ShapeGSX
20+ Year Contributor
- 698
- 10
- Jun 13, 2002
-
Worcester,
Massachusetts
It was a rare combination of a cold night and great traction at New England Dragway. They had a killer track rental during the day. And they really prep the track for track rentals.
First pass out, I launched it pretty hard and it stuck hard. But the knock light flashed in 4th, and I let off and got back in it.
60' 1.732
330' 5.010
1/8 7.675 @ 93.86mph
1000 9.957
1/4 11.958 @ 112.81mph
I knew the next pass would be it since traction goes away so fast on street nights. I turned the boost down since I saw 12 degrees of retard in 4th. I got 2 more gallons of 117 Sunoco. I retarded the timing at 5500RPM and 6000RPM, where I saw the onset of knock, but left the 6500 to 7000RPM sliders at +6 degrees. And I went for it on the launch with a stutterbox setting of 4750RPM.
60' 1.676
330' 4.946
1/8 7.620 @ 93.69
1000 9.904
1/4 11.825 @ 117.55
I changed a few things in the past couple weeks. One was to get rid of that 2.25" resonator in my RSR exhaust and replace both resonators with 3" pipe (thanks again, Otto!). And the other was to install a 3" MAF to turbo pipe to replace my 2.25" pipe. Between those things and the cool air, I think that is where my mph came from. I'm still running the 272I/264E cam setup.
The stutterbox really sounds nasty with my new exhaust pipe.
I'll probably head back to the track next Wed for our local DSM club night. I think there is a little more left in it. I turned the boost up a little on my last pass, and my airflow and my steady-state boost went up. I was in the 42 to 43lb/min range all night, and boost was around 24.5psi with a spike to over 30psi.
My car is still 3150lbs without me in it. Maybe I'll get into lightening it some day.
First pass out, I launched it pretty hard and it stuck hard. But the knock light flashed in 4th, and I let off and got back in it.
60' 1.732
330' 5.010
1/8 7.675 @ 93.86mph
1000 9.957
1/4 11.958 @ 112.81mph
I knew the next pass would be it since traction goes away so fast on street nights. I turned the boost down since I saw 12 degrees of retard in 4th. I got 2 more gallons of 117 Sunoco. I retarded the timing at 5500RPM and 6000RPM, where I saw the onset of knock, but left the 6500 to 7000RPM sliders at +6 degrees. And I went for it on the launch with a stutterbox setting of 4750RPM.
60' 1.676
330' 4.946
1/8 7.620 @ 93.69
1000 9.904
1/4 11.825 @ 117.55
I changed a few things in the past couple weeks. One was to get rid of that 2.25" resonator in my RSR exhaust and replace both resonators with 3" pipe (thanks again, Otto!). And the other was to install a 3" MAF to turbo pipe to replace my 2.25" pipe. Between those things and the cool air, I think that is where my mph came from. I'm still running the 272I/264E cam setup.
The stutterbox really sounds nasty with my new exhaust pipe.

I'll probably head back to the track next Wed for our local DSM club night. I think there is a little more left in it. I turned the boost up a little on my last pass, and my airflow and my steady-state boost went up. I was in the 42 to 43lb/min range all night, and boost was around 24.5psi with a spike to over 30psi.
My car is still 3150lbs without me in it. Maybe I'll get into lightening it some day.

what are you running for fuel? 660's? what about a fpr? any other bolt on's?
That is why I have 660s now.