270 ohm resistor, whats it for? Options

[tomh]

I have a 2.0 GA in my 72 with the proper ECU and harness.Do I need the 270 ohm resistor on my head temp wire?It runs a little chuncky on low end but has lots of rev and power on top.Will the resistor help with smoothing out the whole range of power.
Why do some systems have it and others do not?

[realred914]

you need to find out if yoru engine needs the resistor or not, it depends on which FI systemn you have. the were different for different years, the resistor is supposed to work with the stock 1973 FI system, not the 1974 system. the two systems had different brains, MPS , head temp sendor, distributor, etc... and maybe some other things. you need to read up on which brain MPS temp sendor etc... that you have and make sure that they are all matched together. you need to locate the part numbers on these units to be sure. Anders website has the part numbers for all these components. so see what you got, then we can tell if the resistor is supposed to be there or not.

you also got to make sure all the componensts are working right and calibraitions is ok. putting an extra resistor on to help some probelm may not be the right thing unless your sure all the other stuff is right. remeber the added resistor richens the mixture across a hole range of conditions, that might not be right for you

time for a complete inventory of what you have, seeing as the 1972 car did not come with the 2.0 liter motor, you shoudl take some time and confirm what you got is all for the same engien.


good luck