These are the first two of four runs. The DYNORUN.001 is the baseline run. The mods on the car for these runs are the GReddy cat-back and my custom made cold air pipe. The DYNORUN.002 is a run directly after .001, but with NOS (70-75HP). It's curves are almost identical to the non-NOS run except the torque curve comes in a little higher at the beginning. The choppy curve may be caused by the sudden N2O injection or possibly the heat range of the plugs according to the tech at Racecraft. He noted that they sometimes run plugs as cold as a 9 heat range in Mustangs (Racecraft is a 5.0L specialist)

The vertical dotted line on the 6600 rpm line is the marker denoting the exact figures at 6600 rpm (where I shift for racing). As you can see, there is a severe drop-off of torque after about 6800 rpm. Well, I should say more than the normal slope, which is bad enough!

Two notes here: first, the horsepower drop-off after peak is much less using NOS (5HP loss) than not using it (11.6HP loss)--measured from peak to the 6600 mark. The torque curves still drop off at an almost identical rate. The second note is that the peaks are much earlier in the powerband when using NOS. Notice that the horsepower curve peaks at about 5300rpm on NOS and at about 5500 without it. The torque curve peaks at about 4400 on NOS and at about 4800 off the bottle.

This site is made possible by Geocities.