My Holley HP EFI installation thread

white95 · Sep 3, 2016

So, what the hell is White95 doing NOW? :evil: Those who have followed my build thread know that my car sometimes sits for months, if not years at a time. A lot of the times is because of life getting in the way but at times its waiting for a tune. In fact, I've never had the car tuned since I had the Pro Comps ported and installed the TFS-R intake. That has been nerely two years. Now that I'm upgrading the complete HCI, I've decided to rip out the factory engine management system in favor of a Holley HP EFI system, PART# 550-604, but why? The Holley setup is much newer technology, nearly plug-n-play, user friendly with modest tuning knowledge, 'self-learns' itself for the start-up and drive ability tune. The software does allow for fine tuning on the dyno. It interfaces with their own 7" LCD display that i'll couple with a custom gauge cluster from Steinmann Performance. Well, eventually. This thread will be fluid and any questions will be answered. (Look mcglsr2 , colorful hyperlinks!)

The tear down

white95 · Sep 3, 2016

The engine and injector harness

This is a diagram of the main engine harness for those who like reading diagrams:

This is an overview picture of the main engine harness for those who like pictures:

The kit that have came with an over the manifold, universal Bosch style injector harness. However, after reading this thread, I realized this harness needed some work to properly work with the SEFI Ford setup.

Wiring the engine bay

The modified injector harness simply snaps on!

The stock style distributor and remote TFI module [lower left, in front of the strut tower] will be removed and replaced with this "fox style", TFI mounted distributor. This particular part came from a local guy, Stuart, who has a NASTY solid roller, 410w/AFR220/Super Victor 600 rwhp SN95 that's controlled by the same Holley HP setup I'm installing. In fact, he has been a wealth of information and we'll see pics of his GT later.

We will be referencing this drawing:

The aforementioned distributor:

Installing the TFI adaptor harness (man is this thing long or what?)

white95 · Sep 3, 2016

Main power harness

white95 · Sep 3, 2016

Relay panel

white95 · Sep 3, 2016

Interior wiring and ECU mounting

white95 · Sep 3, 2016

Miscellaneous parts and accessories

rz5.0 · Sep 3, 2016

No more QH

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B.mad · Sep 4, 2016

i don't get it.

white95 · Sep 4, 2016

B.mad said:
i don't get it.

What don't you get bro?

B.mad · Sep 4, 2016

white95 said:
What don't you get bro?

All these reserves.

sent from the toilet or from my cubicle

B.mad · Sep 4, 2016

So this is going to replace the ecu entirely? Is there a reason why? Better tune-ability?

sent from the toilet or from my cubicle

rz5.0 · Sep 4, 2016

B.mad said:
All these reserves.

sent from the toilet or from my cubicle

He will come back and fill those up.. It keeps his post from been broken up in between other peoples post

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B.mad · Sep 4, 2016

rz5.0 said:
He will come back and fill those up.. It keeps his post from been broken up in between other peoples post

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Haha i know. I was just being dumb

sent from the toilet or from my cubicle

rz5.0 · Sep 4, 2016

Ha ha.. I see

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white95 · Sep 4, 2016

B.mad - This will replace the ECU and engine control harnesses completely. The Holley system literally self-learns the tune but also allows fine tuning. This was a major selling point since my car has sat for months upon months waiting for a tune at times.

[video=youtube_share;qwkqjotkDJQ]http://youtu.be/qwkqjotkDJQ[/video]

With additional parts, I will be able to ditch the distributor/TFI altogether and run a legit DIS (distributorless ignition system) to be completely awesome.

B.mad · Sep 4, 2016

white95 said:
B.mad - This will replace the ECU and engine control harnesses completely. The Holley system literally self-learns the tune but also allows fine tuning. This was a major selling point since my car has sat for months upon months waiting for a tune at times.

[video=youtube_share;qwkqjotkDJQ]http://youtu.be/qwkqjotkDJQ[/video]

With additional parts, I will be able to ditch the distributor/TFI altogether and run a legit DIS (distributorless ignition system) to be completely awesome.

thats pretty dam cool. i like it