datamaster dyno calculation
Thread Starter
Racer
Joined: Oct 2008
Posts: 423
Likes: 48
From: winchester Virginia
datamaster dyno calculation
Does anyone have any experience with the datamaster dyno calculator. I recently tried their software on my 92 6 speed convertible and I tried a full throtle 2nd gear run from about 15 to 75 mph and got a peak HP of only about 210 at about 5K rpm. I put in proper gear ratios and 811 for tire rotations and left the rest of the corrections enabled. The car runs fine and all engine data seems to be within reasonable bounds. I live at 8500 feet, but I assume that the ECM would correct for the altitude. The only thing I noticed was that the EGR cycles between 0 and 100% during cruising with no intermediate values. I don't know if the EGR should show intermediate values or not and I don't think that the EGR could affect peak HP but...?.
Any comments on the accuracy of this dyno simulator would be appreciated or any advice on what other parameters to check.
Any comments on the accuracy of this dyno simulator would be appreciated or any advice on what other parameters to check.
Safety Car
Joined: Apr 2003
Posts: 3,793
Likes: 9
From: VA
Thread Starter
Racer
Joined: Oct 2008
Posts: 423
Likes: 48
From: winchester Virginia
Thanks for the link (Croceus) which reminded me that the ECM can correct the fuel air mixture as a function of increased altitude but (obviously to me now) not for the amount of O2 per volume of air at altitude. Just like animals, cars can breath in only so many liters of air and at high altitude there is less O2 to work with. So sell the house and move to lower altitude or buy forced induction system. I can tell the wife that the latter is cheaper!!
