Racing parameters:
date: 3/13/2004
track: Englishtown,NJ
elevation: 86 ft
air temp: ~40 F
humidity: n/a
barometer: n/a
total racing weight: 3520 lbs w/ driver(140 lbs) & no passenger seat & empty trunk
fuel: 110 octane race gas, 1/4 tank
wheels/tires: 15x7.0 Volk TE-37's w/ 275 wide BFG drag radials @ 22 psi air
12.57 @ 115 run:
60 ft time: 2.12
launch boost: n/a
launch rpm: 2695, using foot brakes & e-brake handle
boost controller: set=80, gain=15
peak boost: 18.5 psi
shift points: "D" drive w/ overdrive "OFF"
AFC changes: rich from 3000 to 4000, lean from 4000 & higher rpms
NOTES: It was a very cold day. High 30's and low 40 degree air temps with low 30's wind chill factor. Great for the more but not for the tires.
Alot of wheel spin on this launch and all through 1st gear. Also against alot of headwind going down the track. And you'll notice some crazy
injector duty cylce graphs. I'm not sure if this is truly a problem or if it's a problem in datalogging from my m500 Palm Pilot. My Sony VAIO
laptop did not experience back in FEB when I datalogged from it. I'll need to do more tests both ways next time.
12.32 @ 114 run:
60 ft time: 1.94
launch boost: n/a
launch rpm: 2350, using foot brakes only
boost controller: set=80, gain=15
peak boost: 18.5 psi
shift points: "D" drive w/ overdrive "OFF"
AFC changes: rich from 3000 to 4000, lean from 4000 & higher rpms
NOTES: Leaned out the AFC by another 1% above 4000 rpms. Less wheel spin on the launch due to lower rpm launch.
Also against alot of headwind going down the track.
12.35 @ 114 run:
60 ft time: 1.97
launch boost: n/a
launch rpm: 2400, using foot brakes only
boost controller: set=80, gain=15
peak boost: 18.5 psi
shift points: "D" drive w/ overdrive "OFF"
AFC changes: rich from 3000 to 4000, lean from 4000 & higher rpms (unchanged)
NOTES: Same AFC setting as previous run. Same amount of wheel spin on launch as previous run.
Also against alot of headwind going down the track.
12.65 @ 114 run:
60 ft time: 2.021
launch boost: negative 1 psi
launch rpm: 2425, using foot brakes only
14 psi boost @ rpm: 4100
boost controller: set=80, gain=15
peak boost: 18.5 psi
shift points: "D" drive w/ overdrive "OFF"
AFC changes: rich from 3000 to 4000, lean from 4000 & higher rpms
NOTES: Leaned out the AFC by another 1% above 4000 rpms. Alot of wheel spin on the launch and all through 1st gear.
The headwind died.