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?

[Tom_T]

The answer is - well maybe? (IMG:style_emoticons/default/blink.gif)

It depends upon which year GA & EFI you have in your 72.

The 73 MY 2.0's were a little different than the later ones, & did require the resistor & a -017 CHT -which are now NLA!! There is also a spacer for the -017 CHT which the Factory put out as a later add-on service bulletin IIRC, which I think you can get a repro one from Brad Mayeur's 914/VW shop in Peoria IL (see member vendors section or Google for his phone #, since he doesn't have a web-business at all).

The 74 MY GAs use the -012 CHT with no resistor, but may benefit from the spacer.

You can read up more at the link below, but you really need to first find out what GA & EFI set-up you've got in there.

http://members.rennlist.com/pbanders/index.html

.... scroll down to the d-jet tech articles & start reading on "your" system.

There is also a trick apparently of running the power lead to the MPS underneath of the #3 injection tube, in order to avoid electrical interference from the coil & distributor above that spot in the engine. PM John/avidfanjpl on here for more on that one.

Being 35-40 years old, the D-jet EFI can have things go wrong, but once you got them set up right & everything in good working order, they're pretty reliable & bullet-proof - especially considering they're early examples of groundbreaking "black box" electirc FI systems which we have on many makes & models today!
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OH - and ....... (IMG:style_emoticons/default/welcome.png)