Forced Induction Discussion of turbos , superchargers , and nitrous upgrades on the G35

Stillen SC and FCON

Old Feb 16, 2007 | 12:40 PM
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Stillen SC and FCON

Anyone with a Stillen SC trying ditching that split second box and using a better EMU like the FCON? Or better yet, try getting rid of the aux injector and putting in a return fuel system? Curious to hear any comments !!
 
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Old Feb 16, 2007 | 02:17 PM
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No point since the SC is maxing out at 340+HP. The blower is to small to really produce big power.
 
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Old Feb 16, 2007 | 07:03 PM
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Originally Posted by AthenG
No point since the SC is maxing out at 340+HP. The blower is to small to really produce big power.
I guess i disagree since the split second has no control over timing and the fidelity of it is terrible. I believe using something with more fidelity and more control over timing would probably be able to net you a bit more then 340, although not a whole lot. I guess the claim at 340 is with the split second FMU...no one really knows what the claim is using something different. Just curious if anyone out there thought about trying it.
 
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Old Feb 17, 2007 | 05:11 PM
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/\ Someone from VRT (not sure which one) had Stillen on his car and he did pretty much all combination he can try (porting the blower, cams, etc) and the end result is that above 350+WHP the blower just can't push anymore

here's one who had E-manage with stage 3 but got flamed for his hp #

http://www.my350z.com/forum/showthread.php?t=222418
http://www.my350z.com/forum/showthread.php?t=232209

with better EMU maybe you can squeeze 10-20 more HP but for me the cost of FCON and tunning, it is not worth it. IMHO
 
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Old Feb 17, 2007 | 06:16 PM
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dont waist your money,im maxed out at 340 rwhp and for the money the fcon will cost along with new injectors and such,its not worth it at all.
 
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Old Feb 17, 2007 | 06:30 PM
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I used to have teh stillen stage 2 kit on my car. If i were you id get the stage 4 and leave it, anything else wont produce that much hp.

Enjoy the car for what it is, its very fast and reliable, and sounds amazing, but its not going to be a monster like a 550rwhp tt
 
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Old Feb 17, 2007 | 10:26 PM
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Originally Posted by mokc
I guess i disagree since the split second has no control over timing and the fidelity of it is terrible. I believe using something with more fidelity and more control over timing would probably be able to net you a bit more then 340, although not a whole lot. I guess the claim at 340 is with the split second FMU...no one really knows what the claim is using something different. Just curious if anyone out there thought about trying it.
The SS box that comes with the Stillen SC is locked down . The SS box that comes with the Vortech is not locked . It CAN control timing and fuel and Im using it at 13 to 14psi and 430whp on a Mustang dyno .
If you buy a non locked SS box and install it with a Stillen SC , you could get a little more power out of it , as Im sure Stillen keeps it real safe
 
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Old Feb 18, 2007 | 01:21 AM
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Well...i'm running a stg IV and i'm barely putting down 320rwhp. My dyno graph shows that at midrange, i'm losing power where the root SC counts the most, the car is probably pinging and the knock sensors are kicking in and retarding timing. I took the car back to Stillen and they told me the SS box that i have, "cannot" control timing, so the SS box on a vortech must be a better box then the one on the Stillen's. None the less, i'm just looking for a better EMU to help with the pinging before i snap crackle and pop!!!

BTW...the quote i got for a CMJ stage1 return fuel with 440injectors and with the FCON IS was a whopping $5500. But is it worth it so my motor won't blow???
 
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Old Feb 18, 2007 | 07:48 AM
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If your knock sensors are pulling the timing, then they're doing their job. I think instead of a EMU, you need to find out what's causing it to ping. If you can correct that, you should get a little more power.

When you had it dynoed, what was your a/f? Maybe the SS box you received from stillen is defective or maybe their's a problem w/ the 7th injector.
 
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Old Feb 18, 2007 | 08:31 AM
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you would be wasting your money with a F-con . you could spend a couple hundred and buy a used SS box and install and tune it for a few hundred more . And have money left over to buy a $4000.00 set of wheels . And still be just as safe at the power level your at .
 
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Old Feb 18, 2007 | 08:47 AM
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Originally Posted by booger
you would be wasting your money with a F-con . you could spend a couple hundred and buy a used SS box and install and tune it for a few hundred more . And have money left over to buy a $4000.00 set of wheels . And still be just as safe at the power level your at .
+1
 
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Old Feb 18, 2007 | 11:02 AM
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Originally Posted by booger
you would be wasting your money with a F-con . you could spend a couple hundred and buy a used SS box and install and tune it for a few hundred more . And have money left over to buy a $4000.00 set of wheels . And still be just as safe at the power level your at .
I hear you on the wasting money part. For that much i can try to sell the SC and use that $5000 to buy a TT I guess the key to these FMU & EMU is to find one that will control that Aux injector. The only one that i know of is the FCON IS. Although alot cheaper then the VPRO, but still expensive.

I took the car to get tuned at Stillen since the SS box is locked, and they did not mention anything to me about a bad injector. It's a matter of fact, the midrange area, they started to dump more fuel in to see if i would get more power or see whether the knock sensor would go away, but it didn't. They were scratching their head...I'm left with trying to figure out what the next step is.
 
Attached Thumbnails Stillen SC and FCON-dyno0005.jpg  

Last edited by mokc; Feb 18, 2007 at 11:13 AM.
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Old Feb 18, 2007 | 03:48 PM
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hey Curtis

before jumping ships to the hks fcon wither the is or the v pro, we need to find the root cause problem of the lost power in your mid range. from speaking to you several times over the phone and reading up on this here on the forum. I'm not sure how they came to the conclusion that the car is detonating, were they mothering knock sensor voltage ,logging timing ,or using head phone and listening to knock ,I doutgh that they have done any of that .but I could be wrong .
my point is we need to diagnosis first then execute. if the car is in a fact detonating ,which it will not be difficult at all to confirme. we need to look at the possible causes ,it could be a simple as excessive carbon deposits on the top the pistons. carbon can be a big factor in engine detonation .also it can be cooling system deficiency which also will do it . at the end of day putting a better engine management is a never waste of money considering saving you engine and making it lost longer .

hope this will help

Sam
 
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Old Feb 18, 2007 | 04:47 PM
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Originally Posted by SAM@GTM
hey Curtis

before jumping ships to the hks fcon wither the is or the v pro, we need to find the root cause problem of the lost power in your mid range. from speaking to you several times over the phone and reading up on this here on the forum. I'm not sure how they came to the conclusion that the car is detonating, were they mothering knock sensor voltage ,logging timing ,or using head phone and listening to knock ,I doutgh that they have done any of that .but I could be wrong .
my point is we need to diagnosis first then execute. if the car is in a fact detonating ,which it will not be difficult at all to confirme. we need to look at the possible causes ,it could be a simple as excessive carbon deposits on the top the pistons. carbon can be a big factor in engine detonation .also it can be cooling system deficiency which also will do it . at the end of day putting a better engine management is a never waste of money considering saving you engine and making it lost longer .

hope this will help

Sam
Hey Sam I hear you and thanks for the feedback...I haven't jumped ship on the FCON just yet, but I've dumped so much money in this SC already, and my level of frustration is almost at its ends that I'm almost ready to sell the car!!

But to answer your questions, no one has done any indept analysis on the car, no head phones, no data logging except for the dyno. I guess that is where GTM comes in.

I figure someone probably would have tried putting a better EMU in there, but apparently no one has tried except for that emanage that one person claimed.

I'll give you another call this week, hopefully we can set a time.

thanks
Curtis
 
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Old Feb 18, 2007 | 05:06 PM
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Not to say the FCON is a waste of money but on a Stillen blower? Jesus, talk about overkill. If you were to move to something like a FCON/UTEC why even consider keeping the 7th injector?
 
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