C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Datamaster diagnostic help?

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Old May 2, 2002 | 11:58 AM
  #1  
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AlHale
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Default Datamaster diagnostic help?

Would anyone like to help me (a new user of datatmaster) look at a datamaster file and cooment with your opinion on the health of my car?
I have a 1994 LPE 383 SR that runs strong but when I run WOT it appears too rich. I am thinking that I have something simple to fix but I cannot pinpoint the cause. I would appreciate and help?
Email me and I will send you the file...or I will post it when I can get the chance.
It is a 305kb file.
Thanks,
Al
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Old May 2, 2002 | 12:11 PM
  #2  
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Default Re: Datamaster diagnostic help? (AlHale)

Keep in mind that at WOT your system is in open loop, and you really need a wide band O2 sensor to get proper readings. During normal closed loop driving, stoich is somewhere around 14:1. At WOT, it should be somewhere around 12:1. The stock O2 sensor pretty much only tells you if you're at the 14:1 ratio. When you go into WOT and your stoich changes to 12:1, a lambda sensor will read rich...

Go ahead and send me your file, I'll see what I can.
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Old May 2, 2002 | 04:02 PM
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Default Re: Datamaster diagnostic help? (Mojo)

Here is file. Any comments/advice or questions will be appreciated.

http://communities.msn.com/MyPublics...n%20512002.uni
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Old May 3, 2002 | 08:45 AM
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Default Re: Datamaster diagnostic help? (AlHale)

I do notice that the TPS voltage never goes above 4.0. I thought it shoul dbe in the 4.5-5.0 range?
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