Conversions & Swaps LSX Engines in Non-LSX Vehicles
Sponsored by:
Sponsored by:

Harness and PCM $ difference

Thread Tools
 
Search this Thread
 
Old Feb 24, 2011 | 02:55 PM
  #1  
hotswap's Avatar
Thread Starter
Staging Lane
10 Year Member
iTrader: (3)
 
Joined: Apr 2010
Posts: 65
Likes: 0
From: Vegas
Default Harness and PCM $ difference

I'm looking at this harness on ebay for $500. It comes with a PCM and a base tune and sounds like a great deal. Especially after getting off the phone with a few companies like Speartech that make swap harnesses and getting prices upward of $1000 for the same package. My question is, what is the difference in these two setups? Is it the quality of materials used like wire, connectors and PCM manufacturer? I'm trying to avoid the, "I bought a cheap piece of **** and now I have to buy the expensive one I was looking at in the first place" scenario. Enlighten me. Thanks
Reply
Old Feb 24, 2011 | 03:46 PM
  #2  
ishmael's Avatar
Staging Lane
 
Joined: Jan 2011
Posts: 82
Likes: 0
Default

One of the differences is the type of connectors they use like weatherpak. Some will replace a whole wire while others will use butt connectors. How the repackage the wires and what they connect such as relays for things like ignition or an OBDII connection. Somebody is going to say you get what you pay for but I've seen at least three companies making a really good product and not charging top dollar. The people that use them have no problems with them. Find out if anyone else here has used their product. Ebay feedback is based on what the user thinks when the product first arrived. I like to know how it works two years later. Post up the link and maybe someone will be familiar with it.
If its the PSI unit it will be fine according to the people who have given me feedback.

Last edited by ishmael; Feb 24, 2011 at 04:29 PM.
Reply
Old Feb 24, 2011 | 06:17 PM
  #3  
chuckd71's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Liked
iTrader: (23)
 
Joined: Jul 2010
Posts: 1,768
Likes: 22
From: Nashville / Tampa
Default

Who is the seller? I bought a harness/ pcm combo made for my setup for under $500 IIRC from chevythunder and I have nothing but good things to say about the product and service. The people who say 'you get what you pay for' often say that to justify spending more than they have to. Of course sometimes cheap **** is in fact just cheap **** but paying for a name is, well, paying for a name and in this game there are plenty of other things to spend money on.
Like ishmael said throw up a link and I'll bet someone here has at least heard of the seller.
Reply
Old Feb 24, 2011 | 06:29 PM
  #4  
bronx_peanut's Avatar
On The Tree
 
Joined: Oct 2009
Posts: 117
Likes: 0
Default

The best harness to get off of ebay is from TechRods. You might have to wait awhile to get it but it is worth the wait.
Reply
Old Feb 24, 2011 | 06:46 PM
  #5  
hotswap's Avatar
Thread Starter
Staging Lane
10 Year Member
iTrader: (3)
 
Joined: Apr 2010
Posts: 65
Likes: 0
From: Vegas
Default

Thanks for all the info. The guy is offering the harness, PCM, IAC, TPS, MAF, complete fuel system with Walbro inline 255lph, Wix Corvette filter/regulator all connections and braided line to plum a tank in the rear of a truck for an even grand. I talked to him today and he seems legit and knows what he's talking about anyway. Here's the link.

http://cgi.ebay.com/ebaymotors/ws/eB...#ht_940wt_1167
Reply
Old Feb 24, 2011 | 07:17 PM
  #6  
aknovaman's Avatar
TECH Addict
15 Year Member
Liked
iTrader: (7)
 
Joined: Apr 2007
Posts: 2,012
Likes: 111
From: Hog Back, KS
Default

Open loop only WTF is the deal with that? If it's so great of a harness, why does he not include 8 simple wires and two O2 sensor connectors?

Jegs has Walbor for $99

Vette regulator is $40 from Rock Auto not $100
Does not even know how to spell tachometer "TACK"
$90 for a $20 trans connector from GM
No electric fan relays? Start adding up the things you need and a commercial harness is a better deal, IMO

Suggest you do some research before dropping down home hard earned cash
Reply
Old Feb 25, 2011 | 08:08 AM
  #7  
psiconversion's Avatar
LS1Tech Sponsor
15 Year Member
iTrader: (5)
 
Joined: Feb 2007
Posts: 1,310
Likes: 11
From: Brick, NJ
Default

I can only speak for the harnesses we sell at PSI psiconversion.com. We have finally become a vendor on LS1tech. All of our harnesses are brand new, and use gm Delphi connectors and automotive grade wire and loom. The harness is very easy to install and we offer tech support. We also offer tuned refurbished pcms. Most harnesses ship within 5 days and are stocked. If I can answer any particular questions let me know.

Joe
Reply
Old Feb 25, 2011 | 08:28 AM
  #8  
chuckd71's Avatar
TECH Fanatic
15 Year Member
Photogenic
Photoriffic
Liked
iTrader: (23)
 
Joined: Jul 2010
Posts: 1,768
Likes: 22
From: Nashville / Tampa
Default

Someone else has already mentioned the lack of fan relays and overcharging for the regulator/ fittings. Extra for the trans control? What trans are you running?
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 Feb 25, 2011 | 09:38 AM
  #9  
themachasy's Avatar
TECH Regular
iTrader: (5)
 
Joined: Apr 2008
Posts: 474
Likes: 0
From: Miami, Florida
Default

Originally Posted by psiconversion
I can only speak for the harnesses we sell at PSI psiconversion.com. We have finally become a vendor on LS1tech. All of our harnesses are brand new, and use gm Delphi connectors and automotive grade wire and loom. The harness is very easy to install and we offer tech support. We also offer tuned refurbished pcms. Most harnesses ship within 5 days and are stocked. If I can answer any particular questions let me know.

Joe
Got one of these guys harnesses. Great turnaround time, great price!
Reply
Old Feb 25, 2011 | 09:51 AM
  #10  
Rafedial's Avatar
Launching!
iTrader: (7)
 
Joined: Dec 2004
Posts: 216
Likes: 0
From: Northern, OH
Default

Originally Posted by bronx_peanut
The best harness to get off of ebay is from TechRods. You might have to wait awhile to get it but it is worth the wait.
+1 for Techrods

Great price and quality harness. Jeff even made some small harness mods for me at no charge. wait was not bad, payed 1/17/11, received 2/10/11 as expected.
Reply
Old Feb 25, 2011 | 03:31 PM
  #11  
Pocket's Avatar
TECH Addict
15 Year Member
iTrader: (22)
 
Joined: Apr 2009
Posts: 2,656
Likes: 149
From: NC
Default

Originally Posted by aknovaman
Open loop only WTF is the deal with that? If it's so great of a harness, why does he not include 8 simple wires and two O2 sensor connectors?

Jegs has Walbor for $99

Vette regulator is $40 from Rock Auto not $100
Does not even know how to spell tachometer "TACK"
$90 for a $20 trans connector from GM
No electric fan relays? Start adding up the things you need and a commercial harness is a better deal, IMO

Suggest you do some research before dropping down home hard earned cash
^ This. Add up all the pieces that make a harness actually useful and the ready to install price gets a bit higher
Reply




All times are GMT -5. The time now is 02:26 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