S2000 Under The Hood S2000 Technical and Mechanical discussions.

I Can't Redline! HELP!

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Old 01-10-2007, 08:13 PM
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When performing the MAP whack should I also reset the ecu?

What is the 8/80 anyway? Can you elaborate?
Old 01-10-2007, 08:41 PM
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Check this out. Does your MAP sensor have a zip tie like this?
https://www.s2ki.com/stor/library/TSB/a04-073/index.htm

The problem I believe has occurred since my cel flashed for my 02 sensor but I don't know if it was immediately following.
Was the CEL actually flashing/blinking?
Old 01-10-2007, 09:02 PM
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No flashing CEL and yes, prior to today, the MAP sensor did have the zip tie. I removed it today to give it the WHACK!
Old 01-11-2007, 05:05 AM
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Originally Posted by IIGQ4U,Jan 10 2007, 11:13 PM
When performing the MAP whack should I also reset the ecu?

What is the 8/80 anyway? Can you elaborate?
No need to reset ECU. 8/80 is the length of the warranty... 8 years or 80,000 miles.
Old 01-11-2007, 06:51 AM
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Sweet, I am going to the dealer today!
Old 01-13-2007, 09:22 AM
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Thanks guys for your replies.

For those of you who believed that my car was running rich and that the issue was with my O2 sensor and catalytic converter you were right.

I was doing some thinking... The engine will make adjustments based upon information collected by the O2 sensor. When you have a faulty O2, the ecu is not receiving correct information and in my case, the information or lack thereof that the ecu was receiving was causing the ecu to add increased amounts of fuel. This explains why I was unable to reach redline and had decreased power output.

My catalytic converter was replaced by Honda under warranty and the O2 sensor I ordered prior to contacting Honda.

Now that I have the car back, it feels brand new! It is running very very well. I can't believe how much I was missing!

I learned that a car that is running too rich has a huge and noticeable impact on performance.

Too bad that I replaced my sparkplugs, oil, and performed Map whacks to try and diagnose what should have been obvious by my illuminated check engine light. Since these are all for the good, I really shouldn't complain especially with how great the car now performs.
Old 01-13-2007, 11:14 AM
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Good to hear that you got it resolved....
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