yes and no warranty if u get it tuned by some else than stillen

I am wondering if the issue has something to due with a special version of uprev. Might have some code errors that are effecting the tune and how it is controlling the ecu.

that is part of the problem because they had to use a newer software of uprev...The head tech of Uprev is down @ Stillen's facilities as we speak since Monday. California SMOG/CARB wants to use a tune where the end user can not adjust the tune. so there is stilll a ongoing issues that are going on. The problem what i am dealing with right now. When the car is in Tiptronic the car is fine. When the car is in drive and goes past 3k rpm it goes into limp mode. I forgot who else is dealing with the same problem. Just some of things that were told to me.

I have the same promblem among other things that i described a few posts back with my tune. Where did u have your install?

Damn! Consider myself being very lucky.

Sorry that you guys are going through all these headaches.

Hopefully they can figure it out without having to drive down to stillen like u and phimosis to get it fixed

Yeah! I feel you! Driving down there not knowing what kind of risks you're taking in damaging your engine is not a very good feeling at all. My butt kept on squeezing together whenever I felt the lag and hesitation lol.

It's weird how you're having issues and you're an 6mt also. Most of the people are 7at that is running into problems.

Stillen was much more active in this thread before kits started shipping..

Is Stillen and their dealers still selling kits? They should have a freeze right now on any new kits while these problems are worked out. I hope this is the case.

I'm pretty sure they're gonna come up with something very SOON.

have you gotten an independent dyno after the fix?

Not yet, my local tuners dyno is down and I'm waiting for him to fix it then I'll get it dyno

i am fortunate and unfortunate at the same time but my car is at Stillen. Fortunate they have it so they can work on it on-site...unfortunate because my car is 400miles away and havent seen the car in a while.

Hopefully with your g37 and phimosis 370z 6m down at stillen they will come up with a fix soon.

You don't check your pm much do you? Lol

The kits are on hold I due know that, which is BS because the kits can installed and the tuning can be sent later.

It does sound like Stillen is getting things handled correctly with the Uprev people involved. I like uprev but i have my complaints about it so when christmas comes, this guy is looking at Haltech or something else that gives me a lot more control of the ecu.

I think it will all be sorted out in due time. The lag, bog, black smoke and unburnt fuel
smell are no accident. It's from setting the mixture rich.... Mine was running at 11.1:1. Ignition retard is also involved in that bog/low torque output setup and sends unburnt fuel into the exhaust. When a car runs like that, it runs cool and without detonation. It's "safe", but is low on power and has poor throttle response. If you leaned it out to 12.5:1 and advanced the timing 5 degrees or so, the car would spring to life and be a lot closer to emissions targets, make more power, have better throttle repsponse and get better gas mileage. Independant tuners are tuning the car this way and having good results. Like RCZ, right? What that tells me is Stillen either has evidence that damage is occuring under high rpm + high boost conditions when mixture is leaned out and timing is advanced, or they just suspect it and are afraid to lean it out for fear that someones engine is going to blow up and they get blamed. That becomes a PR disaster. If someone 's supercharged Z blows up with a stillen kit, but a tune from someone else, they can easily deflect blame and say it was improper tuning and say that none of the cars that they have tuned have had problems.

Thanks for the update seems stillen is being very quiet about this problem and when I should expect a new tune. They told myself and my shop its safe to drive but I decided last week just to garage my car and not drive it till they figure this out. Is your car still down there at stillen?

I agree 100%

Looks like its supporting mods only for me this year :shakes head: Hopefully all is sorted out soon.

Dyno scheduled for Tomorrow at noon. Will try to have the results posted a few hours following. So far just doing a little initial tuning to help get the car prepared for tomorrow but so far so good.

Are there people tuning FI Z's at 12:5.1 at WOT? on pump gas?:icon14: or was the comment in bold based of the timing advance thoughts?.
I agree the timing would make a difference to drivability where able to add it in, but 5 degs on pump gas with a lean mixture would generally cause problems, even as boost builds.

Personally Id be happy on E85 to add in 5 degs and run 12:5.1 flat

Not knocking any of your post but a little surprised.

Any one got some logs yet of these cars they could email me so I could graph them up, Id be interested to see the timing curves and fuel targets etc, I can post up data in seperate thread if anyone is interested in seing it.

12.5 A\F would be way too lean for a forced induction engine especially one with high compression like our engines. I can see that mixture if someone was running C16 race fuel.

^exactamundo dude +1 thats why I would run 12:5.1 on E85 ;-)

Id be happy with 11:0.1 to 10:8/5.1 up top on pump, depending on timing and boost, personally I have never seen an EGT guage on a Z as yet but that is soo helpful when tuning FI.

This was my exact feeling on the kit as well!!....I am truly impressed with the power/Fit/Finish of this unit....great job Stillen!

-Jack

Agreed except that small tuning promblem with the cars that have this kit and tuned by stillen are inoperable. Besides that its great to look at my car with this kit installed. Sucks i cant drive it cause stillen cant figure out how to tune our cars without blowing up the engine. Cool to look at tho.

Chris & HP Logic

Just to be clear, are you guys saying that your cars are producing figures as per those advertised by Stillen? If so, can you please post dyno results.

I'm not trying to to be smart, I genuinely want to know.

Bad news bears, we are having some tech. issues with Uprev with my ecu. The kit is great, sounds amazing, makes boost really early but we are having Uprev software problems again with my ECU. We pulled the plug till uprev can get some answers. I don't know how Chris handles this type of BS from Uprev. This is the second time they have cost him a bunch of money for software issues. He has done such a good job only to have this derail the build.
Will keep update when find something out

so is the car even driveable as a DD?

oh no's!

that ******* sucks!

I thought Stillen was using a modified version of Uprev? So not directly Uprev at fault here.

We are using the normal version of Uprev, and doing a custom tune. This particular ECU ROM has a few bugs in it.

Yes it is fine to drive DD, it is actually a little rich in open loop or non load conditions but why drive it when or if I need power I hurt the motor and things are not running correctly. The car under any load is extremely rich 9.5:1 to 10:1. We hit boost a little and it came on early so that is sweet and makes me feel a lot better about the kit, but the Uprev fuel tables and left and right bank were going hay wire and were miss labeled. Uprev is pretty much on my **** list. But on another Chris did a great job, the kit looks great, the little boost we hit came on nice and early so I am now dying to have the car finished.

Tell me about it

Sorry to hear this. I feel your pain.

I didn't mean literally that is the number that tuners are sticking with throughout the entire rev range and under any boost condition. My biggest complaints have been about driveability at low rpm range where not much boost is being made. At 3,000 rpm my car, under boost is making 30 lb/ft torque less than stock and it's running 11.1:1 there. If it was leaned out in the midrange, it would act civil, make more power and get better mileage and be closer to emissions targets.

My car does make 422 whp at 7,500 rpm. That part is ok. I'm not suggesting they lean it out at redline. It's under 5,000 rpm where the tweaking with Stillen's tuning needs to occur. If you look at their press release, they are getting 340 lb/ft or torque in the midrange, where my car is only making 280 lb/ft.

Thanks, I hate being a guinea pig. I do believe all our issues can be blamed on Uprev, that is why they are at Stillen. These sort of things make me really iffy about doing this. I am hoping Haltech has something for the 370 soon. Any updates on your car?

not yet im hoping they will figure it out next week i miss driving my car. We should do a meet with all the failed stillen superchargers.

Thanks for clearing that up as it did not seem resonable as originally stated.

I can understand you fruastration dude on your performance.
I would take control of the tune and not run Stillens although, must agree a 'turn key' package should be closer to dialed and more repeatable.

I can not comment farther on my own path to fix this as I am running a bone stock Z and for that reason I am sick with envy of all you members with FI.
Good luck with it, interested to see final fix.

Lol not a fail, just technical issue that are kind of out of Stillen and definitely my hands. Typical stuff when being some of the first to buy the newest stuff. Software can be a pain, I deal with it all the time at work.