Did you change your wheels and tires between the runs? Differences in wheel dimension could be the cause because of this. When trying to research how to compute exact optimal rpm shift points using dyno runs and gear ratios, it was mentioned that changes in the wheel diameter and the contact surface area could affect the dyno data results.
http://www.datsuns.com/Tech/torquehp.htm
http://www.datsuns.com/Tech/whentoshift.htm
Quote:
Originally Posted by semtex
You know what kinda confuses me though? This car has made more power before. I dyno'd after the underdrive pulley went on, back in May of '09. Check it out. I hit 330whp. This either shows how finicky dynos can be. Or it shows that my car has lost power as it's broken in, had more miles put on, etc. But I only now have 10,500 miles! So it's not like it's all worn or anything.
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LABK
10' 370Z/PW/6MT/Touring Sport/Illum. Kicks/Ventureshield Ultra/F1 Pinnacle 15% Tint/PLX KIWI
Last edited by labk888; 04-25-2010 at 12:33 PM.
Reason: added link
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