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

Vortech Supercharged.now what?

Old Jul 10, 2006 | 03:50 PM
  #16  
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no you can run test pipes

people just don't understand that your boost psi will drop but you'll gain power
you'll also lose some low end power though
 
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Old Jul 10, 2006 | 04:22 PM
  #17  
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TS L-Spec Reflash, but you will have to re-tune.

What's the benefits of UTEC over the SS box that comes with the Vortech?
Btw, anything under 400whp is pretty safe and reliable for SC setups if you have a good tune.
 
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Old Jul 10, 2006 | 08:08 PM
  #18  
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Originally Posted by Dan_K
TS L-Spec Reflash, but you will have to re-tune.

What's the benefits of UTEC over the SS box that comes with the Vortech?
Btw, anything under 400whp is pretty safe and reliable for SC setups if you have a good tune.

SS box is garbage, without the autosport you have to cut into the OEM harness. I know of guys that have had problems with that thing, like breakdowns in the middle of the night. Hit urban up, he will tell you all about it.
 
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Old Jul 11, 2006 | 08:48 AM
  #19  
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damn...this stuff is hella expensive!!!
hahaha shoot.
Thanks for your advice though guys.

I feel that my car shifts just fine without the valve body though. I feel that I should get something like the UTEC though definitely.
 
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Old Jul 11, 2006 | 09:36 AM
  #20  
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engine management is key!
 
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Old Jul 11, 2006 | 10:47 PM
  #21  
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Keep an eye on your tranny fluid. Is it nice and red or turning brown? Does it smell burnt? My $0.02.
 
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Old Jul 12, 2006 | 12:37 AM
  #22  
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is the VB only necessary if you are trying to make a lot of ponies? how does it benefit?
 
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Old Jul 12, 2006 | 03:27 PM
  #23  
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Originally Posted by Sundeviljay
is the VB only necessary if you are trying to make a lot of ponies? how does it benefit?
The VB upgrade increases the hydraulic pressure at which the tranny runs so the shifts are faster and it provides more clamping power to avoid slippage as I understand it.
 
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Old Jul 12, 2006 | 05:35 PM
  #24  
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Straight from the Stillen website, http://www.stillen.com

Looking for crisper shifts and better performance from your automatic 350Z, G35 Coupe or Sedan? Our new valve body upgrade is the answer. This unit will increase the power handling ability of the trans as well as firm up the shifts and improve performance. Shifts 1-2, 2-3 and 3-4 are substantially improved. Our extensive modifications include upgrading springs, revalving and machining the stock unit. Better performance than any other unit!

**Please note - THERE IS NO CORE PROGRAM. This upgrade is performed on the valve body already inside your transmission. You must remove your valve body and send it to us for the upgrade. Once you have purchased our Valve Body Upgrade we will send you (via overnight shipping) an empty box. This will contain instructions on removing the valve body, adequate packing materials for shipping, labeling and prepaid freight to return it to us via overnight shipping. It is very important that you package the valve body carefully. Once we receive the valve body, we will have the valve body upgrade finished within 2 days of receiving it and will send the completed unit back to you (again via overnight freight) for installation. The slightest damage can render the valve body and the transmission unuseable. As replacement valve bodies are unavailable, we insure each valve body shipment for the cost of an installed replacement transmission and limited rental car use. With this insurance and 3 overnight shipments, the flat cost of shipping is $150.00 Please contact us with questions. NOTE: You MUST use Nissan's speciality trans fluid for this transmission. Any other fluid will cause damage! **
 
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Old Jul 12, 2006 | 05:41 PM
  #25  
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I thought the Autosport harness is only necessary if you have Automatic. Does the Vortech cut into OEM harness if you have both Auto or 6MT?
 
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Old Jul 12, 2006 | 08:31 PM
  #26  
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FYI this was posted by GurgenPB on my350z.com:

...


Not true at all. The VB does NOT just make the tranny shift faster, it increases the clmaping force at WOP from 210psi of hydraulic pressure (approximately 3000lbs of clapming pressure) to 275psi (do the math on the clamping pressure) for a 31% increase in holding power. Remember that that tranny was designed with about 400crank hp (if oyu take into accoung that it's also found in the qx56). 30% on top of that should make it hold at east 533crank hp. Upgrading the TC and lowering it's stall should lower the fluid temps, which will probably increase it's holding a little bit (maybe negligible). Upgrading the cluth material and bands will get you only another 10% or so (from my research). Adding an additional clutch into each clutch pack, if that's possible here, will yield another 10-25%,a ssuming you go from 4 to 5 packs in that gear. By my calcs, you can then theoritically (and practically) get 630-720 crank HP, that's 510-583 whp reliably, assuming you have a fully and properly built tranny. If it's just the VB, then you are looking at 431whp minimum. All calcs assume 19% drivetrain loss. If you must push more power through the tranny relative to the amt of calculated horsepower that it can handle, then the quality of your ATF cooling IMO will play a major role in determining the ATs lifespan.

BTW, one can ask "why can't we crank the line pressure beyond the 275psi to get more clamping power?" The answer: you can, but that will overdrive the ATs hydraulic pump, and unduely affect its lifespan. With numbers beyond 275, it is estimated that the pump will last around 10-15K miles, and I belive this estimate assumes hard use. If that's what oyu are willing to do, that can sure be arranged.
 
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Old Jul 12, 2006 | 09:30 PM
  #27  
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^^^that Gurgen is one smart ****
 
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Old Jul 13, 2006 | 09:28 AM
  #28  
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Originally Posted by Dan_K
I thought the Autosport harness is only necessary if you have Automatic. Does the Vortech cut into OEM harness if you have both Auto or 6MT?
Yes it does IF you dont have the AutoSport harness to use with it. Transmission type does not matter.
 
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Old Jul 13, 2006 | 10:40 AM
  #29  
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wow...so much more to do.
 
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Old Jul 13, 2006 | 10:53 PM
  #30  
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Hmm...Autosport harness or Reflash? How hard is it to return to stock? I am guessing, just splice the wires back together.
 
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