ScanmasterLT1

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Mar 17, 2007 | 07:19 AM

SpeedDensityZ

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From: Macclenny FL

ScanmasterLT1

I see scan masters for the LT1 but, they only offer them for 94-97. Why can't I use this on my 93'. Seems like a great tuning tool and I would love to start doing it myself. If it's the o2's I installed a set of heated ones on my car. Anyway. Help me out.

Mar 17, 2007 | 10:30 AM

onephatZ28

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From: Yucaipa,CA

In 1993, the computer was run via Speed Density, which measured engine speed (RPM) and load (MAP in kPa) to compute airflow requirements and then use that against the VE table to get the proper fueling for conditions. An IAT (Intake Air Temperature sensor) was also used as air density changes with temperature. In 1994 however, the computer logic was changed over to a Mass Air Flow system.

This could have something to do with it