You're being spoon fed information readily available with a simple search.
You're about to invest tens of thousands of dollars in FI and don't even know the basics yet?

Search search then read read and reread. Know what your getting into before you start throwing money at vendors.

Good luck.

The forum exists so those of us with little knowledge can gain wisdom from those who have been "there and done that." Even with all the tips and pointers I've been given here (and they have been many and great) I still need to invest many many hours doing research. I am not ashamed to ask for help and I am sure that those with knowledge are happy to help.

So, is it a narrow band or wide band? 😜

thanks :)
Bart

Lol.. it's wideband.

I've read some posts that say the OEM sonsors are wideband, but the shop who built my car recommended a separate one. I don't remember the explanation. Considering the cost of a FI build, another O2 and having a bung welded into the exhaust was a drop in the bucket.

Thanks Chuck. Useful info. What say you elperanal. Was Chuck right in installing it?

thanks :)
Bart

This is my answer.

The STILLEN 500 HP Supercharged Nissan 370Z - /TUNED - YouTube
??????

the 370z has both narrowband and wideband O2 sensors. the widebands don't seem very accurate below 12, so its not very useful when you need to tune for boost.

your first post was hilarious, but by the 2nd page it was incredibly clear you had not done enough research, it went from "im going to prove all of you wrong and makes tons of power with stillen!" to "FI is expensive here, i can get the stillen kit cheap, should I do it and just be happy with whatever i wind up making?"

theres 9 pages here, I'm not sure why, stay NA. if you can barely afford the FI kit, what will do you if you hurt the engine?

Its very interesting how people hear what they want to hear or shall I say read what they want to read. I never claimed that I was aiming to reach that 555 horsepower from the GTM kit read and reread my post again and you'll see that all I said was I wanted to reach some nice horsepower and torque numbers. I quote "My second goal is to achieve some very nice WHP and Torque numbers that will calm all of the people sitting on the fence down." I don't understand what's hilarious about this. Almost 90 percent of the posts written about stillen are negative and all I'm saying is that I'd like to prove that the kit is really good and can make nice hp. Thanks anyways for chipping in after page 9 :-)

thanks :)
Bart

PS I hardly think that "my lack of research" will cause damage to my engine as long as I have a good tune and a good kit.

thanks :)
Bart

But it can't. It's a mediocre kit that can make mediocre hp, and we've seen as many blown motors with it as other options, so it's not even any safer. The only mitigating factor is that you're getting it cheap. It's not going to get anyone off the fence. We've seen build after build with that kit underperform. It's a substandard option designed for people who have to deal with CARB. You're a special case since you've got some cost issues the rest us don't have to deal with.


You need to have a long talk with the shop that will be installing and tuning your kit. They're the people that need to be helping you. The Stillen has many cut corners that make it less reliable than other options, so you're already not getting a "good kit". Lack of research can end up with a blown motor, so talk to the tuner and take all of his advice. Don't pick and choose which parts to buy, do everything he tells you.

Chuck, your advice is always solid. I probably trust the people here on the forum more than the tuner (lack of experience.) The mechanic I trust fully; however, he doesn't know of the shortcuts you speak of. This knowledge is gained through experience. I am constantly being told to do research. I thought that forum chat was part of it; however, many people are grudgingly giving it. What are the shortcuts you speak of?

thanks :)
Bart

We've explained the issues. The maf piping. The intercooler. The undersized injectors. The canned tune. The blower itself is a good unit. It's all of the Stillen stuff around it that makes it underperform.

I just need to move out of California...

Chuck can I ask what you mean by undersized injectors? Are you talking about for trying to make 500+whp? I'm asking because we didn't need larger injector for the tune on my car.

What are your idcs? They use smallish injectors. Running a too small injector at a high idc is not as good as running the next size up injector at a more reasonable idc.

yeah a local guy I know has the Stillen kit and they were running 95%+ IDC's on the injectors that came with the kit during the tuning process so they couldn't maximize power.

He had to 'upgrade' to 600CC injectors, which is absurd since the stockers are ~400CC.. how tiny of an injector did Stillen include??? lol

My kit came with 600cc injectors.

Did you buy the kit new or upgrade it in any way? It didn't use to be 600cc.

Yeah the local guy I speak of got his right at a year ago I believe and it came with the 540's or whatever.

They may have bumped to 600's since then.

Also, if you got a "tuner" kit and then had your installer/tuner get the injectors and pump, that would explain why you have 600's as well.

If you get a custom tune instead of using the stillen tune doesn't that void your warrant?

Yep it does.

Chuck... the kit comes with 600cc injectors.

Did it always? Quite a few people had really high idcs on their injectors. Hopefully the improved that part of the kit.

IDK about that.
I have a new kit on my car and it came with 600cc injectors.
BTW, I do not experience any of the problems that are constantly mentioned here.
The kit max out at around 460 RWHP, which incidentally it's not very far of what the stock motor can take safely.
The kit as it comes makes 409 RWHP, but the fuel tables shows a very rich condition, then when it's properly tuned goes to 440 RWHP, on a bone stock car (factory exhaust included), not bad at all for a sleeper.
Realistically our motors are safe up to 500 RWHP with a good longevity ahead.
If we like to push the envelope further, then a short block is in order, a TT set up, big intercooler,etc,etc, and 700/800 RWHP is attainable, but I don't think the tranny can take it.
Back in 1992 when I had my second 300ZXTT, I max out the package with stock internals and the car makes over 500 RWHP at 2 bar, it runs very reliable with no breakdowns,but the tranny did not like 473 RWTQ, so powershifting was a big nono.
However I'm always have a lot of fun with the Z cars.:ughdance:

Very nice HP. Is your car manual or auto. I have installed Stillen now headers and cats. Should I return stock headers? The cat's material inside tends to break apart. The question is whether to clean the interals of the stillen cats out and leave them as test pipes or to return stock cats.

thanks :)
Bart

Yeah but the gtm stage 1.5 or 2 kit makes 50hp more than that, and the vhr should take closer to 550 s/c or more safely because the torque comes on more even. As for the tranny you cant compare the 6 speed to the old z32 5 speed. The gearset in our trans is huge like 50% bigger than a mkiv supra tt tranny huge. There is a reason the thing weighs as much as it does. I've only heard of two non synchro related failures on the new 6 speed and both were near or over 700whp, and I know there are cars running even more than that.

Edit: Also both failures were input shafts breaking off near the pilot bushing so the could have been related to the clutch.

What kind of dyno are those numbers from? For an unmodified kit, that's pretty high. What does a stock 370 put down on that dyno?

Sorry to hijack😏 but should I remove stillen headers and return stock headers? Also the stillen cat's material inside tends to break apart. The question is whether to clean the interals of the stillen cats out and leave them as test pipes or to return stock cats. Stock headers and stillen cats? Stillen headers and stock cats? Stock and stock or stillen and stillen?

thanks :)
Bart

It may come with 600's now, but a year ago it DID NOT come with 600's.

I know this for a fact.

http://img.tapatalk.com/d/13/11/21/ra3e5yze.jpg
This is the list I was recently sent. My kit is 1 yr old.

thanks :)
Bart

Damn, guess my friend got ripped off by Stillen. His kit came with ~540's.

When they go to tune your kit, if you're in the ~410WHP range and your injector duty cycles are over 90%, they didn't send you 600's, no matter what that checklist says.

What interest would a world renowned company have in ripping your friend off? I doubt it.

thanks :)
Bart

He wouldn't be the only one based on some of the IDCs people have seen.

:iagree:

Let's not go crazy here.

Hey Chuck. What about my header/stock question?

thanks :)
Bart

The almighty dollar?

I dunno, it could have been an oversight, maybe 540's are supposed to be for the 350z kit or something, no idea. I just know his came with 540's.

I'd email Stillen and see what they recommend. You may not be able to make enough boost on the supplied pulley if the headers and cats are too free flowing.

Dynojet424xLC2.
I will post it the actual page of the report from DSPORT
This is after SC install, no tune.
http://i135.photobucket.com/albums/q...psaf9c59b1.jpg
This is with tune, and cat back.
http://i135.photobucket.com/albums/q...psa5899d94.jpg

Mu car is 6 speed manual, I have stock headers and cats.