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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: what puter for 7mgte?
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Fri, 07 February 2003 02:35
 
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>are you suggesting a higher resolution load map is pointless?
>I know quite a few people who have installed Microtech's and >been disappointed with the results. Like I said you can get big >power out of them, but some people have greater requirements >than that
i agree on knowing ppl disappointed with the microtechs... do they interpolate correctly between points? or do they actually step from point to point like some used to?
the amount of fuel needed by an engine is determined by the amount of air getting into the cylinders (+ or - a bit), so ful is proportional to the volumetric efficiency.
torque is also proportional to volumetric efficiency since you get out what you put in, as such.
so... the amount of fuel, and thus the fuel curve for a given load or rpm, will be proportional to the torque curve.
if you have a smooth torque curve (ie V8's) you do not need very high resolution fuel maps. if you have a peaky turbo engine or intake pulse tuned motor (harmonic tuning etc) then you will need higher resolution to account for al the dips and peaks in the torque curve.
to decide how many points you need, calculate your torque curve from the dyno day power curve. then try to draw straight lines on the torque curve to describe it. where the straight lines intersect is where you need a point.
how many changes in curvature does a normal torque curve have?? mine would need about 5 or 6 rpm points to describe WOT. and maybe another just below idle for the idle stabilising (richening) point.
have a look at a table of entries for those computers that have 100rpm or even 500rpm steps, and se how many of them are redundant if you could interpolate between a few points.
Cya, Stewart
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| | Subject | Poster | Date |
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what puter for 7mgte?
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struan | Sun, 02 February 2003 00:58 |
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Re: what puter for 7mgte?
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mrshin | Sun, 02 February 2003 01:04 |
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Re: what puter for 7mgte?
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SUPRAGTE | Mon, 03 February 2003 07:59 |
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Re: what puter for 7mgte?
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struan | Mon, 03 February 2003 12:18 |
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Re: what puter for 7mgte?
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Norbie | Mon, 03 February 2003 23:13 |
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Re: what puter for 7mgte?
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justcallmefrank | Mon, 03 February 2003 23:44 |
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Re: what puter for 7mgte?
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oldcorollas | Tue, 04 February 2003 02:57 |
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Re: what puter for 7mgte?
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SUPRAGTE | Thu, 06 February 2003 11:02 |
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Re: what puter for 7mgte?
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Norbie | Thu, 06 February 2003 13:08 |
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Re: what puter for 7mgte?
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oldcorollas | Fri, 07 February 2003 02:35 |
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Re: what puter for 7mgte?
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SupraPete | Thu, 06 February 2003 22:09 |
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Re: what puter for 7mgte?
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gianttomato | Thu, 06 February 2003 22:35 |
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Re: what puter for 7mgte?
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SupraPete | Thu, 06 February 2003 22:44 |
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Re: what puter for 7mgte?
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gianttomato | Thu, 06 February 2003 22:59 |
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Re: what puter for 7mgte?
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SupraPete | Thu, 06 February 2003 23:57 |
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Re: what puter for 7mgte?
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oldcorollas | Fri, 07 February 2003 02:21 |
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Re: what puter for 7mgte?
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SUPRAGTE | Sun, 09 February 2003 09:40 |
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Re: what puter for 7mgte?
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mrshin | Sun, 09 February 2003 11:42 |
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Re: what puter for 7mgte?
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oldcorollas | Tue, 11 February 2003 00:11 |
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Re: what puter for 7mgte?
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mrshin | Tue, 11 February 2003 09:46 |
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Re: what puter for 7mgte?
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justcallmefrank | Tue, 11 February 2003 09:59 |
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Re: what puter for 7mgte?
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mrshin | Tue, 11 February 2003 11:23 |
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Re: what puter for 7mgte?
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SUPRAGTE | Tue, 11 February 2003 11:58 |
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Re: what puter for 7mgte?
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mrshin | Tue, 11 February 2003 12:08 |
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Re: what puter for 7mgte?
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SUPRAGTE | Wed, 12 February 2003 11:39 |
