S2000 Forced Induction S2000 Turbocharging and S2000 supercharging, for that extra kick.

BRP/SOT Hotside SC Install

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Old Sep 14, 2007 | 08:44 PM
  #291  
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Originally Posted by PilotKD,Mar 14 2007, 06:32 PM
The definition of "linear" is as follows:



Here's a preliminary dyno plot of the SOT roots SC on an AP2:



I see nothing non-linear about the power delivery of the roots style blower. It provides the most beautiful hp/tq curve that I have ever seen. One who talks about prefering a linear power band shouldn't even have a car with a VTEC motor because the power output of a stock S2000 is hardly linear to begin with.
this is perfect for Track s2000's , the hp/tq curve it provide will never spun u away at the hight speed conrnering , and i had never seen any turbo s2000's hp/tq curve in that way



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Old Sep 15, 2007 | 06:21 PM
  #292  
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Vtec looks a little abrupt for tracking. I personally like it when there is a smooth transition even if it means sacrificing some power.
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Old Sep 15, 2007 | 07:08 PM
  #293  
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Originally Posted by scareyourpassenger,Sep 15 2007, 06:21 PM
Vtec looks a little abrupt for tracking. I personally like it when there is a smooth transition even if it means sacrificing some power.
Ideally the VTEC should happen right where the curves cross.

Looks like the VTEC should be at around 55-5600 for that setup.
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Old Sep 16, 2007 | 07:59 AM
  #294  
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My Dyno is a bit smoother at VTEC transition. You can still feel it though

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Old Sep 16, 2007 | 10:10 AM
  #295  
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Originally Posted by scareyourpassenger,Sep 15 2007, 08:21 PM
Vtec looks a little abrupt for tracking. I personally like it when there is a smooth transition even if it means sacrificing some power.
You should keep it IN VTEC for the whole lap, the transition shouldn't matter (except on your outlap.)
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Old Sep 16, 2007 | 10:13 AM
  #296  
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Originally Posted by Reagent,Sep 15 2007, 09:08 PM
Ideally the VTEC should happen right where the curves cross.
Why?

Isn't it dependant on the way the cams are designed, and to kick onto the high lobes just before the low-lobes start to lose power? How is it that the crossing of the torque and HP curves are anything other than coincidental?
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Old Sep 16, 2007 | 11:05 AM
  #297  
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Originally Posted by leo520,Sep 14 2007, 11:44 PM
this is perfect for Track s2000's , the hp/tq curve it provide will never spun u away at the hight speed conrnering , and i had never seen any turbo s2000's hp/tq curve in that way



my hp / torque curve looks exactly like that (if not even more linear) and I have a turbo...

(my dyno graph is in my s2ki gallery)
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Old Sep 16, 2007 | 11:14 AM
  #298  
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[QUOTE=ruexp67,Sep 16 2007, 10:13 AM]Why?

Isn't it dependant on the way the cams are designed, and to kick onto the high lobes just before the low-lobes start to lose power?
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Old Sep 16, 2007 | 11:22 AM
  #299  
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You are trying to tune for torque not the horsepower curve. There is better resolution of when the power begins to fall off with the torque curve rather than the horsepower since hp will continue to rise as torque begins to fall.
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Old Sep 16, 2007 | 11:35 AM
  #300  
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Originally Posted by neeman77,Sep 16 2007, 11:22 AM
You are trying to tune for torque not the horsepower curve. There is better resolution of when the power begins to fall off with the torque curve rather than the horsepower since hp will continue to rise as torque begins to fall.
I would put it where the hp curves cross. You can go with the torque curves if you prefer. As it happens they are within a few rpm of each other in this case.
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