RobBrown
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| posted on 2/9/12 at 05:36 PM |
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Colourtune at Full Throttle
Hi Guys
Would you expect the Colourtune (ideal blue) colour to hold true at full throttle?
Mine goes orange. If the above should hold true then it would indicate too big a main jet!
Thanks
Rob
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craig1410
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| posted on 2/9/12 at 05:58 PM |
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At full throttle I would expect it to go orange or yellow because the AFR at full throttle should be richer. If I remember correctly the best full
power AFR is about 12.5:1 whereas at idle you want 14.7:1 or something like that. It you were running 14.7:1 AFR at full power then I would expect
holes in your pistons...
By the way, I'm not sure if colortune is designed to run at full throttle. I would expect it to overheat.
HTH,
Craig.
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RobBrown
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| posted on 2/9/12 at 06:08 PM |
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Thanks Craig - That's what I thought. I was hoping that the colourtune will help me out temporarily in determining whether I was runnign too
rich or not at full throttle.
I don't have a lambda boss in the exhaust - and no AFR meter.
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perksy
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| posted on 2/9/12 at 06:17 PM |
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Cololurtune is ok for basic set up at idle but the problem is reading it accurately when opening the throttle
Sadly no substitute for an accurate AFR gauge or similar
Dave Andrews jetting program is usually not far away and if you do a Google search you should be able to download it
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MikeRJ
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| posted on 2/9/12 at 10:59 PM |
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I'm surprised the Colourtune stays in one piece at full throttle  It's only designed for setting idle mixture AFAIK.
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