I got to do 5 passes at Firebird International Raceway today.
- 1243 ft elevation
- 8300 lbs "race weight" (I ran with everything I carry everyday)
- 45 psi in the rear tires, 65 in the front
- 2WD launches @ 1500 - 1700 RPM (didn't want to risk my front end)
- 3 engine limps
- 2 new tunes written on the track I love EFILive!
My best time was a 15.703 @ 86.36 MPH (timeslip attached, video below). I was running against a buddy's 1997 Mitsubishi 3000GT (base engine).
[YOUTUBE]BVxYHhwLm14[/YOUTUBE]
The limps were caused by a "P0088 High Fuel Rail Pressure". For some reason it didn't like holding 179 MPa for 1/4 mile. I dropped the commanded pressure to 174 MPa, which did better, only limping once when I ran 2 consecutive passes without turning the truck off first. I guess I need that LBZ CP3, regulator, and pressure relief valve I have been wanting...
I also attached the log of my best run (you can see it limp at the tail end when the fuel cuts out but the throttle is still 100%). I didn't want to do many more because I think my transmission is starting to hate me, and I DON'T want to limp that!
So, any suggestions? I know I need a transmission, and it is next on my list. I probably could have run a TON more fuel, the tune I ran clouds out the sun back in Prescott, but was barely a haze at Firebird. Overall I was pleased for a completely homemade tune. In retrospect, I wish I had done a run stock to see how much my tune really helped.
- 1243 ft elevation
- 8300 lbs "race weight" (I ran with everything I carry everyday)
- 45 psi in the rear tires, 65 in the front
- 2WD launches @ 1500 - 1700 RPM (didn't want to risk my front end)
- 3 engine limps
- 2 new tunes written on the track I love EFILive!
My best time was a 15.703 @ 86.36 MPH (timeslip attached, video below). I was running against a buddy's 1997 Mitsubishi 3000GT (base engine).
[YOUTUBE]BVxYHhwLm14[/YOUTUBE]
The limps were caused by a "P0088 High Fuel Rail Pressure". For some reason it didn't like holding 179 MPa for 1/4 mile. I dropped the commanded pressure to 174 MPa, which did better, only limping once when I ran 2 consecutive passes without turning the truck off first. I guess I need that LBZ CP3, regulator, and pressure relief valve I have been wanting...
I also attached the log of my best run (you can see it limp at the tail end when the fuel cuts out but the throttle is still 100%). I didn't want to do many more because I think my transmission is starting to hate me, and I DON'T want to limp that!
So, any suggestions? I know I need a transmission, and it is next on my list. I probably could have run a TON more fuel, the tune I ran clouds out the sun back in Prescott, but was barely a haze at Firebird. Overall I was pleased for a completely homemade tune. In retrospect, I wish I had done a run stock to see how much my tune really helped.