STILLEN 370Z Supercharger System - Announcement!!!

christian370z

He has a smaller pulley and is running around 9 psi I believe? Anyhow, he definately has one of the highest hp consumer built supercharged Zs right now.

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-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

christian370z

I believe shumby voluntarily elected to go with the 6 psi pulley because of longevity concerns with his 7AT, which is not reflective of the full 8 psi by his decision.

__________________
-320whp / 259wftlbs-
SP Rays -- RE-11s -- SpecialtyZ Tune -- Swift Springs -- Stillen 25R Oil Cooler -- Stillen G3 Intakes -- Berk HFCs -- F.I. 12" CBE -- Stillen Sway Bars -- Es14 Spring -- INGS+1 lip -- CF Spoiler -- GTR Start Button -- VLED Parking Lights -- PWJDM V2 shift knob

Phimosis

Ok, so one person has a reason why their car doesn't work as advertised. What about the rest? I see posts saying the 8 psi pulley doesn't deliver 8 psi. So the GTM kit is not working as advertised, but the forum users
that are GTM promoters overlook this.

There are also GTM customers who have their supercharger installed, but say they're not going to post the dyno results until their car is "ready". Just because they don't post what the problems are doesn't mean they don't exist. We've been waiting for 3 months since posting that their supercharger install was completed, but still no results. The GTM promoters were quick to attack Stillen when I posted back in July that my car was making 422 hp, but hade driveability issues. Then in August when I posted that everything was working perfectly, the GTM promoters ignored it and kept focusing on the forum users who's problems weren't resolved.

One of the most vocal disatisfied Stillen customers has been Tom Navone. When asking him if he ever received a tune that had good drivebility, he said yes, but the top end was too weak.... it only made 390 hp. But, that is the same as GTM's best example. The GTM promoters have overlooked this as well.

If GTM problems didn't exist, there would be more than one user's dyno chart posted and if they weren't having problems, they'd they would be getting much closer to 452 whp they advertise in their press release. The GTM promoters seem to overlook this as well.

Q8y_drifter

You comparing a 390whp Stillen kit that did not deliver the 418whp power level when it was running 8/9psi versus a GTM kit that made the same 390whp on 6psi.

The reason 8psi was not delivered on some kits was due to the LTH's and VVEL tuning not the SC kit itself.

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08 G35 5AT Sedan | Stillen CBE | Invidia HFC | Injen CAI | Uprev Tune | Akebono BBK | Tanabe Coilovers | Hotchkis Sway Bars | GTSpec FSB | Black Headlights & Grille | Volk GT-F Wheels | Hankook V12 Evo Tires

tomnavone

The best tune for me was tune #7 and my hp is 375 and torque is 295 and weiboy is in the same ballpark along with g37mobbin. Some of the other seven tunes yielded higher numbers but the drivability was bad.

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theDreamer

I hope you are not referring to me when you say not making the full 8 psi.
I have long tube headers and we are working directly with Sam at bringing these two mods together for the better of the community. One reason I will not post dyne numbers is because my kit is a work in progress, now that does not mean it is broken or not working. I drive it everyday for the past few months and have put over 3k miles on it with only one issue so far. Hot starts were a bit off with the first tune, sent some quick data to Sam and we made the adjustments and got a new tune.

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theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN
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Houston Zs // Facebook // Twitter // Instagram

RCZ

Come on now...if you had made good power you would not have waited until it was "done" to post results. It may not be broken by the definition of the word broken, but its obviously not doing what you were hoping it would. My car is a work in progress too and I'm sure I'm going to make more power when winter rolls around, but I put my numbers out there.

I mean, ok we get it, but don't BS us...

Personally though, I don't understand how you guys have the nerve to not post results YOU HAVE and then come in here and bash on the Stillen kit and the people who have actually posted their numbers. Am I the only one who sees a problem with that?

dixon cider

Can't we just all get along? I mean really, this is getting stupid. How old are we? Didn't know a bunch of 19 year olds could afford this car yet???? Excuse me while I duck now..........

theDreamer

Nope, still would not have.
People are waiting for the full 8PSI run so I will wait to post what they want. There will be plenty of standard GTM stage 1 builds that I can wait. I do not BS nor do I intend to sway numbers in favor of one company. I will say I was a bit shocked on the original pulls making 5PSI, but then we got down to analyzing it and found out what was going on and continue to work on it as quickly as we can.

Are you assuming you know what I want and what I plan to do with my car? When I originally talked to Sam the very first time, I told him I might end up running a 6PSI pulley with stock headers/cats just so I keep it at 400whp and no more. Then we threw in the idea of LTHs and started on a different path, and we are where we are today. No problems, nothing is broken, everything is working as intended and we hope to combine the LTHs with the stage 1 kit so everyone can enjoy this combination.

On your last paragraph, Shumby has posted his results, other G37 guys have on the other forum. I believe I am one of the first with a completed 370z kit while the others have opted to wait for the new piping instead of finishing then having to go back and change the piece out. Also, before you get all jumpy on this revised piece, nothing is wrong with the current one. Sam is improving the current design to be even better, if I never got the new piece I would never care, but he is sending me it free of charge to help all SC owners have a better kit.

You really want to start a mud slinging war RCZ, great, but do some research before posting instead of just putting the blinders on and typing. I am favor of neither Stillen nor GTM, I have owned products from both and many other companies. I buy what I want, use it, if I enjoy it or hate it I report back exactly what I have found wrong and right. We are all happy you have a working SC kit, but as it has been pointed out no one here seems to care really. You got a custom tune, are running other upgraded items Stillen has yet to test themselves and are putting down good numbers. Congrats, but lets move on past that point and look at what is going on with the majority of owners, from both sides. Stillen is still having issues with their tune and GTM customers are just waiting for a new piece to bolt down and be on the road.

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theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN
theDreamer's Silvia // URAS // GREDDY
Houston Zs // Facebook // Twitter // Instagram

Phimosis

Dreamer,
You claim to be unbiased and neutral and not promoting GTM or Stillen, but to claim that everything is "working as intended" with your GTM kit is biased and not accurate. Your kit was intended to make 8 psi of boost. You get 5 psi. Your kit was intended to make 450 hp. Yours does not, or you would have posted the results. Even if you made 400 whp you would be happy and would have posted the results - you have stated that 400 whp was your goal. You state that the fix is a simple bolt on, but a kit that "has no problems" and is "working as intedended" should not need a fix. Regardless, the fix has been in the works for 4 months and is still not done.
The truth is that the GTM stage 1 unit is just a little undersized for the 370z so that it produces good midrange power at the expense of peak horsepower. With the GTM unit, it starts falling out of its peak efficiency range when you try to push it to 8 psi of boost at the high flow requirements the engine has at the redline. The Stillen SC is a bigger unit and makes less boost in the midrange, but more in the upper rev range when the SC gets into its peak efficiency. I have headers and cats and exhaust and the Stillen kit still makes 9 psi of boost.
I make my comments based on the data. That is the idea behind being unbiased.

theDreamer

What is wrong with my kit?
Oh I am not making 8PSI because of my long tube headers, you claim you have headers and HFC, congrats but you still have major restriction which creates back pressure. Do you even know how LTHs will alter a SC unit, go spend some time on an American car forum and talk to a few of them about SC & LTHs, I did so I got an understanding of what to expect. I knew ahead of time I was going to lose boost and would most likely require a smaller pulley to bring it back up. I cannot magically wish for Sam to drop everything and provide me with my every need & want for this car, he has a business to run. We got the kit running and viable with the LTHs and wanted to see how much it altered things.

My 400whp, who said I was not at that? No one knows my dyno results but me and one other person at Baker Tuning. I will not post my results until we are able to get back to 8PSI because that is what people want. If we are unable to because the unit is to small and have to go back to a more restrictive stillen header/HFC setup then we will.

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theDreamer's Z // Fast Intentions // Uprev // GTM // HKS // TEIN
theDreamer's Silvia // URAS // GREDDY
Houston Zs // Facebook // Twitter // Instagram

tomnavone

Buzzlitonian what were your final numbers? Any dyno sheets to share?

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weiboy718

well, this is what i'm making now!

tomnavone

Are u satisfied with the results and drivability? Do u feel u got what u paid for?

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weiboy718

I'm never satisfied but it is what it is and I'm gonna enjoy it!

There is still a few drivability issues that needs to get resolved. it still pings on the low end and my hot start is showing again. I'm not too worried about the hot starting, just the low end ping is what's really concerning me. I'm sure uprev or stillen is gonna fix it soon just don't know how much longer and I can't wait to get everything squared away and get the stupid carb sticker.