PCM Diagnostics & Tuning HP Tuners | Holley | Diablo

Holley Install Question

Thread Tools
 
Search this Thread
 
Old Oct 31, 2015 | 11:09 AM
  #1  
Bill00Formula's Avatar
Thread Starter
TECH Fanatic
iTrader: (4)
 
Joined: Nov 2001
Posts: 1,066
Likes: 11
From: West Palm Beach, Fl
Default Holley Install Question

So when the Holley Dominator EFI is installed does the entire car have to be rewired? It seems like you would loose all the nice features that came with the car.
Reply
Old Oct 31, 2015 | 11:17 AM
  #2  
soundengineer's Avatar
8 Second Club
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (16)
 
Joined: Jul 2003
Posts: 4,651
Likes: 17
From: Chicago IL
Default

no...the only thing that gets rewired is the engine management and transmission control

all of your other stuff is controlled by a body control module...completely separate from the engine/transmission control
Reply
Old Oct 31, 2015 | 12:10 PM
  #3  
Bill00Formula's Avatar
Thread Starter
TECH Fanatic
iTrader: (4)
 
Joined: Nov 2001
Posts: 1,066
Likes: 11
From: West Palm Beach, Fl
Default

Ok, thanks, that's good news. Looking at all these builds it looks like everything is being replaced.
Reply
Old Oct 31, 2015 | 12:15 PM
  #4  
soundengineer's Avatar
8 Second Club
20 Year Member
Photogenic
Photoriffic
Shutterbug
iTrader: (16)
 
Joined: Jul 2003
Posts: 4,651
Likes: 17
From: Chicago IL
Default

sometimes you have to piggy back a few things to get the gauges to all work....because the dash gauges are all serial data based and only talk to the stock ECU....

piggy back is not an easy thing to do as you have to do it a very specific way to make it so the holley works properly...piggy back is not as simple as just splicing wires to both ECUs
many cannot be shared and you have to get all the grounds to the proper place and not share them between ecu's....
Reply




All times are GMT -5. The time now is 07:22 AM.

story-0
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin

Slideshow: This heavily modified 1971 Camaro mixes classic muscle car styling with a fifth-generation Camaro interior and modern LS3 power.

By Verdad Gallardo | 2026-05-12 18:06:42


VIEW MORE
story-1
6 Common C5 Corvette Failures and What's Involved In Repairing Them

Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.

By Pouria Savadkouei | 2026-05-07 18:44:57


VIEW MORE
story-2
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.

By Verdad Gallardo | 2026-04-21 13:57:02


VIEW MORE
story-3
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...

By Pouria Savadkouei | 2026-04-16 10:05:15


VIEW MORE
story-4
Top 10 Most Powerful Chevy Trucks Ever Made!

Slideshow: Top ten most powerful Chevy trucks ever made

By | 2026-03-25 09:22:26


VIEW MORE
story-5
Hennessey's New Supercharged Silverado ZR2 Has 700 HP

Slideshow: Hennessey has turned the Silverado ZR2 into a 700-hp off-road monster with supercharged V8 power and a limited production run.

By Verdad Gallardo | 2026-03-24 18:57:52


VIEW MORE
story-6
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.

By Verdad Gallardo | 2026-03-23 18:53:41


VIEW MORE
story-7
Awesome K5 Blazer Restomod Comes With C7 Corvette Power

Slideshow: A heavily reworked 1972 K5 Blazer swaps its off-road roots for a low-slung street-focused build with modern V8 power.

By Verdad Gallardo | 2026-03-09 18:08:45


VIEW MORE
story-8
10 Camaros You Should Never Buy

Slideshow: There are thousands of used Camaros on the market but we think you should avoid these 10

By | 2026-02-17 17:09:30


VIEW MORE
story-9
10 LS Engine Myths That Refuse to Die

Slideshows: Which one of these myths do you believe?

By Verdad Gallardo | 2026-01-28 18:10:11


VIEW MORE