Hey all fellow Solstice GXP and SKY RL owners with the LNF engine!
I would like to start keeping track of some boost information and see if I can correlate DIC boost levels with atmospheric conditions.
To get to that, I need to acquire data from as many of us that are willing to participate. Here is what I would propose:
- We use a standard procedure, simple in nature, to note the maximum DIC boost level.
- Simply run the procedure, note the local date and time, and the nearest airport.
Post the information here in the following format:
Boost level sustained:
Peak boost noted if different than the sustained level:
Date and time:
Nearest airport: (you can also note the city and state, or find nearest ASOS/AWOS via AirNav
Performance Modifications: (stock, exhaust/intake, stage kit or tune, etc.)
It is that simple. I can calculate the rest from there. I plan on trying to plot the boost pressure and density altitude to see if I can tell what is normal and what different modifications mean.
-Make sure your car is warm. DIC coolant temperature should be >185ºF
-Set your DIC to monitor boost. Be sure to wait until the display is active (displaying the PSI, not "BOOST" when the gage is initiating)
-Start the procedure in 3rd gear at 30-35 MPH (approximately 2000-2500 RPM)
-Go to Wide Open Throttle (WOT)
-Note the sustained and peak values you see on your DIC. Accelerate to as high a speed as you are comfortable.
-watch out for deer, pedestrians, other cars and curves. Maintain control of your car at all times, and obey traffic laws where applicable.
-Note the date and time.
Keep in mind that you may see a traction light, so you may want to do this in competitive mode to avoid this happening. If the traction control becomes active, you will lose your boost gage to the superceding traction control message.
For example, on the way in on the morning of 2/17/09:
Boost level sustained: 22
Peak boost level: same (22PSI, solid)
Date and Time: 2009.02.17 06:53 EST
Nearest Airport: Howell or Pontiac (KOZW or KPTK, Milford Proving Ground is 1/2 way between)
Performance Modifications: GM PUpgrade Kit, 6 shortening wastegate turns from stock, stock intake/exhaust
From that, we can determine the weather conditions and calculate the density altitude is -1456' for this run.
I am especially interested in stock vehicles. I think a typical LNF car is not going to be too far away from this:
-2000' (cold day below freezing) 14-15 PSI
+2000' 19 PSI (close to SAE J1349 standard)
+4000' 20 PSI
+6000' 20~21 PSI