obd1 Vs obd2

[ericjon262]

I'm in the middle of wiring in my 3500 swap, and I'm trying to decide whether to go obd1 or obd2? if I go obd1, I'd be running the EBL flash P4 seen here EBL flash P4

I'm not sure which ECM I'd run if I went OBD2. I don't' know enough about it to make a decision. i do know I would have to get HP tuners to tune it, and it would probably be easier to find a shop to do a dyno tune on it.

Any thoughts?

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[3400-95-Modified]

OBDII is a newer technology and should theoretically give you more/better control, but you need to make sure your starting with an ECM and bin that is decoded quite a bit, thats where OBDI has a bit of an advantage... the main code used for almost all the v6 swaps is fully decoded, or at least I found that out earlier this week... OBDII hasn't been beaten up as much yet and bins are still only 75% or less decoded so that leaves some controls out of your reach.

I guess it depends on which car your starting with and how much work each control system will require.

[neophile_17]

I'm going to throw in with the 7730 too. Yes OBDII can do additional tricks but I like the fact that OBDI is less cluttered. It's also cheaper. I haven't put in too much research but the OBDII software I've seen costs hundreds of dollars and TunerPro is $30. I also used 90% of my original harness so there was less layout.

~sam

[Superdave]

Sometimes more is not better, OBD1 has proven itself to handle anything thrown at it. The weaknesses of $A1 have been addressed by Robert Saar in his na$t1 development. You have huge VE and spark tables and all the things you need for a daily driven car. You also have the advantage of an emulator so you can tune on the fly, with OBD2 you have to stop and re-upload the file every time you make a change.


My vote, 1227730 ECM with nA$t1, a Ostrich Emulator and a ALDL converter.


For what it's worth, there are hundreds of 3x00 swapped jbodies running 7730 ECM's and tuned chips.

[ericjon262]

well, as of right now, I do know this, if I were to go obd1, I would almost definitely be running one of the dynamic EFI boards in a 7730. or their EBL SFI-6 unit if it's available by the time my car is ready for it...