This post couldn't be further from worthless. As a buyer, the consumer should not have to worry about doing his / her research on which kit is better, both companies should equally do the same amount of research and development - ESPECIALLY a company that's been in business for so long. Safety should always be the first concern, then comes power. Longevity, reliability, maintenance are what a lot of people look for in forced induction.

Stillen, a known company for years has been making great aftermarket products for different car manufactures. To me, their flaw is their supercharger kits. This is not new since they were having issues ever since they came out with a root style kit for the 350z a while back (heat-soak, custom hood, lack of top-end power).

"It's really his fault. If all he wanted was power then yea, lean it out with the current set-up. But he should have told the tuner to leave it a little on the richer side if he was planning on headers all along."

You obviously don't know what's going on. He used a canned tune from Stillen that was "suppose" to be safe enough for him to use as a daily driver. Even adding headers, straight pipes, test pipes, high flow cats or what have you... it shouldn't affect the tune to the point it's too dangerous to even drive the car. The tune should be conservative enough to make changes without sacrificing the motor from detonation.

This isn't the buyer's fault.

If it was seeing more then 9psi then there were boost spikes, possibly by weather or other factors.

Huh? The knock sensor has nothing to do with the MAF sensors. Actually, neither do any of the O2 sensors :confused:

Both take readings after the MAFs and after the SC.

Whether or not the ECU can go into limp mode fast enough is a race between knock sensor sensitvity, the rate at which detonation is happening, and factory tuning.

Obviously in this case, the ECU didn't respond.

Boost is really just a measure of restriction -- what matters is the volume of air entering, which may be greater (even if boost is lower) thanks to the headers. If the fueling was off, and in-cylinder temps got too high (the reason you want to run a little rich is to have unburt fuel cool off the combustion chamber), the fuel may ignite out of time (causing preignition and detonation), which results in a good deal of shock to moving components, and boom -- something may break.

Looks like it shot a rod out the side of the block :eek:

I understand that they're not linked... you're right, but as I said before it still boils down to the tune and MAF position. You don't need the knock sensors to pull timing if there isn't any type of detonation present. What would have caused the detonation from the get-go? Fuel, tune, too high of cylinder temperatures because of the boost spike maybe.

Although if anything, better flowing headers should have reduced boost while still running lean.

I'm more inclined to believe that if the same pulley was used, the boost gauge was just off if it was reading higher boost than anticipated.

Probably it was just flowing more air, and ran lean, pop goes the motor.

Hey! Nice to see you guys are still around.

If it helps at all...when it went down into the 40's, I hit like 10.3psi with headers. Could easily just be someone who lives somewhere cold and has been hitting 10psi all winter...

:iagree:

Not the same pulley.. this pulley is designed for 8lbs..

I am curious to learn more about this and the cause. Many questions to be answered as far as i can see. Is the owner of the car not on the forum? Why has he not posted any additional info? Obviously he would want to refrain from posting if he did anying to possibly void the warranty? Keep quiet ; ). am Currently leaning toward the gtm, but no decision is made. I find it frustrating however that the first response from many folks is to speculate and light the torches as a first response. Soooo many details left out. It would be nice if we could just get factual info. This would help those of us still figuring things out come to a decision based on fact. I understand the experience some have had with stilen and by no means do i disregard that I do appreciate them sharing, but i would also like to suggest that stillen does add value to the community and to developing products for our cars. I like having choices for products for my car.

hey some people are jumping to conclusions and making it seem like the missing pieces of the puzzle are the ones they added in. Stop with the torches and wait till we find out what the complete report is before we put some one to the stake and set the ground on fire. Just not enough information yet to determin fault.
Frank

:iagree:

Theres so much we don't know yet to start the finger pointing. Lets wait till all the info is in.:shakes head:

STFU about the MAF sensor placement draw through is the most accurate way to meter airflow in any setup unless a blowoff valve is venting or the bypass valve is routed improperly. the sensors in our cars cannot detect pressure above atmospheric so to go blow through you cannot compensate for boost pressure beyond setting the fuel trims to a safe envelope for what the "expected boost" the setup will make. Tell me how many oem blow through setups exist? oh none. blow through is used in cases where the volume of uncompressed air exceeds the MAF sensors maximum flow, or when an open BOV is used, OEM's go draw through because they are all recirculated to keep noise down, and they can design the MAF sensor around the setup because they are OEM. What may be important is mass airflow sensor SIZE if the stillen supercharger draws more air than the meters can support, then they would have needed to use larger diameter piping around the sensor and compensated for this in the ecu.

Either way I say detonation caused by bad fuel and ignition settings in the tune blowing the piston up, that or unrelated mechanical failure such as as a spun bearing causing the rod to blow and the piston got munched by the crank on the way out.

subscribed this is getting good

The FI section is like a Korean Drama :rolleyes:

the amount of misinformation and misunderstanding in this thread makes my head hurt.

Do you really believe the bolded part? Not to be fresh, but are you a Communist? Everything isn't made equally. That statement is beyond ignorant. Consumers shouldnt have to research their products?? Wow. Might I suggest a move to North Korea?

This motor didn't just blow up from him driving normally. He beat on it without tuning it. That's a Darwin Award nomination. These tunes are complicated. If anything, a stock tune from a manufacturer should be very conservative in terms of boost (not allowing the car to reach max), AFR (not pig rich but not too lean), and timing (no crazy advances), with the intention of having it optimally dyno-tuned by a professional. To think that you can just plug and play an F.I. setup is stupid.

Saying that the owner had no personal accountability in romping on his forced induction car with a new modification without a tune is idiotic. It's his car, he should know "hey, maybe I should make sure this is tuned before I beat on it". It's a childish outlook, honestly. You need to take responsibility when this stuff happens. His car didnt fly off the dyno. His car wasn't broken into overnight (as one of mine was). IF something was installed improperly and lead to this then it's not his fault. But still, maybe it's also not such a good idea to just throw money at a car without any knowledge of how it works.

If your bone is sticking out of your leg and you're in excruciating pain but the doctor says it's not broken, are you going to blindly believe him?

Even IF the tune was too aggressive, it's only the fault of the owner for beating on it before he got either A) a second opinion from the manufacturer or B) re-tuned. He could have driven the car normally and been fine.

Why the boost was spiking, that's another story...

Although I agree companies should take some responsiblity for doing adequate R&D before selling products, I think the issue here is moot.

I'm sure any warranty offered is for a locked tune and unaltered set-up. Meaning, if you change the tune or any major aspects of the set-up, you are effectively out of warranty.

Changing pulleys, headers, or tuning parameters will potentially greatly alter how the car runs, and that is beyond the control of the company that designed the kit.

If nothing was altered, car was driven normally, and something went pop, certainly the warranty should stand, and we could question the R&D of the company that developed the kit.

Here, I think, it's all wait and see...

LOL. :rofl2:

So this is where all the cool kids are :drama:

Change what you want on a F.I. motor, it will be fine.... classic

Let's chill with the attacks and see where this thread develops so we can find out what happen to educate us instead of getting it locked and we don't find out anything. Stillen is involved and there being active in this thread. By makin assumptions and jumping on them with out knowing the cause is goig to make them not want to post shot about this an lean more towards a **** them attitude.
Frank

hi

:hello:

Oh, hey. I'm still curious about the reason why it went boom.

Dude, that photo in your sig is sooooo sick! :tup:

When are you gonna upload the pics from the photoshoot? I'm excited to see how the rest came out. :excited:

is the infamous dumby back?:tiphat:

Haha, let me get on that... I've only edited 3 pictures so far...out of the 140 I took. Of course, I'll only choose about 10 or so.

No hurry here man, just get it done whenever you can :tup:

Did you take the pics yourself?

Yes sir. I'm a do it yourself kind of guy. I messed with my new GoPro today, too... Hopefully, I'll have some cool videos for ZDayz.

Nice. I would like to do one too, but don't have an actual camera, just my Droid Incredible.

Skip your finals, come to ZDayz, and I'll do a photoshoot for you FO FREE! haha.

In for results

hahahahahahahahahhahahaha warranty through nissan, i work for nissan. biggest load of **** ive ever heard. what are you going to tell the warranty hotline.. umm soo yah this customer has a aftermarket supercharger and his engine blew up, the guys gonna laugh his *** off. look on the stillen site, last sentence comes with no warranty expressed or implied. But since his engine blew because of not gettting a tune, which is nissans fault, them maybe hell get warranty that way. Hes going to have a hard time.

warranty goes BOOM

Certain dealers have a performance division, in which they warranty their work. For example, my old Infiniti dealer would install/warranty Vortech superchargers kits.

To be honest i didnt know that, but they warranty there work.
so if the install was done wrong, and the engine poped then they'd warranty it.
but if the engine just blows up, i highly doubt theyll warranty it. but hey i could be wrong, thats just what im assuming.

And I could be wrong as well. Putting an aftermarket supercharger or turbo on an NA engine is already a risk. The liability a dealer undetakes is huge. I'm sure they charge an arm and a leg for the kit plus they will charge a ridiculous amount for installation and everything included. That's probably the only way they can justify offering a warranty package and an aftermarket forced induction system. Not to mention...they parts at wholesale, haha.

I know my local ford shop will do power up-grades even SC kits. They do the work, with their parts only then will they warranty. My local nissan place will not do anything like this.

The difference is that is with Ford racing parts (similar to Nismo parts but more options). Ford allows you to order almost anything and put it on your car with a full warranty but you also pay 10-20% more for that warranty plus install.

Yeah my dad had some stuff done to his GT through ford it was BIG$$ for just a small amount of stuff. It makes him happy, so i don't say anything.:tup: