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@ Pontiacjack: Here in switzerland there's a manufacturer wich has already a few years ago developed a dyno, wich uses a torque sensor on the drive shaft axles, it's enough accurate to have torque power figures that are comparable to high end RR...

Hi thanks for your help, but i dont have a auto tranny, like mentioned i would like to use these paramenters, as im able to read out in a log file the mentioned data, this would allow to put these in a excel file to make a calculation, right now i need help to make the equation out of these as...

Tried also the iphone app, but wasnt happy at all with the results, too much inconstancy troughout the runs and differences from 10-20% compared to the RR and G-Tech measurements. This is why i would like to give it a try with the log file calc wich would give me the possibility to consider...

Well i would like to see on base of the rpm range where a modification has benefittet from a single modification, so i guess this would be more precisely with such a calculation as im able to make log files of each run. I've already a g-tech accellerometer, it's a very precise tool even...

Thank you for you answer. Is the bsfc just an assumption (turbo engine) or do i need a lambda factor to calculate it?

Hello to all, did a little search and found no threads wich could give me a clue to my question. I got a ECU parameter reader of a Lancia Delta Integrale, wich is able to give a read out of the following parameters: - Absolute manifold pressure in mmHG - Air temperature in °C - Injector pulse...