Cool, I took off my HFC cats today and I dont know if it really is but I feel like I have more low end tq now. The wheels break loose easier now with the stock cats back on.

I wonder?
 

Since posting this morning I got to thinking about my reference to manifold pressure as it relates to air volume passing through the intake. I inadvertantly stated that the Stillen kit and GTM kit should be producing the same HP/TQ at the same manifold pressures. However, I forgot that Stillen is using their own intake manifold and GTM is using Nissans OEM manifold. This may explain why the GTM kit is making more HP/TQ at the same manifold pressure. It's entirely possible that when going from the prototype manifold to the manufactured manifold something changed and the manifolds supplied are more restictive than the stock manifold. Therefore, the manifold pressure of the Stillen manifold would reach 8 psi with less airflow passing through it than the Stock manifold. Less air volume less power.

Anyone want to test this theory by removing their manifold and then porting and polishing it as much as possible and then reinstall and see the what the results are? :rolleyes:

^That sounds entirely plausible, nice job thinking outside the box on this issue! I do have a hard time seeing how the Stillen manifold can be more restrictive than the OEM version but it could also upset the way the air moves through the plenum and into the intake runners.

OKC, although you bring up a good point, RCZ's success with this kit leads me to believe that the issue with this kit is solely in the tune and Stillen's mission to remain CARB legal.

I don't like this kit mainly because of the intake manifold. I hope they did not put velocity stacks inside the manifold. Anyone have a picture of the inside?

Maybe so, but then why is LateralG'z car producing almost the exact numbers on the same dyno as my car when I have Stillen's tune and his was custom tuned? Also, isn't GTM looking for CARB certification?

It may actually be a culimination of the two, which I believe is the case. As I said earlier I think it also comes down to "the dyno" used, it's setup, the car's setup, how it is strapped to the dyno, etc. Everyone's numbers seem to be all over the place. And since most tunes were accomplished using Uprev which if I understand correctly does not allow you to change very many parameters, compared to say SCT for Ford, then the numbers should be close. I've seen this exact thing on Mustang forums when I supercharged my '01, there were people with Vortech's kit that were getting very different numbers.

Might I also point out that most of the results I have seen on this forum have come from Stillen's kit. How many people on here have the GTM kit to compare their results to Shumby? I am curious to know how consistant the numbers will be with the GTM kit as people from all over the place are using different dyno's and GTM's canned tune vs. custom.

It's going to be interesting to see how this all pans out over time. Myself, I'm going to keep tracking and comparing dyno graphs as people post them and look for the consistencies or inconsistencies of canned and custom tunes.

I don't mean to be a ****, but what I meant is that I in no way feel bad for someone who comes in here with an attitude towards people who are trying to make things right. If someone makes a dumb joke at me like "what math are you using, stillen math?" implying that I'm a dumbass when I'm only trying to help, then you know what, f them. You knows know I don't sit quietly.

Also, Chris from wheels direct will attest to how my car is performing. So Shumby, nice try. Oh there's also that little thing called a dyno sheet with dyno videos. I'm not sure what else you want.

What this boils down to is there are usually 1 or 2 cars that hit the desired numbers from companies like Stillen when they do this whole dyno queen advertisement. In GTM’s case they showed lots of dyno plots ranging from 420-460whp. Showing difference setups/tunes…

I also believe there is more to RCZ's car than people know...Whether its fuel, dyno adjustments, just a ridiculously aggressive tune (which is OK as long as you have the supporting mods)...but when you officially/unofficially become the Stillen spokesperson I'm sure there is a certain interest in making sure that you attain these numbers.

Additionally, I still think its ****** up that you need all these supporting mods, along with other members to either 'just come close' or in your case exceed their numbers...when they claimed they did them with what? CBE?

Give me a break...It’s easy to say they are trying to help him out AFTER they took his 6k but its another to have 6k no longer in wallet and have to deal with multiple tunes and drivability issues and still not make the power they advertised...

And now Stillen is MIA on the forums, which is very odd to me for a company that supposedly knows about marketing. They are letting the problems be defined by the forum masses and look like they don't care about the people having problems. Who would order a Stillen kit today after reading this thread?

That is my huge issue with this whole thing, along with I'm sure many other people. Stillen made it a point MANY times over to point out how they go the extra mile to correct issues and make things right and such with their QC processes and here they are not saying a word.

Of course theres always the chance they just don't have news right now and are working hard on a solution to appease the masses rather than giving us all BS excuses or promises that they can't yet deliver on.

I really do care what you think. tell me more.

I defend their products because its the products I have on MY car. When you say they are crap, you're telling me what I have on my car is crap and so I feel like I have to say something about it.

You are right, my car isn't exactly the same as the rest of the ones being tested here. I can tell you exactly what went into my tune and it might shed a little more light. This is the SECOND time I will do this too, I did a few posts back already.

- 93oct: I can be a little more aggressive on timing than Stillen can on 91oct gas.
- Headers + HFC: Stillen had to use stock pieces there, their tune is for stock parts to meet CARB emissions, not for high numbers.
- Light flywheel + light pulley: Between these two, they release some HP.
- Custom tuning: as you all know, my car is custom tuned by a good tuner. That means that the tune will work great on my car, but might not work as great on the next persons.
- Racing oil cooler - will keep temps down

I'm on my 3rd license plate bracket from them (where they go in the tow hook location so you don't have to drill the bumper). They managed to F-up the first one - it was for a 2004.5 350z and Nissan had changed the diameter of the hole. They knew it, but continued to ship out the wrong one.. The next two have fit well..

So I'm probably a :nutswinger: with my <$300 spent with them over 6 years ;)

I had hopes for this system. I was very happy with the Vortech kit we had on the 350z (after pulley change, HFC, CBE, and tuning). At $4200 for the kit + the addons, it was a good value.

The sad "joke" of this situation is this is the more expensive kit this time around. GTM's supercharger kit for the 350z came out wildly expensive for minimal benefit over the Vortech. Now GTM has the cheaper kit while producing much better overall results (so far, not that many kits out there)..

UpRev allows you to do almost everything.

Up to 5 Maps on cruise control equipped vehiclesIdle RPMSpeed LimiterElectronic Throttle Control to achieve Wide Open Throttle at all speeds.Rev LimiterDTC disableAFR TargetsFuel CompensationIgnition Timing AdvanceCam Phasing for equipped vehicles.MAF transfer functionCranking Enrichment and Ignition AdvanceInjector LatencyK Fuel MultiplierIntake TempCalculated Load vs. RPMMinimum Effective Injector Pulse Width

UpRev is NOT a limiting factor... You can do everything with it on the VQ platform.

My 2 cents bro. :tiphat:



History is repeating itself with Stillen again.
Everyone ditched them in the 350z community for tuning reasons as well.
Look at all of the my 350 z forum stories on them.

I've benefited from Stillens Headers, Intakes, and HFC's.... But when it comes down to their FI options, the research shows to stay away.

Uprev is trying to provide a tune that can't be changed in certain areas as a requirement for CARB cert. Or have I read this wrong? :confused:

I didn't mean to imply that bro, sorry.

I was just stating that UpRev is a really solid tuning option for our engines.

True, but somewhere between Uprev, Stillen, and trying to achieve CARB cert, the game got a little more complicated. Both Stillen and Uprev thought they had a tune that met all the criteria but something obviously didn't jive with this setup. Welcome everyone to the world of being the first! :D

Keep your post ON TOPIC
 

Everyone please keep your posts ON TOPIC. Reply professionally and refrain from personally attacking another member. If you have a problem with another member, take that OUTSIDE the forum (via email or aim whatever). Posting in this forum is a privilege NOT right. I will take that (posting privilege) away if I see personal attacks or name calling.

Stillen, from what company to another, You need to come back in here and start answering people here. I respect you guys and i know that troubles like this happen, BUT you need to start telling people what is going on.

Help everyone out by at MINIMUM giving an update. I dont want to see you guys as those companies giving all the updates when they are trying to sell something only, and then neglecting when the problems start. You guys are better then that.

As of right now most of the people who has this kit can drive their car with this new tune. Only problem is it needs more power on higher rpms. I'm sure Stillen is trying their best to refine that latest tune for everybody. It's probably best to give them a call directly if you want more answers.

CARB's a bitch aint it just imagine if they could just rock a rich running, safe, high power tune like most shops can give you and emissions be damned

Its not for me, I am just saying. That last thing I read, was someone actually got the new tune and his car was still running oddly.

I hope they get this fixed, b/c we are getting real interested in it, and we need something that attracts a little attention to the car at shows. THe gtm is just way to hidden, and I am sure like I would be, if I spend my money I wanna see what I spent my money on everytime I open the hood

Not sure I follow? So your at a show, and all you want is this massive chrome housing under the hood? So a twin turbo setup would be worse at a show? A show is just that, SHOW...not go. Most are trailer queens and/or gaudy body kit conventions.

How about this...

-People will see that massive FMIC (if you want), which yours wont have.
-You can put a nice info board next to the car which immidiatly catches people's eye for being something that 'looks' important.
-From reports it sounds like you can most definitly 'hear' GTMs charger/valve which would get people pondering.

So ya, its kind of a lame excuse. The fact is GTM is a fab house style company that gives one-off style type quality in their products. This is also one of those cases where your not getting what you paid for, where as your getting more so from GTM. Stillen at this point just feels like an APC style company where its just about getting to market as quickly as possible for mass production. Two very different strategies.

Good luck.

SurelyTurbosInduceLessLeadtimeEveryoneNo!!!!!!!!

got a dyno set up for tomorrow...after hearing two people do bad on this dyno. i am expecting the worse...so much drama in this thread. I am happy that my car is running fine but when i view this thread i am just SMH the whole time.

Ya the visuall diferances between the 2 kits is huge. If you want to have all your engine mods in your face then Stillen is the way to go. I personally wanted the stelth look. I even managed to get it accross the border without paying duty on it. although i drove really slow to and from the customs booth. lol


But the looks of the 2 kits is subjective. The real issues lies in the quality and delivering what was advertized. As far as I can see Stillen has not produced the numbers they advertized. And seeing as this kit is out for about a year now i would think the tune should be fine tuned by now.

I have been to both shops and I definatly get the feeling that stillen thinks they are bigger and better. I even showed them the CF stearing wheel cover Danny made for the G37b and they just sort of laughed at it like why is a guy so small even making this. I was not the only one that got hat impression my dad did too.

I hope that stillen is working hard on this tune still and gets it right for you guys. I just hope they have not said screw it and moved on to the next project they can make money on

huh?:confused:

^^^ ?????

he's huh"ing you when you said their kit has been out for nearly a year. fact is it's only been officially out since late June early July.

well their HP clanmes and test car is what i am talking about. Sorry i see i was a bit unclear

What are you doing in here Captain Canuck, lol :stirthepot:

keeping it civil and too the facts

Has anyone checked the local hospitals? I hope Kyle is ok - we just haven't heard from him in so long, I'm concerned.

Come on its only been a month. :shakes head:

Stillen is Still en denial. :icon17:

Hey Guys,

Just wanted to jump in here real quick and let everyone know what's happening.

As we have said many times, we are working directly with our customer's to get their vehicle's squared away. For the most part, the customer's have been extremely patient and cooperative and we really appreciate their efforts and desire to work with us. We want to work directly with the customer's because we have seen some cases where the issues were caused by the installer of the kit. For example, one company chose to install the kit using materials that we did not supply. This caused issues that could not be traced until the car was sent to another shop. The kit itself was perfect, the shop doing the installation chose to do something on their own, and it caused some headaches.

Additionally we know that the most important thing to us is that our customer's are satisfied. As you have seen, any vehicle that was having an issue and we were able to correct, the customer has come back on and said how happy they are with their car. That is all that matters to us. Also, there have been other customer's who did not experience any issues at all. The kit went on exactly as it should, and worked flawlessly from day one.

Where does it all stand now?

Weiboy and Tomnavone have both reported similar experiences. So, this past weekend, I personally flew up to San Francisco and picked up Weiboy's car and drove back to our shop. Our engineers are currently working on this car.

Also on Saturday we had a customer's vehicle picked up and delivered to UPrev. UPrev will be inspecting that car thoroughly, through the installation, and the tune. This car is experiencing the same symptoms as the car owned by forum member Osiris. Those are the only four cars that we know of with unresolved issues.

Unfortunately the internet forums make it look like basically everyone who ordered their kit experienced a problem. The truth is, out of all of the kits we have sold we have only had a few issues. Some of them were not related to the kit, or the tune. They were 100% the installation. The majority of the issues have been resolved, and the remaining cars are currently being inspected and finalized now.

In regards to STILLEN rushing something to the market. That could not be further from the truth. During our testing and development we used a lot of different vehicle's. We did the initial development on the red Momo G37. Then we switched our prototype kit to our silver G37. Then we installed a kit on our red 370Z. Then we installed kits on two production 370Z's, one auto and one manual. Actually, G37mobbin wanted us to ship his kit to his installer but, because he owns a G37 sedan, we told him that we would not ship the kit until we had done the installation ourselves. I personally have put thousands of miles on our test cars. Steve has also put thousands of miles on the test cars. Anyone who was at Zcon in Tennessee saw Steve and I take our red 370 out on the track and blast it around in weather that was INSANE!!! 95 degrees with 110% humidity. The car performed flawlessly the whole time.

"Weiboy and Tomnavone have both reported similar experiences. So, this past weekend, I personally flew up to San Francisco and picked up Weiboy's car and drove back to our shop. Our engineers are currently working on this car."

Well that certainly puts the smack on those who are complaining about bad customer service.

Uh, hello!!! How convienently you forget about mine which is supposedly experiencing the same problem as Weiboy's and Tomnavone's. Please include me in your next list because i sure as hell don't want you guys to just write me off and forget about me.

PS: 3 months and still counting.

Sorry about that you are 100% correct. Actually Josh just reminded me about your car. Please accept my apologies. Apparently your car is experiencing the same things as the car that is now at UPrev. I apologize for the inaccurate information and I will update my post. So there are four cars with remaining issues.

Kyle,

Thank you for the update. It was needed as people here were going crazy and started making rather bad assumptions about Stillen.

I absolutely makes sense that some people are experiencing issues and there is no doubt that Stillen took all necessary steps to improve and fix the issues.

We thank the Stillen team for that.

That being said I believe quite a few people here would still like to have an official response to the performance not being what is advertised. We all know that Dyno's are different, temperatures and humidity also affect numbers but it seems some people here report 30% less HP gains on normal temperature compared to the advertised HP gain. Any thoughts on this and how many people it may affect.

Thank you so much for your help,

I'd venture to say thats the big gripe most people have and that issue was not touched upon at all in the last post. Hopefully(most likely I'm guessing) it will be addressed once they have all the assorted tune issues figured out.