Gm Tbi Swap Wiring Diagram

There will be a lot of extra things don t worry about them now grab it all as whole as you can.

Gm tbi swap wiring diagram. First you need to go to junk yard and pull the engine efi harness or complete system if you can. It included the tbi unit the intake manifold the ecm computer the distributor the wiring harness and most of the sensors. Painless wiring makes the conversion from carburetor to tbi real easy with there fuel injection wiring harness and a parts list of everything you need to make the switch. All un needed emissions.

I ended up with a complete system from a 91 305 camaro for about 140. It turned out that people are putting gm tbi units everything from jeeps to land cruisers. The device replicates a signal to the computer. Typically technical support is limited to the customer with only a harness purchase due to the complexity of variables we have no control over.

Basic connections are standard but it is easy to customize one for your needs. Tbi wiring harness conversion. The wire harness above is for the application years 1986 91 pre 4l60e. 1992 95 tbi wire harnesses.

This is a basic tbi harness for all engines using ecm 1227747 and 1228746 type ecm many others can be used. One of the most popular efi conversions to older chevy engines or any engine for that matter is the gm tbi system using the 1227747 ecm. I jumped on ebay and starting bidding. There are many others that will do the same thing but the 1227747 is most well known and documented and will be the basis for this article.

Complete with the wiring for emissions and vss. We also have a device that will allow you to delete the vss circuit. Take the fear out of electronic fuel injection. The computer still thinks its receiving the correct pulse.

Each new harness contains in depth application specific instruction sheets clearly marked factory gm connectors labeled gxl jacketed wire gm color coding and pre fitted corrugated slit loom for an extra value and professional look.