This is just a VERY preliminary interim report, based on some early testing data done under very conservative conditions, as Lyndon works me slowly upward (we are being very cautious, due to the non-typical setup I have in my modified 04 SSR).
Attached are screen shots from my EFILive blackbox scanning. They document one run (run 011) done while commuting in to work this morning. I had to move the SSR off the shoulder into the travel line, and not hit WOT until I had some speed on in 1st gear, in order to prevent a complete loss of traction, so the run starts off showing low throttle / low speed and then you can see where the throttle setting goes to 100%.
The first image shows you a "dashboard" that the software constructs based on the logged data. This format allows you to "play" the run back as a real time event, OR step through it one frame at a time (0.1 second per frame in my case). This particular screenshot was saved after I paused the playback right after the vehilce hit 60 mph.
The second image shows you the "roll chart" format, where several of the key parameters are charted across the screen (time is horizontal axis), and again, you can analyze a static image, or manually "roll" the chart a frame at a time if you want. This particular image tries to show the entire run to 60 mph (and a bit past).
Several interesting things to note:
- There was abosultely no knock retard ever during the run.
- The MAP sensor actually registers during the run, but pegs at 30 as soon as you hit WOT.
- The 42 lb/hr injectors are actually hitting an 83% duty cycle. 80% is normally regarded as the desirable maximum duty cycle. This MIGHT be simply because Lyndon has set the air/fuel ratio on the very safe "rich" side for the time being. The alternative conclusion is that the engine is now, thanks to the supercharger, Z06 cam, and freeflowing dual exhaust, flowing WAY more air than we all anticipated.
- Those with a penchant for statistics will try to measure the 30 mph to 60 mph time. Save yourselves the trouble. I analyzed the TABULAR form of the data, and that 30 mph to 60 mph time is somewhere between 2.4 and 2.8 seconds. I say "somewhere between" because the datalogger dropped a couple of frames Lyndon thinks, when the data stream couldn't keep up with the rate of engine rpm increase. I think the 2.8 seconds is probably closer. Even this more conservative assumption means that the 0 to 60 will be mid 4s to high 4s at the WORST. Before supercharging, my 0 to 60, with a sort of "granny" start to protect the drivetrain, was 5.4 seconds. 1/4 mile was high 13s. So, I think we can now safely project high 12s easily.
The testing continues . . .
Jim G
Attached are screen shots from my EFILive blackbox scanning. They document one run (run 011) done while commuting in to work this morning. I had to move the SSR off the shoulder into the travel line, and not hit WOT until I had some speed on in 1st gear, in order to prevent a complete loss of traction, so the run starts off showing low throttle / low speed and then you can see where the throttle setting goes to 100%.
The first image shows you a "dashboard" that the software constructs based on the logged data. This format allows you to "play" the run back as a real time event, OR step through it one frame at a time (0.1 second per frame in my case). This particular screenshot was saved after I paused the playback right after the vehilce hit 60 mph.
The second image shows you the "roll chart" format, where several of the key parameters are charted across the screen (time is horizontal axis), and again, you can analyze a static image, or manually "roll" the chart a frame at a time if you want. This particular image tries to show the entire run to 60 mph (and a bit past).
Several interesting things to note:
- There was abosultely no knock retard ever during the run.
- The MAP sensor actually registers during the run, but pegs at 30 as soon as you hit WOT.
- The 42 lb/hr injectors are actually hitting an 83% duty cycle. 80% is normally regarded as the desirable maximum duty cycle. This MIGHT be simply because Lyndon has set the air/fuel ratio on the very safe "rich" side for the time being. The alternative conclusion is that the engine is now, thanks to the supercharger, Z06 cam, and freeflowing dual exhaust, flowing WAY more air than we all anticipated.
- Those with a penchant for statistics will try to measure the 30 mph to 60 mph time. Save yourselves the trouble. I analyzed the TABULAR form of the data, and that 30 mph to 60 mph time is somewhere between 2.4 and 2.8 seconds. I say "somewhere between" because the datalogger dropped a couple of frames Lyndon thinks, when the data stream couldn't keep up with the rate of engine rpm increase. I think the 2.8 seconds is probably closer. Even this more conservative assumption means that the 0 to 60 will be mid 4s to high 4s at the WORST. Before supercharging, my 0 to 60, with a sort of "granny" start to protect the drivetrain, was 5.4 seconds. 1/4 mile was high 13s. So, I think we can now safely project high 12s easily.
The testing continues . . .
Jim G