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

roplusbee 09-09-2010 09:22 AM

*Gasp*
<Off-topic>

Maybe this is a hidden message telling me to save up longer and go TT. I have LTHs coming though......................

</Off-topic>

Perhaps Stillen needs to give up more information about the engineering behind their kit to assist Shops and DIYers with installation and tuning of this application. It seems like history is repeating itself..............

biggersNISMO 09-09-2010 09:36 AM

Let's hope that history DOES NOT repeat itself. The majority of 350z Stillen SC users ditched their SC

roplusbee 09-09-2010 09:52 AM

Quote:

Originally Posted by biggersNISMO (Post 713915)
Let's hope that history DOES NOT repeat itself. The majority of 350z Stillen SC users ditched their SC

:iagree:

Unfortunately, we seem to be headed in that direction. I don't remember folks having these kind of issues with Z33 installs though............

FuszNissan 09-09-2010 10:00 AM

At least you didn't have to buy a new hood

Phimosis 09-09-2010 11:32 AM

Quote:

Originally Posted by Lug (Post 712921)
It would cost him even more money but it would be a great data point in trying to answer the question of whether a too free flowing exhaust negatively effects the actual numbers when SCing.

syperchargers have been used in racing for more than 60 years now. Have you ever seen a dragsters that they put cats or some other form of increased exhaust restriction on it for the sake of making
More power?

tomnavone 09-09-2010 12:00 PM

2 Attachment(s)
Here is the dyno with the supercharger installed and yesterday the dyno with the new tune. Lost 20 hp on the new tune. Anyone having luck with the new tune?

tomnavone 09-09-2010 01:46 PM

Stillen is picking up my car next week to take it to their shop to finally get this thing fixed.

Lug 09-09-2010 02:02 PM

Quote:

Originally Posted by Phimosis (Post 714100)
syperchargers have been used in racing for more than 60 years now. Have you ever seen a dragsters that they put cats or some other form of increased exhaust restriction on it for the sake of making
More power?

Those are almost exclusively roots types. I'm not saying I agree, just that this rumor has been seen for years and I've even seen some manufactureres allude to a too unrestricted out flow. I can't figure out why this would be but both SC applications seem to have a occational problem when the standard exhaust was changed. Might be coincidence, might not. Just an easy way to find out as it's the most significant delta in his car.

weiboy718 09-09-2010 02:30 PM

Quote:

Originally Posted by tomnavone (Post 714307)
Stillen is picking up my car next week to take it to their shop to finally get this thing fixed.

That's very cool!

roplusbee 09-09-2010 02:33 PM

That's wassup. Let us know how it turns out.

Neo187H 09-09-2010 02:50 PM

How is it that people are still debating over this exhaust thing? Its been proven on Shumby's car that the extra flow from the exhaust causes a loss of boost and thereby power. This is due to the overlap of the valves letting the intake charge flow right out of the cylinder and into the exhaust before it can ever make power.

The issue is valve overlap, the band-aid solution is to increase exhaust backpressure to stop the intake charge from flowing right out of the cylinder. NA engines want more valve overlap than FI applications to increase exhaust scavenging and such while FI applications dont want it because this kind of thing happens.

So until someone cracks the VVEL control module and allows tuners to change valve timing we will be stuck with this issue, increase the boost to make up for boost "lost" or increase exhaust backpressure.

Edit: I should add in that this is what I suspect to be the issue based on my knowledge, I can't say this is for sure whats wrong with it as I don't exactly have the means to back up that statement.

Joebarchuck 09-09-2010 04:17 PM

Can we have an official Stillen answer on all these problems and differences in between their test cars and the ones from customers. They really need to have an official answer as to avoid any further damage to their Stillen SC brand.

Despite all of these issues, I may still go for the Stillen SC as it is most likely the most reliable over time nonetheless they absolutely need to address the low HP gain people on here have been having. You cannot advertise 155HP gain and once install only get 80HP.

We absolutely need some official communication from Stillen.

shumby 09-09-2010 04:25 PM

^^^ WTF are you basing more reliable over time on. so far I have the most miles but on any SC set up and it is GTM. No issues and did everything I asked of it. Stillen has a long track record of dissapointing the infiniti/nissan crowd.

Zsteve 09-09-2010 04:35 PM

Quote:

Originally Posted by shumby (Post 714517)
^^^ WTF are you basing more reliable over time on. so far I have the most miles but on any SC set up and it is GTM. No issues and did everything I asked of it. Stillen has a long track record of dissapointing the infiniti/nissan crowd.

Did you ask it for some sweet looking female companian in the passenger seat? Thats gonna be one of my demands out of GTMs SC. By the way how many hours did your install take?

shumby 09-09-2010 04:42 PM

Yes i did ask it that and boom. My sxuper hot wife was in the car with me. lol. My install took a long time. but i had alot of other work done at GTM at the same time with some custom work for my oil and tranny coolers plus the Camp II install. I did lie it did not do everytrhing i asked of it. I asked it to get me more BJ's but that has not happened yet.


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