STILLEN 370Z Supercharger System - Announcement!!!

Osiris

there is already...it's in the rear of the manifold

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Staples

MAF sensor is what we need. If there's any change in voltage or just a small amount of debris that gets on it, the car goes into limp mode. That's how fragile they actually are. Plus they're pretty expensive. We'll have to see what UpRev says.

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'08 Infiniti G37s - Forced Induction Fed

G37Sam

From what I know, and correct me if I'm wrong please, MAP sensors' reposnse are more linear and can cover a wider range than a typical MAF sensor.

A MAP sensor also does not depend on orientation nor will obstruct flow, whereas in a MAF sensor, its placement and orientation is very crucial

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Airboy

To use a MAP (Manifold Absolute Pressure) sensor to determine air mass would also require a manifold air temperature sensor, and recoding of the ecu logic. Not a simple task by any stretch


From what I can see in data logs, that sensor doesn't read much above 0psi.

Nixlimited

That's what I said regarding position--blow-through is after the compressor. However, I did not know that Stillen was draw-through. That may be part of the problem. If the IAT readings are way off then it would not surprise me if there were idle issues.

That's right. What would be nice is to take the IAT from the MAF along with a MAP meter and black-box it so that we got an equivalent 5V output which could be fed back to the ECU as a surrogate MAF reading i.e. spoof the MAF voltage using a MAP and IAT sensor. I imagine it would take quite a bit of mapping to get right, but getting rid of the MAF sensor would save a lot of headaches.

weiboy718

All I can say is whenever my IAT is above 90-120 my car drives like crap and detonation will show, in cooler climates it performs very very good!

Fezzik

I gotta ask. How about relocating the MAF sensors. THink that could help solve some issues?

Staples

It's in the works, unfortunately it's easier said then done. The way the piping is setup makes it next to impossible to evenly distribute air to each sensor.

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'08 Infiniti G37s - Forced Induction Fed

toner123

why not put them right before the intake manifold? where pipe turns into two
Frank

weiboy718

right! you can't just put 2 MAF's on the single pipe. it's gotta be separate.

Airboy

Air, like most things, doesn't like to go around bends. Air flow will be higher at the "outside" of the bend. With the split of the pipes before the throttle bodies, I suspect more air will flow through the pipe closest to the firewall as the airflow doesn't have to "turn" as much.

This is an exaggerated illustration, with an abrupt 90 deg bend but it shows the general idea.

toner123

Yes I understand this. Air is like anything else it is going to take the path of least resistance. But if you look at the design of the two tubes. there is no sharp bends and it might divide easily believe it or not.the resistance on the two tubes looks about the same other then the one tube is a little longer and i can see that might cause issues but the shorter tube bend comes first so it might equal out. My point being is that it is worth a try if people aren't satisfied with the draw through. Also it is not that hard to do. I already thought about how to do it with weiboy. Now the only thing that doesn't make sense to me is that stillen did this design because the NISSAN engineers said this is how it should be done. Not like they did this because it was a short cut. Also to my understanding this is how the GTR system works also, so why isn't that car having maf sensor location problems? These are general questions I was just thinking about.

Josh or Kyle I know what you guys think about the draw through maf sensors but do you think it is possible to make a proto-type tube that mounts the two maf sensors after the blower and see how the kit performs. I am almost positive weiboy will have no problem being your tester. Hell I will help pay for it if it will settle people down.
Frank

weiboy718

did you purchase the kit? i was really thinking about parting mines out seriously and of course you're the first i've got in my mind to sell.

RCZ

I hit 10.2psi way before redline just now. Anyone with a GTM SC wanna play? Come on, 60-160 run?

toner123

Congratulations?