Install EFI connection LSX PCM - Page 5 - LS1TECH - Camaro and Firebird Forum Discussion

Notices
LT1-LT4 Modifications 1993-97 Gen II Small Block V8

Install EFI connection LSX PCM

Reply

Old 10-19-2009, 10:27 PM
  #81  
Banned
iTrader: (1)
 
J2Pharren1's Avatar
 
Join Date: Apr 2005
Posts: 219
Default

So this is new to me, wouldn't this set off all kinds of trouble codes? Would a car with this set up be able to pass an OBDII scan emissions test?
J2Pharren1 is offline  
Reply With Quote
Old 10-20-2009, 05:25 AM
  #82  
TECH Regular
 
Join Date: Jan 2005
Posts: 456
Default

Originally Posted by 97Z28SS View Post
I got my kit and 01-02 pcm today and I have a few questions, do I reuse the LT1 crank position sensor or do I need to buy one from EFI Connection? Also where are you guys getting your base tunes done, I have a 383, 11.8:1 scr, 6" 4340 rods, 4340 forged crank, 847 cam, le3 heads & ported intake, 58 mm tb, Pacesetter LTs, 3" td exhaust, m6, no egr, no airpump. Thanks for any help you guys can give, also are the spark plug connectors the same for the LS1 and LS2 coils?
You must use the crank sensor in the kit. It's in a small AC Delco box. Please refer to the installation guide in the package. Also available online at http://www.eficonnection.com/eficonn...ationGuide.pdf.

24x Crankshaft Reluctor and Sensor
GM’s 24x crank sensor is required for the 24x installation. The 96-97 LT1’s 4x crank sensor is not compatible with the 24x crank reluctor.
The spark plug boots/terminals are the same for LS1 and LS2 coils. Some are even using boots/terminals from the optispark.

Last edited by S10Wildside; 10-20-2009 at 05:47 AM.
S10Wildside is offline  
Reply With Quote
Old 10-20-2009, 05:39 AM
  #83  
TECH Regular
 
Join Date: Jan 2005
Posts: 456
Default

Originally Posted by Jperran View Post
So this is new to me, wouldn't this set off all kinds of trouble codes?
Yes and No. But that's a loaded question.

"Diagnostic Trouble Codes" (DTCs) means a lot of different things. In the OBDI days, the source of DTCs was the the ECM. By the time OBDII came around, there were other modules that could set DTCs. DTCs beginning with the letter P are sourced from the PCM. The 24x conversion is all about using the LS1 PCM and satisifying its requirements so that you do not set DTCs. But of course you are going to see DTCs if loading, for example, a Corvette calibration into the LS1 for the 24x conversion. Fuel level sensor, alternator control, and any other functionality used in the Corvette but not in the retrofit vehicle. So these are bogus DTCs that can be eliminated in the PCM calibration using HP Tuners or EFILive. Does this sound like a bad thing? Well, I could take a 2000 Corvette, enable all possible DTCs through the calibration, and set off an amazing amount of DTCs.

Think of it this way. GM begins with an all-inclusive calibration in the PCM and disables/enables what is required for the vehicle it's being used with. This is what 24x swappers are doing, too.

By the time you're done, you will have no DTCs unless there is a "real" problem with your engine/transmission/etc.

Would a car with this set up be able to pass an OBDII scan emissions test?
Check with your county/state emissions testing center about what you can and can not do to your vehicle regarding emissions equipment.
S10Wildside is offline  
Reply With Quote
Old 10-23-2009, 11:12 AM
  #84  
Teching In
 
Join Date: Feb 2003
Location: Kansas
Posts: 1
Default

This does look promising. Cant wait until the timing cover is done for the double roller.
Hoostie95 is offline  
Reply With Quote
Old 10-23-2009, 12:14 PM
  #85  
TECH Addict
iTrader: (17)
 
djjab57's Avatar
 
Join Date: Jul 2007
Location: Texas
Posts: 2,501
Default

I may have have missed it but what is the real cost for everything ?
djjab57 is offline  
Reply With Quote
Old 10-23-2009, 07:36 PM
  #86  
TECH Junkie
iTrader: (31)
 
96lt1m6's Avatar
 
Join Date: Jan 2006
Location: LA$ VEGA$
Posts: 3,787
Default

you will end up spending 1500.00 or less.
96lt1m6 is offline  
Reply With Quote
Old 10-23-2009, 07:38 PM
  #87  
TECH Fanatic
iTrader: (5)
 
Join Date: May 2009
Posts: 1,186
Default

Thanks S10wildside for all of your help and info, hopefully in the next week I'll have the money to order the complete wiring harness. Do you guys have any m6 harnesses ready now or do you guys do them on a per order basis.
97Z28SS is offline  
Reply With Quote
Old 10-24-2009, 07:01 AM
  #88  
TECH Regular
 
Join Date: Jan 2005
Posts: 456
Default

Originally Posted by 97Z28SS View Post
Thanks S10wildside for all of your help and info, hopefully in the next week I'll have the money to order the complete wiring harness. Do you guys have any m6 harnesses ready now or do you guys do them on a per order basis.
Sorry, no M6 harnesses in stock. Harnesses are built as they're ordered.

There are many different harnesses for fourth-gen F-bodies...
- 93 Camaro/Firebird 4L60 (no lockup control)
- 93 Camaro/Firebird 4L60E
- 93 Camaro/Firebird 4L80E
- 93 Camaro/Firebird M6
- 94 Camaro/Firebird 4L60E
- 94 Camaro/Firebird 4L80E
- 94 Camaro/Firebird M6
- 95 Camaro/Firebird 4L60E
- 95 Camaro/Firebird 4L80E
- 95 Camaro/Firebird M6
- 96 thru 97 Camaro/Firebird 4L60E
- 96 thru 97 Camaro/Firebird 4L80E
- 96 thru 97 Camaro/Firebird M6

Then there are the exceptions where the following is requested...

Nitrous Signal Wire to PCM
EFILive use. When a ground is applied to the wire, the PCM is "armed" for nitrous control. Set the spark and fuel multiplier tables and then parameters for entering those tables. Very cool!

VersaFueler Support
Low-impedance injector driver module. We cut off the Deutsch connectors, install Delphi connectors and integrate the VersaFueler into the harness. The VersaFueler is plug and play with PCM to Versafueler and Versafueler to Injectors (PCM > VersaFueler > Injectors). Want to remove the VersaFueler later? No problem; disconnect it and plug in the mating engine harness connectors to restore PCM to injector connection (PCM > Injectors).

Other Variations
Harnesses have been built with extra lengths for O2s (eliminate extensions), 5 wire MAF, A4 and M6 control (when a transmission swap is expected in the future), MAP signal breakout under dash for boost gauge, etc.

Last edited by S10Wildside; 10-24-2009 at 07:41 AM.
S10Wildside is offline  
Reply With Quote
Old 10-24-2009, 07:56 AM
  #89  
TECH Fanatic
iTrader: (5)
 
Join Date: May 2009
Posts: 1,186
Default

Cool thanks S10wildside, about how long does it take to build the harness, I have a 94 Z28 m6 and I have relocated the altenator to the drivers side where the AIR pump used to be so I'll need an extended altenator charging wire. I'm keeping everything (a/c, ps etc) except the EGR, and AIR pump.
I also will be running Nitrous and have HPT Pro, does HPT have the ability to control nitrous like EFI Live, if so I'd like that option?
97Z28SS is offline  
Reply With Quote
Old 10-24-2009, 08:16 AM
  #90  
TECH Regular
 
Join Date: Jan 2005
Posts: 456
Default

Originally Posted by 97Z28SS View Post
Cool thanks S10wildside, about how long does it take to build the harness, I have a 94 Z28 m6 and I have relocated the altenator to the drivers side where the AIR pump used to be so I'll need an extended altenator charging wire. I'm keeping everything (a/c, ps etc) except the EGR, and AIR pump.
I also will be running Nitrous and have HPT Pro, does HPT have the ability to control nitrous like EFI Live, if so I'd like that option?
Harness lead times vary according to the amount of work in the shop.

We've been using EFILive and haven't looked into HP Tuners, so I'm not sure if HP Tuners supports a nitrous calibration.
S10Wildside is offline  
Reply With Quote
Old 10-24-2009, 08:53 AM
  #91  
TECH Veteran
iTrader: (17)
 
Puck's Avatar
 
Join Date: Oct 2006
Posts: 4,126
Default

Decided to bite the bullet and go with this system for ease of tuning on my aggressive 93 383 build. Will be a few weeks before I order, but I calculated I could complete it for $1300...cheaper if I scope out local Pull-and-Save yards, but Camaro stuff disappears so fast here I won't even bother.

Looking forward to the process...and explaining to my speed shop that I need an LSX tune for my 93 LT1 with a 95 LTX stroker engine .
Puck is offline  
Reply With Quote
Old 10-24-2009, 10:42 AM
  #92  
TECH Enthusiast
iTrader: (8)
 
old93camaro's Avatar
 
Join Date: Nov 2008
Location: el paso, tx
Posts: 735
Default

lol good look to all i think im going ot look in to this as well
old93camaro is offline  
Reply With Quote
Old 10-25-2009, 01:59 PM
  #93  
On The Tree
iTrader: (2)
 
Phantom383's Avatar
 
Join Date: Mar 2007
Location: Michigan
Posts: 131
Default

T/A Kid,
I was looking at the pin outs for the 94-97 and there are 2 different places where the LS-1 PCM has a single ground vs 3-4 grounds for the LT-1 harness's.
How did you work that out?

I will be doing my car as well as a 93 Z28.
Phantom383 is offline  
Reply With Quote
Old 10-25-2009, 02:51 PM
  #94  
TECH Fanatic
Thread Starter
iTrader: (12)
 
T/A KID's Avatar
 
Join Date: Jul 2004
Posts: 1,798
Default

T/A Kid,
I was looking at the pin outs for the 94-97 and there are 2 different places where the LS-1 PCM has a single ground vs 3-4 grounds for the LT-1 harness's.
How did you work that out?
Simple, if you look at the 4 grounds they are all the same numbers. Just pick one for each ground and on the next ground you'll have three to choose from, pick one again and on the third ground you'll have two to choose from, etc.

On the LT1 side it gives the option for one of the 4 grounds, you'll still use all 4 though. Does that make sense? Theres 4 LT1 grounds and 4 LS1 grounds not 2.
T/A KID is offline  
Reply With Quote
Old 10-26-2009, 04:00 AM
  #95  
Teching In
 
Join Date: Feb 2009
Posts: 2
Default

I'm interested in hearing what will not work in a 1994 6-speed OBD1 Trans Am if I switch to the LS1 computer. I'm talking aobut things like stock gages, ABS, cruise, air bags, airconditioning, etc. What's plug and play and what isn't.

Will the EFI Conection/LS1 electronic throttle/cruise conversion work with the 1994 factory cruise controls?

How is the LS1 OBD2 port installed? Is the OBD port a direct connection to the underhood computer? Is there a seperate "body computer" on these cars, i.e. is the underhood computer just for the engine/trans?
Jesse Lackman is offline  
Reply With Quote
Old 10-26-2009, 01:42 PM
  #96  
On The Tree
iTrader: (2)
 
Phantom383's Avatar
 
Join Date: Mar 2007
Location: Michigan
Posts: 131
Default

Originally Posted by T/A KID View Post
Simple, if you look at the 4 grounds they are all the same numbers. Just pick one for each ground and on the next ground you'll have three to choose from, pick one again and on the third ground you'll have two to choose from, etc.

On the LT1 side it gives the option for one of the 4 grounds, you'll still use all 4 though. Does that make sense? Theres 4 LT1 grounds and 4 LS1 grounds not 2.
Ya, I got it
The 4 on the LT-1 are put in separate slots on the LS-1.
Phantom383 is offline  
Reply With Quote
Old 10-26-2009, 01:45 PM
  #97  
On The Tree
iTrader: (2)
 
Phantom383's Avatar
 
Join Date: Mar 2007
Location: Michigan
Posts: 131
Default

Originally Posted by Jesse Lackman View Post
I'm interested in hearing what will not work in a 1994 6-speed OBD1 Trans Am if I switch to the LS1 computer. I'm talking aobut things like stock gages, ABS, cruise, air bags, airconditioning, etc. What's plug and play and what isn't.

Will the EFI Conection/LS1 electronic throttle/cruise conversion work with the 1994 factory cruise controls?

How is the LS1 OBD2 port installed? Is the OBD port a direct connection to the underhood computer? Is there a seperate "body computer" on these cars, i.e. is the underhood computer just for the engine/trans?
According to EFI the solenoids are consolable by the LS computer so no worry's there.
I have the same thing.
Phantom383 is offline  
Reply With Quote
Old 10-26-2009, 08:06 PM
  #98  
Staging Lane
 
White97z28's Avatar
 
Join Date: Jun 2004
Location: Homer Glen, IL
Posts: 69
Default

Well I tried to fire it up over the weekend....All I get is Crank crank crank crank, only fault code is P1336, which is to be expected. Guess I need to see if the injectors are getting a signal, which they should be as I am getting a spark signal. Timing was triple checked before buttoning it all up. Thinking about it is making my head hurt.....
White97z28 is offline  
Reply With Quote
Old 10-26-2009, 09:10 PM
  #99  
Teching In
 
Join Date: Apr 2006
Location: North Platte, Nebraska
Posts: 35
Default

Did you do the DIY wiring harness or EFI Connections?
dr97z is offline  
Reply With Quote
Old 10-26-2009, 09:23 PM
  #100  
Staging Lane
 
White97z28's Avatar
 
Join Date: Jun 2004
Location: Homer Glen, IL
Posts: 69
Default

Bought a harness from Mike....
White97z28 is offline  
Reply With Quote
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
T/A KID
Parts Classifieds
6
01-02-2017 09:22 PM
T/A KID
Parts Classifieds
6
01-02-2017 09:20 PM
Radcannon
Parts Classifieds
2
07-18-2015 08:43 AM
T/A KID
Parts Classifieds
2
02-04-2014 09:13 AM
LS1 SPEED
Sponsor Sales & Specials
57
09-23-2012 10:34 PM


Thread Tools
Search this Thread
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: