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A1337STI · 2011-02-11, 10:10 AM

So as the title says, I'm attempting to use a bunch of different year parts.

From the research i've done (not enough) the 2001 ECU requires a MAP (manifold Air Pressure) sensor that my 99 motor does not have, I've been told that the 99 intake manifold has a Freeze Plug where the 00/01 manifold has a MAP sensor.

I think the Mass Air Flow Sensor is the same ? but i've been unable to confirm that

I'm guessing i need a new "dash harness" because my 93 has an ODB1 and the 01 ECU is ODB2 so i'll probably need a new gauge cluster too right ? But the rear section of my harness should be good for lights, signals, hazards. i've read somewhere the rear defroster may not be compatible (93 harness to 01 )

I've yet to find any info about if the ECU is gonna care the transmission is a 98. i know my 93 transmission has a reverse sensor, and i think it Might have a neutral position sensor, but I'm not certain. I believe the 98 transmission went to an electronic speedo sensor / cable, where as my 93 is mechanical.

2011-02-11, 10:10 AM	#1
A1337STI EJ205 Join Date: Jan 2006 Location: Reno, NV Posts: 1,840 Car: Impreza and an Impreza Class: AS / CRS PerfStock "pedal on the right"	RS : 98 transmission, 99 motor, 01 ecu So as the title says, I'm attempting to use a bunch of different year parts. From the research i've done (not enough) the 2001 ECU requires a MAP (manifold Air Pressure) sensor that my 99 motor does not have, I've been told that the 99 intake manifold has a Freeze Plug where the 00/01 manifold has a MAP sensor. I think the Mass Air Flow Sensor is the same ? but i've been unable to confirm that I'm guessing i need a new "dash harness" because my 93 has an ODB1 and the 01 ECU is ODB2 so i'll probably need a new gauge cluster too right ? But the rear section of my harness should be good for lights, signals, hazards. i've read somewhere the rear defroster may not be compatible (93 harness to 01 ) I've yet to find any info about if the ECU is gonna care the transmission is a 98. i know my 93 transmission has a reverse sensor, and i think it Might have a neutral position sensor, but I'm not certain. I believe the 98 transmission went to an electronic speedo sensor / cable, where as my 93 is mechanical. __________________ Fighting uphill battles, one bullet at a time!