eec tuner problem

super red91

Registered User
I bought an eec tuner for my 91 sc after adding just about every bolt on. When i had it on the car it made it run like crap but when i took it off it ran much better. I still want to use it so i can get a file from Dr. fred and also to adjust for the #42's injectors and my rich problem. What is the reason that the tuner is makig my car run bad? Is it the wrong one for my computer? If so then how or can i change it?
 
tuner

The first thing everyone will tell you is to be sure that your connections is clean. Clean, it and re clean it and use electrical connector cleaner on both sides. That waxy stuff will mess up the connection and make in run bad. If your connection is clean and your still running bad, you may have the wrong EEC format on your file. I told Fred my EEC was a N1A and it turned out to be a W1M or somthing like that. When I figured out my mistake, he wrote me a program for the right format and it ran great.
 
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