i've also got the (75-76) 052 ecu, mps recalibrated to the 2056. which cht is avalible and/or would work best? copy/pasted below is the possibilities from the info. section:
Cylinder Head Temperature Sensor
1974 - 1976 Discrepancies: The PPC lists this Porsche/VW part number for the engines below. The BGDIP cross-references this VW part number to the
0 280 130 003 sensor, which is the sensor for the 1968-1969 Type 3's. I checked with my local Bosch supplier and the ...003 is the part he found for this Porsche/WV number . The DSM lists the
0 280 130 012 sensor for these engines and years, but not for the 1974 2.0L. Note that the
0 280 130 003 sensor is used by some 914 owners to get a richer cold engine mixture.
W0 000 001 => W0 250 000
EA0 000 001 => EA0 098 793
EB0 000 001 => EB0 009 703
GA0 006 766 => GA0 015 021
GC0 000 001 => GC0 006 946