k100 calibration - A/F

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nunoctr
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k100 calibration - A/F

Post by nunoctr » Tue May 16, 2006 12:32 pm

Hi,

I have hondata K100 with the original hondata calibration, supersprint cat back, and stock airbox with hondata mod:

Can someone analyse the A/F of my car on the dyno (lambda):

Image

is the A/F rich, lean or good?

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Hondata
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Post by Hondata » Tue May 16, 2006 9:37 pm

First, I'll like to point out in my experience it is not uncommon for a dyno lambda to read incorrectly. Sometimes it is good to run the car on the dyno at light throttle, so that the engine is in closed loop, and check that the dyno reads lambda 1.0 (14.68:1 AF).

In your case the engine appears lean in VTEC. You should be 0.87 - 0.90 lambda at full throttle. Below 5000 rpm is good, above 5000 rpm is too lean, and above 7500 rpm is very lean. Get the engine re-tuned.
Hondata

nunoctr
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Joined: Tue May 16, 2006 12:29 pm

Post by nunoctr » Wed May 17, 2006 4:51 am

Thanks for the reply hondata.

How can this be lean if I only have a cat back (with cat), shorty header and stock airbox with hondata airbox ?

The calibration is the stock tuned.

thanks

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Hondata
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Post by Hondata » Wed May 17, 2006 9:06 am

The 'stock tuned' calibration was made with the stock exhaust.
Hondata

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