:rock:

+1 :tup:

Nice - more options

I really agree there, we have been very demanding oon both companies and they have handled it pretty well. Thanks Stillen and GTM.

SC with AWD
 

I could use some input about how the SC might work on my 09 G37XS?

Its the 7-speed auto with AWD.

I'm guessing that I will not see the same numbers as on the RWD?

Thanks!

Snipes...

Thanks for the answer's Kyle, i think if you offer the manifold in black on the basic kit, maybe you can offer it in Red as an option with additional cost.

Also i'd like to ask you, for people who lives in extremely hot country, for example the tempreture in my country gets to more than 50c day time, and at night it drops to 44c, basicly it's a living hell, would you offer larger intercooler if a customer asked for it?
Aslo i would like to ask you, are you going to offer new larger size radiators? i would love to see 36mm+ radiators for the 370z, G37, and the Sedan of course, and btw try and make this kit fit the 2007+ G35 Sedan ASAP please.

We should have an aftermarket radiator option available here soon.. keep in mind it's not as simple as previous designs as the A/C condenser is now part of the radiator itself.

josh, which aftermarket radiator would you guys recommend for the 2-3 of us that eliminated our a/c completely? hoping to drop a few pounds there... thanks

Video??? We need to hear this thing already, cant take that long?

Stillen, what did you guys do with the crankshaft ventilation lines?

Looking into that as well.. we have had requests.. I'll see what info I can track down..

Unfortunately we don't see very many of the all wheel drive vehicle's out here in So. Cal so we can't confirm fitment yet. However, I don't see any reason why the kit wouldn't bolt up.

You will see less power for two reasons, 1) less efficient drivetrain and 2) higher elevation. Living in Colorado I'm assuming you are above sea level?

Both of these situations are currently affecting your car as well so the percentage of power increased should be about the same.

The radiator that we are currently working on is actually the same size as factory due to the limited space. We don't have enough room to really expand the radiator but we are using a B tube construction which is about 20% more efficient at cooling than the standard radiator construction.

You should know by now that we always have racing on the mind Travis! The new radiator that we are working on uses a two piece construction for the radiator/A/C condensor. So, for those of you who have already stripped your A/C...Just don't install the new condensor and you will save even more weight.

You mean, crankcase? :p

Come on... hehe no I meant the A/C lines that go to the crankshaft to keep it cool!

Yes the crankcase, same thing, you know what I mean ;)

In order to achieve CARB certification all ventilation hoses have to re-circ back just like factory. Can't vent anything into atmosphere.

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.

Cool, thanks.

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.

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.

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.

Here's video with some of the clips we had of the two cars, testing, dyno, etc... look for some in-car 370Z video coming soon..

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.

Impressive that Stillen has achieved all the plumbing to fit under the factory hood!

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.

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.

Thanks for the video!

Hey if its good enough for an ex LeMans driver, its good enough for me.

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. :)

holy smokes man... looking good... wow... its really cool that steve still is an active part of the design / testing process - I am really impressed with your company

Kyle - One other request. Loving the videos. But, I was wondering, could you post one of the car at idle without music? In the past the Vortech blowers have sounded like "rocks in a blender" and I was curious if the V3 sounds the same?

Thanks!

Great video, and as the others have said, hell, if Steve gives the stamp of approval, its good enough for me.

I'd recommend a valve body upgrade for sure, and probably a higher stall tq converter while you're at it.

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...

Seriously? Paranoid much? The simple fact is that Nissan uses a 'hot wire' mass air-flow sensor and there is no secret or "inside information" on how 'hot wire' mass air-flow sensors work.

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.

I dont think any of the information he's talking about is some sort of secret. He does sound knowledgable, I just dont know if its all accurate when referring to the 370Z. Either way - they are informative questions and I would like them answered because I didnt really know how the MAFs in our cars worked. Not a big deal...

EDIT: Thanks for answering that so fast Stillen! LOL

Thanks for the response. Hmmm.. I guess I need to pose the same question to the guys at Uprev. I truly would like to know how tuning for a 'draw through' setup on an OEM N/A car with an aftermarket F/I kit is better than tuning for 'blow through'. I do understand the advantages of 'draw through', but the tuning is what concerns me. The IATs are certainly different (much hotter) than what the MAF is calculating for. This is a fact.

Truly, I wasn't implying that you are an idiot. That whole tone/inflection thing. But, even if you use a two stage BOV that recircs as lower pressures, you could still achieve a rich condition when it vents to the atmosphere. Again, any BOV in a 'draw through' setup is certainly a problem.


EDIT - I don't want my question of does this Vortech blower sound better than its predecessors to be lost in the dialogue re: MAFs. Can we hear that bad boy? :)

Not paranoid, but annoyed at the fact that you're trying to discredit the design or find some flaw in it. I am an engineer and can see what you're trying to do. Granted you do sound very educated on this subject, but what are you trying to accomplish? Other people that do not have your knowledge will not fully understand what is going on. Are you trying to contribute to the community? In what way? What are your intentions?

You may be right DannyGT, but if you read into his questions from a systems engineering point of view you will see where he is coming from.

It's not about discrediting the design or finding flaw. It's about addressing what are obvious (to me) fundamental design issues. These issues can lead to problems for the buyers. If Stillen can give solid technical reasoning as to why they are going against MAF tuning 101, then I will be satiated and happy to have learned something in the process. I am not a tuner, nor do I purport to be. But, I am educated as I have been spending my hard-earned money on modifying cars for years. Granted, others may not quite understand what I am asking, but if there is a technical issue with the safety/longevity of the kit, then most will walk away understanding this if Stillen cannot readily explain it away.

Again, as I have said in multiple posts, I am trying to help the community by making sure that vendors are honest about the wares they are hawking. If this kit is measuring air temperatures pre-compressor of 60 degrees F and the temp being blown into the intake is post-compressor and 200 degrees F (just an exaggerated example), the ECU is receiving the 60 degree temps and compensating for this instead of 200. Can't you see the issue and the danger? Wouldn't you want to know this about a kit you were going to spend 6k on and put on a 40k car?

And, once more, just for clarification. If Stillen can answer these questions with solid technical answers that are legitimate in nature, I will certainly understand and be happy to have furthered my knowledge.

Too bad the OEM 370Z ecu doesn't use a speed density-based system, and we could ditch the MAF all together :)