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

runnin rich?

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Old Sep 2, 2004 | 04:05 AM
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Default runnin rich?

How can i tell if im running rich. And how can i fix it. My exauhst smells really strong.
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Old Sep 2, 2004 | 09:43 AM
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you can tell pretty much by the look of your plugs but the best way is to get a good afr meter or go to a dyno.
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Old Sep 2, 2004 | 10:57 AM
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You could use diagnostic tester. You could put the ECM in the field service mode. Or if it's bad enough, you could go by the smell.

RACE ON!!!
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Old Sep 2, 2004 | 01:19 PM
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Originally Posted by CFI-EFI
You could use diagnostic tester. You could put the ECM in the field service mode. Or if it's bad enough, you could go by the smell.

RACE ON!!!
Could you be more specific? I have a similiar issue, the car smells like its running rich.

What do I need / would you recommend, to log data from the ECM into, say, a laptop that I could look at?

Thanks,
Joe
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Old Sep 2, 2004 | 02:16 PM
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Originally Posted by Draven
Could you be more specific? I have a similiar issue, the car smells like its running rich.

What do I need / would you recommend, to log data from the ECM into, say, a laptop that I could look at?

Thanks,
Joe
I can't answer the laptop question.

Specific how? If it smells rich, it is likely, that it IS rich. Wasn't the question, "How can i tell if im running rich?"

RACE ON!!!
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Old Sep 2, 2004 | 03:34 PM
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i have a innovate afr meter to see if im running lean or rich with nos. it is hooked up to a wideband o2 sensor in the ypipe. also i have it hooked up to the msd box so i can log a/f with rpm and into the tps sensor so i know thottle position. it can record up to 44 min right in the box. then i hook it to my desktop and i can view the data logs. it is a very nice tool and only cost around $500. mainly im most concered about wot, but its nice to know your entire rpm range under different loads.

really the only other way to accurately see if your running rich or lean is on a dyno. the reason i say this is that at wot a scanner cant read the blocklearn or intigrator. ay least on my 91 it cant. it may on the newer cars.
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Old Sep 3, 2004 | 04:59 AM
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Default runnin rich?

where can i gat a dyno?
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