It was Pacific Racway's opening day yesterday, so I bolted on the drag radials, pulled non-essentials out of my '07 GT (spare, jack, rear seat, etc.) and braved a bit of light rain with hopes of a personal best run.
Took my handheld tuner so I could play with timing. My supercharger is not intercooled, so my custom dyno tune has just 14 degrees of timing in it. On the dyno, going with 16 resulted in the PCM pulling timing at WOT, so we went with 14 to be safe. However, at the track, I wanted to try a few different settings. I got three runs in...
16 degrees of timing. Computer pulled timing on me and the car just didn't feel right. Ran 12.425 @ 111.61 in the 1/4 mile on a 1.919 sixty foot.
14 degrees of timing. This is my normal street setting. Car hooked good and ran a 12.250 @ 112.18 on a 1.876 sixty foot.
15 degrees of timing. I knew it was my best run before I even got to the traps! Finished with a 12.110 @ 112.51 on a 1.819 sixty foot. This was the sweet spot!
The track was well prepped. Lots of VHT traction compound. I just installed a line lock recently so the drag radials were working their magic at 20 psi and hooking perfectly all day.
I was really hoping to see an 11.999 or better, but I'm about 20-30 rwhp short of doing so. Gives me something to work for this season!
Here's the slip from my best pass yesterday (I'm car #951 in the left lane)...
Took my handheld tuner so I could play with timing. My supercharger is not intercooled, so my custom dyno tune has just 14 degrees of timing in it. On the dyno, going with 16 resulted in the PCM pulling timing at WOT, so we went with 14 to be safe. However, at the track, I wanted to try a few different settings. I got three runs in...
16 degrees of timing. Computer pulled timing on me and the car just didn't feel right. Ran 12.425 @ 111.61 in the 1/4 mile on a 1.919 sixty foot.
14 degrees of timing. This is my normal street setting. Car hooked good and ran a 12.250 @ 112.18 on a 1.876 sixty foot.
15 degrees of timing. I knew it was my best run before I even got to the traps! Finished with a 12.110 @ 112.51 on a 1.819 sixty foot. This was the sweet spot!
The track was well prepped. Lots of VHT traction compound. I just installed a line lock recently so the drag radials were working their magic at 20 psi and hooking perfectly all day.
I was really hoping to see an 11.999 or better, but I'm about 20-30 rwhp short of doing so. Gives me something to work for this season!
Here's the slip from my best pass yesterday (I'm car #951 in the left lane)...
