S2000 Talk Discussions related to the S2000, its ownership and enthusiasm for it.

Mugen Header Dyno Sheets

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Old Nov 29, 2000 | 04:55 AM
  #21  
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[QUOTE]Originally posted by Bieg:
[B]Maybe the Mugen headers transfer MORE heat to the engine compartment than the stock headers do.

So you lost 2 HP peak and shifted it lower down in the rev range and picked up 4 pounds of torque.

Doesn't seem worth the effort.
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Old Nov 29, 2000 | 07:28 AM
  #22  
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Bieg:

I am running the headers w/o the heat shield, so that may cause more heat in the engine compartment.
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Old Nov 29, 2000 | 09:54 AM
  #23  
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Krazik-s2k-

You absolutely need the heat shield. I know- it looks pretty without the shield, but it's there to minimise the radiant heat, and it makes a BIG difference in stop and go performance.

-Nick
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Old Nov 29, 2000 | 10:16 AM
  #24  
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The percent increase in max torque is greater the the percent decrease in max power. Very nice to see such gains over a good portion of the torque/power curves. I look forward to the headers.
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Old Nov 29, 2000 | 10:35 AM
  #25  
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Krazik, are you interested on a FPR? I would love to see a Dyno Sheet on the FPR now.
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Old Nov 29, 2000 | 11:52 AM
  #26  
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Fito: Might be I was thinking I would get the Vtec controller tho.

GTR: ok, then I will install it. I don't think the heat shield would have made any diff on the dyno tho. Hood was open, and fans were blowing on the front of the car.
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Old Nov 29, 2000 | 01:31 PM
  #27  
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[QUOTE]Originally posted by krazik-s2k:
[B] I don't think the heat shield would have made any diff on the dyno tho.
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Old Nov 29, 2000 | 02:23 PM
  #28  
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Originally posted by cdelena:
I have been told that the S2000 with the stock ECU is so sensitive to air temp/water temp that dyno runs are very easily affected and that many should not even be considered valid.
I have heard the car is succeptable to heat soak, but I never heard the second part.
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Old Nov 29, 2000 | 02:30 PM
  #29  
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Originally posted by krazik-s2k:
I have heard the car is succeptable to heat soak, but I never heard the second part.
The reasoning is simply that heat brings ignition retard in this car. Maybe it was an overstatement, but it is easy to wind up with warmer than normal water and intake air temperatures under shop conditions even with fans.
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Old Nov 29, 2000 | 02:31 PM
  #30  
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krazik-s2k-

Actually, Chris is right on that one.

Because the stock ECM is so sensitive to temperature variances, you will never get consistent dyno runs, which is what I was alluding to earlier. I think the biggest hinderance to the S2000 making decent power is the ECM, then bettering it's breathing capability with intake, and exhaust mods. But, in any case, the header is a very good purchase. Congrats!

-Nick
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