Fuel Adjustment leaning 5500 to 6500 rpms
#1
Happy CL-S Pilot
Thread Starter
Fuel Adjustment leaning 5500 to 6500 rpms
Guys,
I was just looking at one of my dyno with AIR/FUEL ratios graph. You can clearly see that there is significant increase of Fuel between 5500 to 6500 rpms. I think this by design is to protect the engine once the hot-cam of VTEC is engaged.
Do you think a correcting map to adjust the this dip and having the A/F ratio around 13.75 will help improve performance?
Thanks,
Here is the dyno graph
I was just looking at one of my dyno with AIR/FUEL ratios graph. You can clearly see that there is significant increase of Fuel between 5500 to 6500 rpms. I think this by design is to protect the engine once the hot-cam of VTEC is engaged.
Do you think a correcting map to adjust the this dip and having the A/F ratio around 13.75 will help improve performance?
Thanks,
Here is the dyno graph
![](http://home.comcast.net/~beiruty/PhotoAlbum/StoneHeadersVsOBXDynoAcutalAFRatio.jpg)
#3
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We aren't going to be able to tell until we can start strapping them on the dyno. It will be pretty easy to tell what the Uni-Chip does to the A/F ratio. Run 2 runs with out the chip plugged in. Plug the chip in, let the car idle for a few minutes and do 2 more runs.
#5
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You are most likely correct that this is by design. But leaning it out won't have much of an effect in the range that you are working in. I tried this on a NA TL-S and the power really didn't change.
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