Paul,
In the installation instructions of Tracy's EC2, he mentions that you will need to buy a SPDT automotive accessory relay (10 amp or higher) for injector staging control.  He also states that these are available at most auto parts stores, but when I asked for this at several local parts shops nobody knew what to give me.  They wanted to know what vehicle make and model and what it is used for in the car.  Can you give me any tips on what exactly to ask for?

And by the way, if anyone needs to buy those expensive little GM coils and connectors they can go to the following website:  http://www.rockauto.com/
Coils -    GM part# 12558948  or  AC Delco part# D580    $ 31.90 ea.
Connectors -     GM part# 12102741  or  AC Delco part# PT368    $ 15.29 ea.

Thanks,
Don Mitchell

 
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