Generation IV Internal Engine 2005-2014 LS2 | LS3 | LS7 | L92 | LS9

LS7 PCM & Harness

Thread Tools
 
Search this Thread
 
Old Oct 27, 2005 | 10:01 AM
  #1  
Builder's Avatar
Thread Starter
TECH Regular
 
Joined: Nov 2004
Posts: 415
Likes: 0
From: Reno, NV
Default LS7 PCM & Harness

Until there is a specific location for this information, perhaps we should post what we think will work. My LS7 will be here tomorrow and going in the car next month.

PCM options:
BigStuff3
Accel DFI Gen 7

Harness options:
GM
?
Reply
Old Oct 27, 2005 | 03:41 PM
  #2  
Builder's Avatar
Thread Starter
TECH Regular
 
Joined: Nov 2004
Posts: 415
Likes: 0
From: Reno, NV
Default

The Delphi MEFI 4B may work as well. I don't know about the harness yet.

Last edited by Builder; Oct 28, 2005 at 02:39 AM.
Reply
Old Oct 28, 2005 | 02:46 AM
  #3  
Bink's Avatar
TECH Addict
20 Year Member
 
Joined: Jul 2002
Posts: 2,261
Likes: 0
Default

Originally Posted by parts@sdpc
First round of crate LS7's from GM --- approximatley 100 engines. Demand is much greater than the supply! We will see some more availability after the first of the year and I expect the pent-up demand will have subsided some by then. But, the supply will still be limited. We have been working with a supplier on ECU's, prototypes are finshed! I think we will have some units here by mid-December.
Here's a link -> https://ls1tech.com/forums/generation-iv-internal-engine/399865-ls7-crate-available.html
Reply
Old Oct 28, 2005 | 10:56 AM
  #4  
Builder's Avatar
Thread Starter
TECH Regular
 
Joined: Nov 2004
Posts: 415
Likes: 0
From: Reno, NV
Default

Thanks, Blink. It appears there are a number of companies that have an ECU and harness for the LS7 already available. All are using the Delphi MEFI-4B and pricing starts around $1,895. Some offer more than others with regard to software and programming. More info to come, but, this will be the path I take unless a sequential system becomes available. The MEFI-4B is a time-tested unit that suits my application (no specific ECU requirements). It may work well for swaps, too.
Reply
Old Oct 28, 2005 | 11:23 AM
  #5  
Bink's Avatar
TECH Addict
20 Year Member
 
Joined: Jul 2002
Posts: 2,261
Likes: 0
Default

Keep us updated on your Ultima GTR. That is one mean machine!!
Reply
Old Oct 28, 2005 | 12:09 PM
  #6  
hitmeoff's Avatar
TECH Apprentice
 
Joined: Jul 2004
Posts: 318
Likes: 0
From: Orance County, CA
Default

That Ultima is soooo f'n G!!!!!
Reply
Old Oct 28, 2005 | 01:30 PM
  #7  
John B's Avatar
Moderator
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (10)
 
Joined: Nov 2001
Posts: 3,264
Likes: 21
From: Phoenix, AZ
Default

It appears there are a number of companies that have an ECU and harness for the LS7 already available
Scott, could you please list them for us?
Reply
Old Oct 28, 2005 | 09:59 PM
  #8  
Builder's Avatar
Thread Starter
TECH Regular
 
Joined: Nov 2004
Posts: 415
Likes: 0
From: Reno, NV
Default

Originally Posted by John B
Scott, could you please list them for us?
There were other Delphi dealers, too, but these were the folks that really seamed to know what they were talking about. They have LS7 installations running. Todd from Autigent was on his way to SEMA, but really offered extensive knowledge. They are also deeply involved with GM's racing program.
Reply
LS1 Tech Stories

The Best V8 Stories One Small Block at Time

story-0

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

 Verdad Gallardo
story-1

6 Common C5 Corvette Failures and What's Involved In Repairing Them

 Pouria Savadkouei
story-2

Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph

 Verdad Gallardo
story-3

Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked

 Pouria Savadkouei
story-4

Top 10 Most Powerful Chevy Trucks Ever Made!

 
story-5

Hennessey's New Supercharged Silverado ZR2 Has 700 HP

 Verdad Gallardo
story-6

Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes

 Verdad Gallardo
story-7

Awesome K5 Blazer Restomod Comes With C7 Corvette Power

 Verdad Gallardo
story-8

10 Camaros You Should Never Buy

 
story-9

10 LS Engine Myths That Refuse to Die

 Verdad Gallardo
Old Oct 29, 2005 | 11:51 AM
  #9  
John B's Avatar
Moderator
20 Year Member
Photogenic
Photoriffic
Liked
iTrader: (10)
 
Joined: Nov 2001
Posts: 3,264
Likes: 21
From: Phoenix, AZ
Default

Thanks Scott. Looks like there's one more that ha one in work http://www.fuel-injection.com/HomePage.htm
Reply
Old Oct 29, 2005 | 07:18 PM
  #10  
Gary Z's Avatar
10 Second Club
 
Joined: Nov 2002
Posts: 1,471
Likes: 3
From: Berkeley, California
Default

Electromotive
Reply
Old Oct 30, 2005 | 03:43 PM
  #11  
MEFISTUFF's Avatar
Teching In
 
Joined: May 2005
Posts: 36
Likes: 0
Default

Try r&d dyno in Gardena, He Has Mefi 4 ecu's, software, And Harnesses for
ls7 as well as ls1,2,etc
Reply
Old Nov 1, 2005 | 04:25 PM
  #12  
pcf_mark's Avatar
On The Tree
iTrader: (1)
 
Joined: Oct 2005
Posts: 171
Likes: 0
From: Hilltown
Default

Do you have contact info for R & D dyno? some of the link above are not too clear about their goal. I want a controller that gets my LS7 running out of the box that I can tweak with some available software to make it run perfect with my combination. Not too picky eh?

Thanks!
Reply
Old Nov 1, 2005 | 09:50 PM
  #13  
Builder's Avatar
Thread Starter
TECH Regular
 
Joined: Nov 2004
Posts: 415
Likes: 0
From: Reno, NV
Default

Originally Posted by Gary Z
Nice stuff, that Electromotive. I know a guy that's got it on his turbo Ultima CANAM. I think they use a bolt-on 58-tooth reluctor as standard.
Reply
Old Nov 2, 2005 | 04:25 PM
  #14  
MEFISTUFF's Avatar
Teching In
 
Joined: May 2005
Posts: 36
Likes: 0
Default

R&D dyno 310 516 1003
Reply
Old Nov 18, 2005 | 04:36 PM
  #15  
Builder's Avatar
Thread Starter
TECH Regular
 
Joined: Nov 2004
Posts: 415
Likes: 0
From: Reno, NV
Default

LS7 PCM security was cracked today. The next step is to understand the programming. The vendor has asked to remain un-named, however they are well-known company. They say they'll be offering the PCM and harness in about 30 days. No pricing yet.
Reply
Old Nov 18, 2005 | 06:07 PM
  #16  
bmfcamaro's Avatar
TECH Fanatic
iTrader: (1)
 
Joined: Nov 2003
Posts: 1,143
Likes: 0
Default

there is a company that said there new hardware will work with LS2 and LS7 stuff. i would imagine the same that you are talking about.
Reply
Old Nov 18, 2005 | 06:59 PM
  #17  
Builder's Avatar
Thread Starter
TECH Regular
 
Joined: Nov 2004
Posts: 415
Likes: 0
From: Reno, NV
Default

Originally Posted by bmfcamaro
there is a company that said there new hardware will work with LS2 and LS7 stuff. i would imagine the same that you are talking about.
It's not a company that makes an ECU or a stock PCM re-programmer. They are simply tweaking the GM unit and will be selling it with the necessary programming for swaps. In my case, all I need is fuel and spark (and a descent power tune)...but, none of the body control, traction control, etc. is required for my "swap". This type of programming won't be good for a C6-Z06, but would be good for a C5 or F-body (I think). We'll have to see what they come up with...
Reply
Old Nov 18, 2005 | 07:49 PM
  #18  
98blackSS's Avatar
TECH Resident
 
Joined: Dec 2001
Posts: 922
Likes: 1
From: Lexington Park, MD
Default

Thanks Scott.. you have mail
Reply
Old Nov 18, 2005 | 09:28 PM
  #19  
LS2 V8 Miata's Avatar
On The Tree
 
Joined: Jun 2005
Posts: 189
Likes: 0
From: Prescott, Arizona
Default Already been done, Modded OEM

The 2006 LS2 crate engines are already being run "stand alone" (put the LS2 engine package in any car) with GM OEM PCMs running Delphi 5 wire MAFs and aftermarket wiring harnesses, including running the 90 MM FBW Throttle body. Just not being done by GM people or GM marketers.

Other independent guys are frenzied out trying to be first with the right power MAP in a MEFI IV and wiring package for these motors, don't hold your breath and get ready to shell out for a cable operated 90 MM throttle body.
Reply
Old Nov 18, 2005 | 10:13 PM
  #20  
98blackSS's Avatar
TECH Resident
 
Joined: Dec 2001
Posts: 922
Likes: 1
From: Lexington Park, MD
Default

Originally Posted by LS2 V8 Miata
The 2006 LS2 crate engines are already being run "stand alone" (put the LS2 engine package in any car) with GM OEM PCMs running Delphi 5 wire MAFs and aftermarket wiring harnesses, including running the 90 MM FBW Throttle body. Just not being done by GM people or GM marketers.

Other independent guys are frenzied out trying to be first with the right power MAP in a MEFI IV and wiring package for these motors, don't hold your breath and get ready to shell out for a cable operated 90 MM throttle body.
Which OEM PCM are you referring to?

Just curious
Reply



All times are GMT -5. The time now is 11:28 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