The first run is usually the strongest and the second one is the weakest, then it can either go up again or go down, I think the car looses a little HP when it gets a little hotter

 

Last time I dynoed my first 2 runs were identical in peak hp and tq. The first run is sometimes the slowest because the gear oil, motor oil, andtranny fluid is colder and thicker, making more resistence. Same reason why hotlapping at the track can often result in new bests, because you get the driveline warm and more fluid.

J.

 

Motor was optimal for 2nd pull, and then got too hot for the 3rd pull. Very normal.

 

On the dynojet at Fastech....on my second run I gained 4 rwhp from the 1st and on the third run I lost 6rwhp from the second..is this normal?