OBD1 to OBD2 conversion - LS1TECH

Log In 


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

OBD1 to OBD2 conversion

Closed Thread
 
Thread Tools Search this Thread
Old 11-22-2007, 12:55 PM   #1
On The Tree
Thread Starter
iTrader: (2)
 
Join Date: Dec 2002
Location: HEB, TX
Posts: 135
Default OBD1 to OBD2 conversion

whats all needed to do this? new computer and sensors? would i need to re-do the entire engine sensor wiring too?

I don't have crap for GOOD OBD1 tuners in my area, all have gotten into the LS1 tuning w/ the OBD2 stuff, I'd like to be able to use them to tune the car.

Any help is appriciated.

-Ben
Hybrid86Z is offline  
Old 11-22-2007, 01:00 PM   #2
TECH Fanatic
iTrader: (2)
 
ckyconan2003's Avatar
 
Join Date: Aug 2006
Location: Bryant, AR
Posts: 1,008
Default

OBD1 PCM and 93-95 knocksensor
ckyconan2003 is offline  
Old 11-22-2007, 01:05 PM   #3
On The Tree
Thread Starter
iTrader: (2)
 
Join Date: Dec 2002
Location: HEB, TX
Posts: 135
Default

Quote:
Originally Posted by ckyconan2003 View Post
OBD1 PCM and 93-95 knocksensor

i'm converting FROM an OBD1 setup TO an OBD2


so just an tuned OBD2 computer and an OBD2 knock sensor is all i need? thats what i'm hearing.
Hybrid86Z is offline  
Old 11-22-2007, 07:06 PM   #4
TECH Junkie
iTrader: (31)
 
96lt1m6's Avatar
 
Join Date: Jan 2006
Location: LA$ VEGA$
Posts: 3,561
Default

you are correct.
OBDII pcm tuned for your conversion, a knock sensor.
96lt1m6 is offline  
Old 11-30-2007, 07:23 PM   #5
Launching!
iTrader: (2)
 
YORK_MUSTAINE's Avatar
 
Join Date: Nov 2007
Location: FAIRFIELD, CA
Posts: 262
Default

Quote:
Originally Posted by 96lt1m6 View Post
you are correct.
OBDII pcm tuned for your conversion, a knock sensor.
so just the knock sensor and a obd2 pcm?
YORK_MUSTAINE is offline  
Old 11-30-2007, 07:33 PM   #6
On The Tree
Thread Starter
iTrader: (2)
 
Join Date: Dec 2002
Location: HEB, TX
Posts: 135
Default

thats what he said I'll let you know how it goes if i decide to give it a try.
Hybrid86Z is offline  
Old 11-30-2007, 07:37 PM   #7
TECH Junkie
iTrader: (31)
 
96lt1m6's Avatar
 
Join Date: Jan 2006
Location: LA$ VEGA$
Posts: 3,561
Default

yes.you do plan on getting a tune aren't you?
you need to have the CPS,rear O2's deleted from the OBDII pcm
96lt1m6 is offline  
Old 11-30-2007, 08:59 PM   #8
That's MISTER MODERATOR
iTrader: (9)
 
Paul Bell's Avatar
 
Join Date: Nov 2005
Location: NYC
Posts: 7,205
Default

Ain't there a crank sensor on the OBDII?
Paul Bell is offline  
Old 11-30-2007, 10:39 PM   #9
Registered User
 
Join Date: Nov 2007
Posts: 10
Default

CPS? Actually this good info, I have the same prob. My buddy has HP tuners and we werent able to do anything with it because mine is a 95 also. So the wiring harness or nothing else needs replaced?
Transamthunder85 is offline  
Old 11-30-2007, 11:05 PM   #10
TECH Junkie
iTrader: (31)
 
96lt1m6's Avatar
 
Join Date: Jan 2006
Location: LA$ VEGA$
Posts: 3,561
Default

Quote:
Originally Posted by Paul Bell View Post
Ain't there a crank sensor on the OBDII?
yes,it needs to be deleted from pcm
its mainly for emission


Quote:
Originally Posted by Transamthunder85 View Post
CPS? Actually this good info, I have the same prob. My buddy has HP tuners and we werent able to do anything with it because mine is a 95 also. So the wiring harness or nothing else needs replaced?
Crank Position Sensor
nope,no harness mods. you cannot use HP on these cars

Last edited by 96lt1m6; 11-30-2007 at 11:16 PM. Reason: my computer shut off (lightning out)
96lt1m6 is offline  
Old 11-30-2007, 11:09 PM   #11
TECH Fanatic
iTrader: (10)
 
1bdbrd's Avatar
 
Join Date: Jan 2004
Posts: 1,498
Default

Hp Tuners WILL NOT work with an LT1 pcm. A swap to OBDII won't help you really at all.
1bdbrd is offline  
Old 12-01-2007, 12:43 AM   #12
10 Second Club
iTrader: (8)
 
TwoFast4Lv's Avatar
 
Join Date: Nov 2001
Location: LT1 land...the "409" of the 90s!
Posts: 9,994
Default

BTW no one has mentioned the other wire you need to run from the Passenger kick panel to the ALDL
TwoFast4Lv is offline  
Old 12-01-2007, 07:44 AM   #13
TECH Fanatic
 
bricez28's Avatar
 
Join Date: Jul 2007
Location: long island new york
Posts: 1,422
Default

is there a scanner for obd1 that doesnt need a cigarette lighter? i was trying to scan and we had some fancy scanner that needed a cig lighter.
bricez28 is offline  
Old 12-01-2007, 02:43 PM   #14
TECH Fanatic
iTrader: (10)
 
1bdbrd's Avatar
 
Join Date: Jan 2004
Posts: 1,498
Default

Quote:
Originally Posted by bricez28 View Post
is there a scanner for obd1 that doesnt need a cigarette lighter? i was trying to scan and we had some fancy scanner that needed a cig lighter.
I use freescan on my laptop for my 94. I will be switching to Datamaster though. It still needs a cig. lighter if your laptop battery isn't very good.
1bdbrd is offline  
Old 03-19-2010, 12:01 PM   #15
Launching!
 
stburgpete's Avatar
 
Join Date: Jan 2010
Location: Winter Haven, Florida
Posts: 281
Default

Sounds like fun.
stburgpete is offline  
Old 03-20-2010, 06:21 AM   #16
TECH Regular
 
Join Date: Jan 2005
Posts: 456
Default

As far as I know you can only tune an OBDII LT1 PCM with TunerCat OBDII...which was sold to JET. So unless you can find someone with TunerCat OBDII the other option is to buy JET's software.

I talk with a lot of LT1 guys and finding a tuner who wants to touch an LT1 car is not easy these days.
S10Wildside is offline  
Old 03-20-2010, 06:41 AM   #17
TECH Senior Member
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,132
Default

Jet DST and LT1 Edit are your only two options for tuning OBD-II LT1's right now...
gregrob is offline  
Old 03-20-2010, 06:42 AM   #18
TECH Senior Member
iTrader: (8)
 
gregrob's Avatar
 
Join Date: Sep 2008
Location: 6,000+ feet
Posts: 5,132
Default

Quote:
Originally Posted by 1bdbrd View Post
I use freescan on my laptop for my 94. I will be switching to Datamaster though. It still needs a cig. lighter if your laptop battery isn't very good.
You need to check out Tunerpro RT V5 Beta. It works with LT1's now and has built in data logging. Much better than free scan, fully customizable. You can actually make it show more data than datamaster. No way am I paying for datamaster now that I have this.
gregrob is offline  
Old 03-20-2010, 09:28 AM   #19
TECH Junkie
iTrader: (15)
 
MasterTomos's Avatar
 
Join Date: Oct 2008
Location: Northeast Iowa
Posts: 3,512
Default

wow...thread dug up from '07... at least people are using the search bar nowadays!
MasterTomos is offline  
Old 07-18-2010, 05:00 PM   #20
TECH Fanatic
iTrader: (1)
 
Join Date: Jun 2010
Posts: 1,060
Default

Yup we sure are. I have a 95 and it has an obd2 , which is better for tuning? I hear obd1 and others say obd2?
alexcoreas is offline  
Closed Thread

Related Topics
Thread Thread Starter Forum Replies Last Post
OBD2 to OBD1 Port Adapter 12sec97Z28 LT1-LT4 Modifications 7 04-28-2014 10:26 PM
PCM question WCT13 LT1-LT4 Modifications 7 03-14-2014 08:24 AM
96 trans am tuning??? criticalx LT1-LT4 Modifications 6 02-03-2014 12:55 PM
how do Make my 94 into a 96 obd 2 connector? SPOOLED UP LT1-LT4 Modifications 8 06-18-2013 09:29 PM
LT1 OBD1 vs OBD2 tuning software. TT350 LT1-LT4 Modifications 3 10-06-2010 09:45 PM


Tags
91, benefits, code, converison, conversion, convert, converter, converting, laptop, list, lt1, obd, obd1, obd2, obdi, obdii, scanner, trans

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are Off



All times are GMT -5. The time now is 05:35 PM.