STILLEN 370Z Supercharger System - Announcement!!!

DannyGT

Wait what?

So because your kit is 'perfect'...How does a new pulley and a more conservative tune help with the purchase of a kit that was supposed to make XXX numbers? I mean the whole stupid battle back and forth between them and GTM was fun and all, but I think what people want to know now is, what are the new numbers and how do they compare...

I know this is the INTERWEBZ and all, but is it true 2 kits have failed and since then a letter has been sent out?

Dear STILLEN Supercharger Customer:

Over the past month we have shipped out many superchargers and have received great feedback from our customers on everything from the kit itself, the ease of installation, the quality of the components and the driving experience. However, we have also found there are variations in boost with some cars experiencing pressures higher than we are comfortable with.

As the reliability and longevity of our customers’ vehicles are our utmost concern, we are contacting all those that have been shipped the supercharger kit. We will be supplying a conservative interim tune to replace the existing tune. We are asking that the vehicles not be driven until the new tune is installed. We have released the interim tunes and ask that you install the new tune in your vehicle immediately.

Within the next 7 to 10 days we will be releasing a revised tune if necessary depending on your vehicles configuration to ensure that all vehicles will be running at top performance within our design specifications.

Please call our office Friday morning any time after 8am (PST) at 1-866-250-5542 with any questions on the process of updating the tune in your vehicle, which should be done before the vehicle is driven. Instructions for updating can also be downloaded here: http://www.stillen.com/misc/OEM_Flash_Update.pdf

I'm glad they are reaching out and doing the right thing, but I cant stop thinking about the **** that was given to some GTM fan's, and then this happens...

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RCZ

The kit makes the numbers at 7.9psi. It seems the problem was overboosting a little so they are doing something to adjust it back to that psi...why in the world would the numbers change? Think about it for one second... the numbers will be the same. My numbers are at 8psi and I check my peak boost every time I take it WOT to redline. Never seen it over 8.

You said it yourself, its the internet. I wouldn't believe everything I read. I hope you're not talking about Whiddles and weiboy.

DannyGT

Dude, you got your tune done by a well known, and aggressive tuner /grats.

I asked if the rumors where true, I'm not spreading them...that is my point. I will have my kit installed, with meth, and custom tuned...Be sure I will report everything, good or bad.

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Performance GTM Stage 1 SC, GTM Res.Test Pipes, Invidia Gemini Exhaust, GTM HD Oil Cooler
Wheels & Suspension AME Tracer TM02's 19x9.5F 19x10.5R w/ 265x35F & 305x30R, Hotchkis Sways, BC (BR) Racing Coilovers (Car Sold)

shumby

dramer has driven it already. and he will be getting his offical dyno on Saturday.

I heard stillen boost has been climbing to 28PSI and blowing engines right out of the cars hood leaving it on the road. Just saying thats what i heard. lol

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Originally Posted by SAM@GTM
Engine detonation is not normal and it should never never happen, and whoever told that need to do something else for living .
Sam

Phimosis

The resized pulley spins the s/c slower and makes less boost, which makes less horsepower. That setup up is safer, but it is not what they advertised to the public when they started accepting deposits on the kit.

The cash flow generated by the number of preordered kits was based on numbers that looked very impressive. If they later come back and say, "well the setup we were intially selling wasn't safe, so we are going to give you a kit that makes 50% less power for the same price," are you going to be satisfied?

I think most people would not.

I posed this question/statement to Stillen's sales team: A 108 whp increase is roughly 50% lower than what I was expecting based on Stillen's press release of +155 whp. Even with the pulley revision, I was expecting 140ish. But 108?

The response received from Stillen: "Please keep in mind a couple of key points: Your baseline dyno was performed on your car as it was received at our facility - with STILLEN Gen. 3 intakes. headers, high flows and a CBE on the car. Our press release compares a completely stock vehicle with a supercharged vehicle with a CBE. A 370Z with our Gen 3 intakes, headers, high flows and CBE will usually achieve an increase of 50 HP over baseline. So if you take 50 HP from your baseline of 312 your real baseline would be about 262 HP. Compare that to the 422 and you have an increase of 160 HP. Obviously some of that increase can be from the headers and high flow cats but those two parts would typically provide 20 HP on a supercharged vehicle (the supercharger replaces the Gen 3 intakes so it isn’t accurate to account for them on the baseline). Therefore the supercharger and CBE would be providing you with about a 140HP increase not 108 as you state."

I dunno. The dyno graph is post #976 on this thread (and reposted below). It says that the power made after modification with supercharger is 422.4 whp (at 68 degrees F ambient) and before modification it was making 315.5 whp (at 75 degreesF). Quick math with a calculator says that the increase in whp is 106.9 and the increase in torque is 51.4 lb/ft

The graph with the new pully is also quite different than what RCZ has resulted from post #930 in this thread. In his dyno graph, the car reaches 300 lb/ft torque at 3,800 rpm (at 99 degrees F). The graph in my post (#976) with the revised pulley shows 300 lb/ft of torque being reached at a higher 6,200 rpm.

I suspect the difference is because centrifugal superchargers do not make make much boost at low rpm. Think of a hair dryer with it's motor spinning at 3,600 rpm (60hz ac x 60 seconds = 3,600 rpm). It makes very little air pressure. But, spin it at 60,000 rpm and it would make real boost. So I am thinking the revised pulley is killing the midrange as their press release advertises 343 lb/ft of torque @ 5,800 rpm compared to the 306 lb/ft @ 7,200 rpm seen in post #976 with the new, revised pulley, as well as the car making no increase in power over baseline at 3,000 rpm or lower.

I have posed that question to Stillen and asked if something can be done to rectify the situation. I am awaiting response.

Phimosis

Nope, I'm not upset what the Stillen kit is compared to GTM. If GTM didn't offer a supercharger for the 370z, I would feel exactly the same way: I feel like I did not receive the product that was advertised to me. If I did get the product that was advertised to me, I would be satisfied. This has nothing to do with GTM.

Can we get a moderator to clean this thread so we can keep on topic? It doesn't bother me that everyone's joking around here, it's just that the message gets diluted.

Thanks,

Phim

AK370Z

Please keep this thread on topic. I don't want to see any personal attacks in this thread. If you have a problem with a fellow forum member(s), please exchange emails and do it outside the forum.

Thanks.

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stormcrow

Even though I was hated for it, this is the reason why I was so verbose in this and other threads. The truth will always come to light...and I now have a small sense of vindication.

MMC Racing

our hero

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2014 F150 Raptor, 2014 Mazda 3, 2015 Nissan GT-R

Phimosis

Stormcrow: yes you are vindicated for being skeptical. I am a skeptic as well. I took issue with you previously because some of your posts were inflammatory and were perceived as attacks on certain people. You've been much nicer lately though. :-)

I'm hoping that Stillen will address the tuning issues and that the end product will be safe and will have an output that is in line with what they advertised, so that they are vindicated.

It does seem unusual that they only shipped a few kits with the original pulley, then very early on, pulled the kit, added a new pulley and a new tune....presumabley a tune they have tested......but then have still kept the old press release for all of their advertising material and no new press release or dyno figures have been offered.

stormcrow

Phim, it was more than skepticism for me. I have had previous experiences with the Stillen products and, in turn, offered my POV when seeing the very same sales tactics and promises that lured me in and duped me. My vindication stems not from being a skeptic and being proved correct in that arena, but from being proven correct that the very same issues are created repeatedly at Stillen. I would have no issue with this company if they approached their clientelle with truth instead of false promises, stall tactics, flimsy excuses and outright untruths.

In truth, I am sorry that you had to suffer the same fate as I. But, at least you are an intellectual person who can now help other members of the community through voicing your experience. Good luck to you, sir, on getting things sorted.

370Zsteve

..........<biting my tongue>...........he's the only one on my ignore list for a reason.

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SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.

370Zsteve

Taking bets on which kit blows up more engines over time.

I'm placing my bet on the GTM kit.

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SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.

m4a1mustang

OK, so it's Monday. I guess Stillen opens for business in what... 3 hours?

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tomnavone

Ill be on the dyno in a few hours if stillen has worked out all the kinks

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