me it's not the head unit that's the problem it's the kits configuration
That small water to air cooler is not going to get it
You will be just blowing hot air into the motor and your computer will pull timing

You would have to remake that kit to get big power out of it

Larger cooling system maybe change over to fmic
Fab. The intake pipping and move the maf sensors

The v3 is a good head unit but like anything it's only as strong as it's weakest link

I would have saved my sell tons of money if I did alittle more research before buying that kit

Guys, no one has anything positive to say about the stillen setup?

thanks :)
Bart

It's cheaper than the GTM? If you live in CA it's legal to drive with it...?

Besides that... No one... No reason to say anything positive... It's a really expensive way to make it faster... Momentarily... Nitrous is much cheaper and the $4k+ you'll save going that route can be used on Nitrous fill ups.

God knows where you're getting nitrous in Israel, but pay off a dentist or something

So why do people buy it? Besides carb reasons.

thanks :)
Bart

BESIDES CARB?
Great advertisement, people don't know any better, people are enticed that they can buy an engine warranty.

I tell you that I don't know anyone personally who is TRULY satisfied with it. I know a local guy who has his car fully Stillen kitted out (whole body kit), had the kit installed AT Stillen, and all he says is that after he guns it once or twice oil temp skyrockets and his car is slower than before

Unfortunately, this. The only reason someone who isn't crippled by California emissions laws buys a Stillen kit is lack of research.

^ +100

The Stillen SC kit looks very good on their site, the description is well written and the numbers are very tempting. Someone who hasn't done his forum time and read the various reviews would never know what the real deal is.

Google "370Z Supercharger" and see what comes up :)

I love my Stillen kit and it's a blast to drive but I was never trying to hit a number. I wanted to give the car more power and I am thrilled with it now that the Stillen tune is off of it. I don't think you will like the kit if your goal is 550whp because the kit isn't designed to get you there. I know others have been told different but Stillen told me 500 hp at the motor not the wheels.

Here we go again , I tried this too we all remember?? I made 457 WHP and 330 wtrq at 11psi. With a bunch of upgrades(stg 2 kit) ! Impeller, fuel, and custom frontmount heat exchanger , and MAF's , if you make more than that I'll be very supprised . As it was said already the headers Stillen has said won't help, an the blocks limit is around 13 PSI ( was told by my tuner for a SC) so I wouldn't suggest going that high on the motor or trans .
Oh did I mention my motor BOOM'd also. :(

Actually I think that was the ultimate form of sarcasm I just never realized it! I'm with Trips on this one OP! Go ahead drop all that cash man! I can't wait to see the power u put down!!!

I want you guys to realize that things here are very expensive (off the charts) because of customs tax. My car cost me 105,000 dollars. Just to get the standard Stillen/GTM kit here would be around 13,000 dollars. My friend who posted here 530 or so WHP paid these amounts for his kit (GTM). The short is that someone bought the Stillen kit and decided not to install it. He is willing to sell it to me for about 5500 dollars. That's cheap for here; very cheap. I know that the kit won't make the same HP as the GTM; although, I am not really sure why (not technical at all.) I just know how to drive. What would you guys do? Either no kit (can't afford GTM here), or get the Stillen?
I think I was misunderstood in my original post. My intentions now are to install the kit as is and with a proper tune get the max HP out of it. You must realize that because of the prices here car upgrades are a very grey area. Almost everyone in the states knows the basics such as how to change the oil or small repairs. Here it's the exact opposite. As to the guy that said that I didn't do research; well I did and my pockets aren't deep enough for the GTM (13000 dollars.) What I would like to know from the forum members is what realistic HP I'll be gaining with a custom tune and whether the Stillen kit is a good and reliable kit for what it is. If anyone says anything different then maybe I'll say "screw the kit" and I'll continue stock. The most important thing for me is reliability; meaning a daily driver with almost no hiccups.
Thanks

Looking at those costs, it all makes a lot more sense.

You can make it reliable. Get a custom tune, and go overboard cooling the oil, water and intake charge. Just don't expect massive power. It'll still be a lot more power than stock.

To give you some answers on what the kit can do check out this thread: http://www.the370z.com/forced-induct...tml#post614396

Depending on a lot of factors you should be able to get 400whp out of the system, some of the 440whp+ on the list are people who took the stillen kit and modified it to get any extra power out of the kit.

Mine is also a DD and with a good tune it runs great. It only has 2k on it since install so I cant say what will happen long term. If you don't get stuck on hp numbers the kit is definitely an improvement over stock.

DD??

thanks :)
Bart

daily driver

What other upgrades do you have? 7at?

thanks :)
Bart

oil cooler, trans cooler and cat back exhaust.

What headers did U use

thanks :)
Bart

stock

I don't think it's cool that you guys are bashing the stillen kit. As long as the kit is reliable, built well and produces the horsepower that they claim it will then its cool. You guys are also upgrading your GTM kits to get a helluva lot more horsepower. Most of you aren't running standard GTM kits. I don't understand what parts of the stillin kit are not good parts; meaning they would need to be replaced and not just upgraded.

thanks :)
Bart

:confused:

Boosted Performance explained exactly what parts need to be replaced.

So let me rephrase my question. I'm looking to get the most out of the kit possible without doing any upgrades as of yet. So again I ask what parts are not good? To get the 400 plus horsepower that stillin states and to have a reliable car what parts need to be replaced. Boostperformance is suggesting to replace those parts to get much more than the quoted horsepower by stillin.

thanks :)
Bart