I currently have an 85 iroc with a 383 stroker and need to upgrade to a 90-92 ecm speed-density so as to have tuning ability and learn how to burn proms. I have read articles on upgrading an 85 ecm to an 86-89 and an article on upgrading a 86 to an 90-92. What is the procedure for an 85 ecm maf to an 90-92 speed density ecm. I dont know because the 85 ecm has the separate burn off module, which will be deleted, and it has a cold start injector that I'm pretty sure the 90-92 ecm did not. I would like to know if I can use the procedures for the 86 to 90 ecm swap or if I have to do more because it is an 85 ecm. Any help would be appreciated, posts or a certain tech article. Just point me in the correct location.

 

I'm sure someone has some sort of direction?

 

could somebody who has done the maf to sd swap tell me if I can simply change to a 730 computer as the tech article explains how to go from a 165 ecm 86-89 to a 90-92, 730 ecm, even though I have an 85, 870 ecm.

 

Am I on the wrong board to ask this question?

 

The MAF to SD article covering the 86-89 to 90-92 swap should be close enough to help you out. You can block off or just unplug the cold-start injector as it works with a temp switch and not by the computer.

 

Thank you very much for the reply Kevin.

 

More info:

My 85 Z28 and Changing a '165 ECM to a '730

Link at top of that page takes you to the '85 info.

RBob.