obd0 vs obd1 vs obd2
12-15-2003, 04:07 PM
#1
1.0 BAR
Thread Starter
Join Date: Sep 2003
Posts: 453
obd0 vs obd1 vs obd2
This might have been covered in the past, but I can't find any info on it. What exactly is the difference between the three versions of On Board Diags? I know that if I go back from obd2 I will lose the knock sensor. What else would be different? Would there be any effect on reliability other than the knock sensor? I'm just trying to decide if it is worth getting an obd1, or scarier obd0 (for TE) ecu to chip instead of using the hack.
12-15-2003, 05:42 PM
#4
3.0 BAR
Join Date: Apr 2003
Posts: 2,260
Re:obd0 vs obd1 vs obd2
Originally Posted by d16tuner
...or scarier obd0 (for TE) ecu to chip instead of using the hack.
I'm the author of TE, and personally, *I* wouldn't use OBD0 unless that is what is your car from the factory. OBD1 is the "prime" generation. Not too many limitations, but also not lacking in technology to gain great engine management.
I love OBD0 to death, and the PGMFI guys have been making *ASTRONOMICAL* strides in OBD0 code, but if you don't have it, don't limit yourself to it. Go to OBD1.
12-15-2003, 05:46 PM
#5
1.0 BAR
Thread Starter
Join Date: Sep 2003
Posts: 453
Re:obd0 vs obd1 vs obd2
It just doesn't make sense that they would update to newer revisions without there being some payoff in reliability or performance. Economy, power, ability of the computer to regulate everything precisely, etc. BTW, I have a 98 Civic EX so I WILL lose the knock sensor, altho I'm not sure how effective it is anyway. Is this the only sensor that going without will cause my reliability to possibly suffer? Also - is changing versions as simple as replacing the ecu and adding an adapter harness, or would other parts on the car need to be replaced with the proper obd version as well (I saw somewhere that perhaps the distributor)?
12-16-2003, 11:45 AM
#7
3.0 BAR
Join Date: Apr 2003
Posts: 2,260
Re:obd0 vs obd1 vs obd2
Originally Posted by d16tuner
It just doesn't make sense that they would update to newer revisions without there being some payoff in reliability or performance.
Reliability, yes, performance, no. Remember, you're driving a production car, not a built race car.
Also - is changing versions as simple as replacing the ecu and adding an adapter harness, or would other parts on the car need to be replaced with the proper obd version as well (I saw somewhere that perhaps the distributor)?
Normally yes, but you're lucky. Your OBDII distributor is basically an OBD1 distributor with a different housing and wiring harness. So you'll be OK. You just need the ECU conversion harness.
Reliability, yes, performance, no. Remember, you're driving a production car, not a built race car.
Also - is changing versions as simple as replacing the ecu and adding an adapter harness, or would other parts on the car need to be replaced with the proper obd version as well (I saw somewhere that perhaps the distributor)?
Normally yes, but you're lucky. Your OBDII distributor is basically an OBD1 distributor with a different housing and wiring harness. So you'll be OK. You just need the ECU conversion harness.
12-16-2003, 02:16 PM
#8
1.0 BAR
Thread Starter
Join Date: Sep 2003
Posts: 453
Re:obd0 vs obd1 vs obd2
Thanks for your unbiased view TurboEF9. I would have expected you to say obd0 before anyone, being the author of TE. That kind of stinks tho, since I've been messing with TE and really loving it! So when are you going to make it work with obd1? Seems like I saw somewhere that this was going to happen, but I don't remember if it is imminent or not. Anyway, I guess I need to look more into Ghettodyne, or the other obd1 offerings for now. Keep up the good work man! And that goes for all you techno geeks at PGMFI. You guys are rocking cheap honda performance, at least for people who know.
