S2000 Under The Hood S2000 Technical and Mechanical discussions.

VErsion 2 Toda cams

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Old Jul 24, 2003 | 09:46 AM
  #201  
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Hi gang...wassuppp....
Unfortunately, I have not dynoed my car yet. Read previous post for explanation.......

Wicky,
I have been driving my car a lot. I concur when you say the cams are kndda loud (remember the PM I sent you awhile back about the loud valves).
It could be just me but I really feel that the car seems to agree much better with the Toda headers that I have... this is with comparison to the Mugens that I had....
I think you will see that tuning will get rid of the 7K power loss feeling. My previous dyno runs had indicated that the car would hit a Plato at ~8000 RPMS and just stay there till redline. Almost like it hit a brick wall..
After the installation of the new headers and exhaust, the car seems to go through the rpms smoother and much quicker.
I am almost sure that my car is not platoing in HP like it was before (fingers crossed).... This maybe due to several factors....
1. Fixed/ adjusted clearance
2. Better flowing exhaust and headers.....
3. I'm just thinking what I want to think....going crazy...
Only time and dyno can tell

Wicky,
Have you considered going Emanage..... I have been doing a lot of research on this product and it really seems to have a lot of potential.....
Beroz

Beroz
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Old Jul 24, 2003 | 10:02 AM
  #202  
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yeah. I really like the eManage, and had originally hoped to use it. And it's even better now that Wes and other's have figured out the timing issue. I admit I'm paranoid about the stock ECU compensating for the eManage. I'm also hoping for the day when ITB's are available for our car I just don't like the idea of having a bunch electronics lying to each other about whats going on.... the EMS seems a much more direct and precise approach. But I admit to being anal and paranoid about
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Old Jul 24, 2003 | 10:57 AM
  #203  
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Hmmmm....I though bigger cams would lean out the car. Interesting.
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Old Jul 24, 2003 | 11:06 AM
  #204  
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[QUOTE]Originally posted by slick rick
[B]Hmmmm....I though bigger cams would lean out the car.
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Old Jul 24, 2003 | 11:07 AM
  #205  
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I thought the same thing. But I wonder if the stock ECU could be freaking out with all the extra air flow it's seeing..... I don't know.... it makes sense to me that in order to "save" the motor the ECU might retard timing and/or richen the fuel mix. I don't know if that is in fact what it is doing. This is why I need to get it on the dyno. Either way, I think the cams need some tuning to squeeze every last drop out.....
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Old Jul 24, 2003 | 11:18 AM
  #206  
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I'm sure you will benefit from tuning, but the only way the ECU would know there is more air flow is by analyzing the O2 sensor.
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Old Jul 24, 2003 | 11:25 AM
  #207  
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and the ECU doesn't do this?
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Old Jul 24, 2003 | 11:27 AM
  #208  
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Bigger lobes will cause more overlap...in this case not too much more overlap........if you are running the stock ECU, before the ECU adjusts the A/F ratio the the desired value, you could be running lean...... the ECU will only retard you timing if detonation/ knock has occured. Another way to detect increase in flow in by measuring teh monifold pressure......
Beroz
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Old Jul 24, 2003 | 01:16 PM
  #209  
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hmmmm..... I need to dyno. Thanks guys for the input.
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Old Jul 25, 2003 | 07:57 AM
  #210  
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beroznikmal

Have you Dynoed yet?
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