Nissan 370Z Forum - STILLEN 370Z Supercharger System

Nissan 370Z Forum (http://www.the370z.com/)

- Forced Induction (http://www.the370z.com/forced-induction/)

- - STILLEN 370Z Supercharger System - Announcement!!! (http://www.the370z.com/forced-induction/15836-stillen-370z-supercharger-system-announcement.html)

Quote:

Originally Posted by toner123 (Post 840940)

I am sorry to hear about your loss, and hope that it was painless when he/she went.

I am glade to hear about the performance part of your car and please keep us updated.
Frank

22 yrs old, music industry, loft in NYC, whores who love coke...I'm sure he went out on a quite a high. Can you tell I'm angry? But anyway - enough of that.

Forgot a couple of times just how tight I have to get these couplers, blew a couple of them open at WOT and that hasnt happen since my scooby days...YAYAYAY forced induction! I do have the ports drilled out for meth, but I just havent activated it yet. Probably wont until after the dyno. Make sure everything is 100%, which seems to be that way already.

Quote:

Originally Posted by toner123 (Post 840713)

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

Does anybody know if the two throttle bodies have different/isolated paths though the water/air intercooler? Or, is it just one big core and the air is separated to the two cylinder banks after? If it is not divided inside the intercooler, having uneven flow through the throttle bodies is not as big a concern until you relocate the MAF sensor at those locations. While Nissan engineers may have wanted the pipes to be the way they are, I doubt they had MAF relocation in that plan.

MAF sensors have really strange readings when there is a bend just before the sensor.

Quote:

Originally Posted by Airboy (Post 841384)

370Z / G37 Supercharger System Progress: Intake Manifold & Intercooler : STILLEN

That should shed some light. By the way, the only difference with the setup then what the picture depicts is that actual supercharger location (driver's side, not passenger) and the fact the intake has a Y-pipe for two air filters and that's where the MAF sensors plug in.

I wonder if the mixing of two different intake streams measured by two different MAFs in the Stillen system is causing any of the idling issues that a few people are reporting.

Quote:

Originally Posted by Nixlimited (Post 843900)

I wonder if the mixing of two different intake streams measured by two different MAFs in the Stillen system is causing any of the idling issues that a few people are reporting.

I was datalogging the other day. I noticed my 2 Maf's are reading slightly different from one another.

Quote:

Originally Posted by weiboy718 (Post 844280)

I was datalogging the other day. I noticed my 2 Maf's are reading slightly different from one another.

How much different. they are never going to read exactly the same thats why they have ranges.
Frank

Quote:

Originally Posted by DannyGT (Post 840787)

You dont want me from a 3rd gear roll...Especially from any point below 5k, LOL.

I know I have been quiet, but thats how you know i've been to busy having fun :icon17:

haha why wouldn't I? I was making like 9 psi below 5k. 6at like 4k. Not sure what you mean by that. Is it that your unit is smaller and spools quicker?

like someone said, get a dyno already! I gotta go get mine too now that it makes 2 more psi than it when I dynoed last.

I think i may be getting a dyno this monday. Lets keep our fingers crossed

Quote:

Originally Posted by Fezzik (Post 844850)

I think i may be getting a dyno this monday. Lets keep our fingers crossed

I'm getting one this Saturday

Quote:

Originally Posted by weiboy718 (Post 844280)

I was datalogging the other day. I noticed my 2 Maf's are reading slightly different from one another.

the stock car does that, not a problem.

Cataylitic fondue

Just a short update: I melted my Stillen HFC's during a track session. The cats had about 8k miles on them, 3k with supercharger. about 10 minutes into second session, after a redline shift, back to 5k, then off the throttle and "pop!" like a backfire, then the engine note changed and power was way down. I shut it off, called it a day, talked to the guys at Stillen (it threw a cataylst insufficiency code) then took it to a local mechanic. He took it apart. Both cats were melted. One core broke loose and was serving as a cork in the HFC's outlet.

I put the stock cats back on it and it runs fine. Maybe a little down on power, but not a lot. Has a less macho engine note too. :-(

Why do I post this? Because leaning out the a/f ratio is the most likley reason to get a cat hot enough to melt. Granted, I had prolonged, high rpm, full throttle use... but add the lean condition and it's gonna get real hot. The concerning part to this is that on the dyno, my car is pretty rich under boost all the way to redline. Is there something in real world driving - like fuel washout under high lateral g load - thats causing a lean condition? Just throwing it out there.....

Depending on how rich it is, that can cause the cat to melt as well. The unburned fuel hits the hot core and it causes the fuel to combust. Having this happen for a prolonged period of time makes the cat hot enough to melt.

This happened to a lot of guys running Berk and other brand's HFC's on the 350, now most people just run test pipes on FI applications.

You can get test pipes for like $180 now. Let Stillen know and tell them you want replacement TP's :D

i smell new tune and smaller pulley's with TP's