STILLEN 370Z Supercharger System - Announcement!!!

Kyle@STILLEN

We retain the intake air temperature sensor in the factory MAF sensor just like NISSAN does on the GT R and the 300ZX. We have done a tremendous amount of testing with our car on the dyno, street, and under hard driving conditions while we were testing out at El Toro and it allowed us to get a really good idea of what is happening. Plus, the knock sensor is very sensitive on these cars so even if there was any detonation picked up from the sensor it would automatically switch you into the high detonation map instantly and greatly decrease timing to ensure you don't damage the motor.

I have worked on a couple of cardboard samples this weekend and we're going to continue working on them. Their final production won't be cardboard...Pre-preg carbon fiber will be the final option.

First boost- 7.9 psi because we wanted to be specific for you guys. We will get to a solid 8.0 prior to shipping any kits.

Second- It is kind of hard to answer the intake temp question because there are so many variables. For example, during our testing we did some really hard tight, high revving corners to really get the temperature up and then parked the car for a few minutes to let everything heat soak then performed a 0-140 MPH test. Obviously with everything heat soaked this would be a worst case scenario and not even realistic. Even if someone were to take the car to a race track they would get 20-30 minutes between races to allow everything to cool back down and they would get the cool down lap at the end of the session and the session would have been performed at higher speeds anyways so there would be more air flow in the first place.

Let me see if I can pull some of the datalogging equipment from our engineering department that will show the efficiency of the intercooler. I know that I've seen some graphs which illustrate it really well. Some of the information is proprietary as you can imagine but I will see how I can put it into an educational light.

I saw the answer earlier to the first question regarding adiabatic efficiency. Long answer short, yes, the supercharger is in its efficiency range and has plenty of room to expand.

I don't know what the weight of everything is. We haven't really been weighing the parts that come off along with the parts that go on. Keep in mind there are quite a few parts coming off the car. I will try to get this information in the next few weeks for you.

Last question was answered in the reply above.

Because we don't have an aluminum casting foundry in our back yard we have outsourced the casting process to a company located in Los Angeles, CA. They have been a leader in automotive high performance casting manufacturing for years and they make parts for some of the largest manufacturers in the world including, Roush Racing, Ford Motorsports, Dart Heads, TRD, Magnusson superchargers and many, many more.

Just like our castings we do not have a powder coater on site so we rely on the experts who have been doing this forever. Again, we use the same powder coater as Magnusson superchargers, TRD, and many more.

We have been in contact with the insurance/warranty company and it looks like we will be able to offer the 3 year/36,000 mile engine warranty on this kit as well. We have a tentative, yes, on the warranty but we don't have the final confirmation yet. We should have that soon.

The G was running around 8.5 psi. However the G also had a different charge pipe and intercooler. We made a few changes to the setup during the swap to the Z.

1) I don't have an exact deadline on the intro price from my manager but my guess is going to be around 30 days. I'll confirm with my manager's though.

2) This is the kit that we plan on submitting to CARB for testing.

3) Warranty info answered in another reply on this post.

4) We are using the UPrev software to handle the ECU reflash. We have found that it is very user friendly and gains access to everything we could possibly want to change. When someone places their $500.00 deposit we send out the UPrev software so the customer can download their rom and send it back to us. This confirms that we have the tune on file and ready to go for the installation so that there is no downtime during the install or anything like that.

There will be complete instructions on what to do when the software arrives.

We are not using RC engineering injectos or Denso's, we are using Deatschworks injectors which are very popular on a lot of turbo and supercharger applications.

There is no piggyback on this kit.

We took this picture but to be honest with you, it really sucked. The lighting was all wrong and there is just too much white in the background. We didn't want to hold up R&D from making their switch to the Z any longer so we gave all of the parts back to R&D. Like I've said a few times, Josh and I and the rest of our marketing team are trying to gather information and pictures/video around the development of the kit. We don't want to cause any delays or get in the way of engineering. We will have a complete picture with all of the production parts laid out very soon.

No concerns at all. We have used this same air to water intercooler design for many years now and so have some of the largest forced induction manufacturers in the world as well as O.E. manufacturers. I will elaborate on some of the concerns/questions I have seen regarding air to water intercooling in another post though.

We did experience an issue on our Nissan Titan intercooler system that was causing the intercoolers to leak. That engine has a vibration to it which can break down the tube and fin intercoolers over time. To fix that we have switched to a bar and plate intercooler. Bar and plate intercoolers are extremely strong and durable. We have not had a single failure of a bar and plate intercooler.

On the 370Z we have gone straight for the bar and plate rather than trying a tube and fin first.

I will elaborate on the differences between bar and plate and tube and fin in another post. To put it bluntly, it is pretty much impossible to damage a bar and plate intercooler without some SERIOUS intent.

A new clutch/flywheel isn't "required" but it is HIGHLY recommended.

Phimosis

I know others have already asked and you guys didn't respond.....

Video?

Please?

Youtube?

If you told me no one video'd while you guys were testing at El Toro AFB, I wouldn't believe you.

We want to hear the sound. It's like the difference between a print model and a movie star. Hearing their voice makes all the difference. :-)

Kyle@STILLEN

The video is being worked on and should be released today.

serturbo

That really cost Stillen a lot in the Titan community. It shows how much of an impact the internet and forums can have on a company with respect to a specific community. I'm glad Stillen found a remedy to the problem.

Zguy

any dyno vids yet? I looked through the thread briefly but figured they would be on the first page if they were going to be anywhere at all.

stormcrow

Kyle -

Firstly, let me say kudos and congratulations. It seems you guys have done your best to put out a solid kit and I look forward to hearing some feedback from the soon-to-be new owners.

I do have a few questions, if you will indulge me. You stated that Nissan recommends "draw through" setups for their MAF. Granted, I will not argue the point that both F/I cars that you mentioned and all N/A Nissan cars do come with a "draw through" setup. But, the two F/I cars you mentioned are OEM turbo cars and their ECU programming has been stringently coded to accept the fact that the temperatures being read by the MAF sensor are certainly not the temperatures of the charge going into the intake post compressor. This is, arguably, not the appropriate setup for an aftermarket F/I application running on an N/A ECU.

When utilizing an ECU that is designed for N/A applications, how do you figure that it is better to run "draw through" as opposed to "blow through" when blow through gives actual IATs to the ECU to utilize via the MAF temp sensor versus the colder, denser air pre-compressor of the "draw through"? When the ECU believes the intake temps are 70 degrees, but the charge entering the intake is really 180 degrees, this can be a very detrimental thing.

Also, I take it you guys are using a recirculating bypass valve, as well, and no venting to the atmosphere or BOV? I didn't see anything mentioned about this in the release.

Thank you, sir, for your time.

G35s-Q8

One question in mind, when well we see this kit for the 2007+ G35 Sedan, and the G37 Sedan? I assume the kit well fit both cars, and the only difference should be the tune, and if someone bought the tuner version, then it should be no problem if it's installed on a G35 or G37 sedan.

Kyle@STILLEN

We really just need time and a test vehicle. We plan on test fitting this kit to the cars you listed as well as the 07-08 350Z's.

nuTinmuch

Hm. Another question -- how much stress is this putting on the auto tranny?

I'd imagine the force means that obvious wear will happen faster, but will it be an excessive amount? There seems to be a lack of upgrade-ability so far for it.

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nuTinmuch! -- Platinum Graphite 370Z -- Check out my Gallery thread here!

Kyle@STILLEN

When we say that Nissan recommends a draw-through setup we're not just using other vehicle's as examples, we mean that their engineers told us that the O.E. MAF sensor is not designed to be used as a blow through. We have a very good releationship with Nissan North America and we do talk regularly with their engineering team and this is what they recommended to us.

The NISSAN MAF sensor is not designed to read the air blowing over it because the sensor can not read air density. It only reads air volume. If you compress the air through the compressor then blow it through the MAF sensor the MAF is unable to read all of the air going by it so you're not getting an accurate measurement of air. Again, this information came from Nissan.

Yes, in order to achieve CARB legality we can not vent to atmosphere so we must use a recirculating by-pass valve. However, a blow off valve could easily be adapted to the kit if someone wanted that.

stormcrow

Wow, man. Either Nissan fed you some misinformation or your engineers misunderstood what they were told. Nissan uses a 'hot wire' type mass air-flow sensor which most certainly does measure the density of the air. It does so by denser air causing a temperature drop or pressure drop. This, in turn, requires more voltage from the hot wire to equalize the intake temperature with the temperature of the hot wire itself. Nissan is not using a 'vane meter sensor' which would measure only air flow instead of air density and flow.

The reason Nissan uses 'draw through' on the OEM turbo cars is for longevity of the MAF. That and because a MAF in laminar air flow is much easier to tune. Granted, 'blow through' designs will certainly diminish the life of the MAF, but not drastically.

BTW, if anyone decided to adapt a BOV to your kit, the tune would fall on its face and the car would probably not even idle. "Draw through" MAF setups do not allow for anything but recirculation. You are not a tuner, so I will let you have a pass on that one. But, I certainly wouldn't recommend it to your clients.

bigcloud

I don't post on here much, but this is starting to get annoying.

So are you a Nissan engineer? Have you signed a non disclosure agreement with Nissan? Stillen engineers collaborated with NISSAN engineers what don't you understand about that? If they have information you don't have to make a decision on the design of a product then why are you questioning the design? I mean did you have ANY hand in the development of the kit? If so then you may have a leg to stand on, but if you don't have any proprietary information from NISSAN then why are you giving them a hard time? Are you an engineer for some other company and you're looking for proprietary information through backdoor means? Something doesn't seem right here...

Kyle@STILLEN

That is absolutely what Nissan told us. Also a little FYI, one of the top tuner's for Nissan/Infiniti (UPrev) also recommends using a draw through MAF setup.

In regards to the car stumbling on its face with a blow off valve. You are correct...and incorrect...We are going to be using the Turbosmart blow off valve which is a two stage blow off valve. If you're simply driving around a parking lot then it will re-circ back through. When under hard driving it will blow off into atmosphere.

I might not be a tuner but I'm also not an idiot...I understand that by removing the metered air from the system that the car could potentially stumble and possibly die because you're taking the air away after it has already been metered...Don't need to be a tuner to understand that. I actually addressed this same question in the technical discussion thread.

tomnavone

I found this about the warranty


^^Thought this was funny

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