Stand Alone Efi Harness

We build direct factory fit harnesses for the 4th gen f body as well as for the 1998 2003 s10.

Stand alone efi harness.

This is a speed density non mass air flow version of our tdz 75. These harnesses include the gen ii lt1 lt4 gen iii 24x ls1 ls6 and vortec truck engines as well as gen iv 58x ls2 ls3 ls7 vortec and gen v lt ecotec3 engines. Howell efi complete gm based universal tbi kits accessories. Efi 58x gm gen iv e38 ecm.

Efi 24x gm gen iv e40 ecm. Efi 24x gm gen iii ls1 pcm. Efi 24x gm gen iii ls1 pcm. Typically technical support is limited to the customer with only a harness purchase due to the complexity of variables we have no control over.

Efi 24x holley dominator. All psi harnesses are made in the usa. Tdz 75sd ford 5 0 speed density harness. Gm mpi products gm tpi products gm cpi products gm lt1 products 1992 1997.

Now holley efi products power these cars and are dominating the performance world. We build standalone harnesses as well as full direct factory fit harnesses for the gen ii lt1 engine with both the original pcm and with the 24x conversion utilizing the ls1 pcm. Covering all gen3 hemi s 5 7 6 1 6 4l our plug and play harness comes dyno tested and with a 3 wire hook up your running. Weatherproof fuse and relay box holds fan and fuel pump relays with outputs all ready for you to connect.

It is really that simple with the factory fit. Basic connections are standard but it is easy to customize one for your needs. Efi 58x gm gen iv e67 ecm. We can also customize the harness to any fit whatever you need.

For over 30 years we have produced our wiring harnesses right here in america helping enthusiasts get their street rods muscle cars off road rigs race cars and many other rides wired up safely. This is a basic tbi harness for all engines using ecm 1227747 and 1228746 type ecm many others can be used. Holley hp efi ecu harness kit for a ford v8. Holley products for gm s popular ls engine are dominating the ls scene as well.

Holley s products also include performance fuel pumps intake manifolds engine dress up products for street performance race and marine applications. Works with speed density equipped 302 engines. Efi 24x holley hp. Painless is proud to be the wiring choice of stacey david.

Psi sells standalone wiring harnesses for gm gen ii iii iv v ls lt based engines and transmissions. This stand alone ford fuel injection harness is sized exclusively for both mustangs and broncos. Aem infinity 8 10 12 harness. This kit is a direct fit and is finished off with hi temp zip loom and harness wrap tape.

Holley efi systems harnesses. Swap makes gen3 hemi standalone easy. The fit and finish of swaps standalone hemi harness is show.