Turbo Kit v1.0 for Figgy's Insight

First test run data page 2 [ Click Here for page 1 ]

I read the directions for the Palm software (auterraweb.com) and discovered that you can export the recorded data to a spreadsheet for analysis, so I did. The following plot (click on the image for a bigger view) plots the data recorded from this test drive. It is a portion of the data set, but representative of the cycles of throttle on/throttle off while remaining in 2nd gear on a moderate and reasonably constant hill climb.

Fig. 1

In this plot in Fig. 1 'lb' is lbs of boost or vacuum, mph is vehicle speed, rpm/100 is the engine RPM divided by 100, Throttle/2 is the throttle position divided by 2, and Advance is the Ignition Timing Advance parameter. I scaled RPM and Throttle so all would use the same vertical axis. I converted inHg to lbs for this chart. Click on the image to get a bigger view.

You can see the boost curves pretty well, and you can see the boost plateau just over 8 lbs or the boost peak just shy of 8 lbs of
boost. You can also see that the Ignition Timing Advance is retarding based upon the throttle position changes more dramatically than on account of any absolute value of boost. In the last cycle, when the throttle is blipped, and pressure remains the entire time at vacuum, the timing advance drops and recovers, and then on a second throttle blip drops into negative territory - all while still under vacuum (no boost). You can see that under boost timing is 'retarded' from no throttle or minor throttle, but it is not on account of any boost induced problems, just compensating for the different conditions intelligently. There is not knock retardation happening as a result of a problem. It is normal Insight behavior with or without turbo to see this behavior.

Linked Pages:

Home Test 1a Test 1b