[Diy_efi] Tuning with too much power for dyno?

[Shannen at grolen.com]

DHi, Matt.
You might consider finding someone who can generate a computer based map
from a limited set of test info.  This is a procedure used for
commercial engine tuning, and may be applicable for your application.
http://www.mathworks.com/company/newsletter/oct02/statistical.shtml
gives an example of the type of software used.
Shannen
I>I¹ve got a wee problem.

DI>20B (mazda) engine running Methanol, 2bar + of boost and Nitrous, produces
DI>too much power (torque) for the dyno (International Dynometers Dyno Packs ­
DI>Hub)
DI>In 2wd mode they are good for around 800hp, but nowhere near the torque of
DI>the engine.
DI>Engine is looking to put out approx 900hp before Nitrous.
DI>The engine will be able to be tuned to around 5000rpm on the dyno before
DI>torque limits, but as its running a 5500rpm stall convertor in it that will
DI>pose problems also.

DI>Apart from making MANY drag passes and logging everything and tuning back
DI>from there, does anyone have some ideas that maybe we havn¹t thought of to
DI>tune this thing?

DI>Cheers
DI>-- 
DI>Matt Porritt
DI>RC Race Cars and Supplies
DI>ICQ #22776813






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