Why OBD1?

[lolcantturn]

Just think....you think you have it all set up and installed correctly...turn the key ....and it doesn't start. Do u think you could diagnose the numerous reasons why that is? At least with OBDI, you have: fuel, ecu power...just about it. No need to see if your complicated sub-systems are working properly and feeding the ECU the proper information for the thing to turn over.

Well actually yes!
You can very well easily get a code scanner and the much smarter ECU will tell you the exact reason why your car is not starting.
With the ECU reflash you get rid of the two O2 sensors, EGR, and air pump.

Again I'm talking about the M62B44 Non-TU....Not going to mess with an M62B44TU with pedal computer etc.

[Garageaholic]

In all honesty, there are way more reasons to not do a TU than there are good reasons to attempt it. If you found a TU cheap enough to do a decent rebuild on it, just imagine what you can find a NV M6X for. There really would be no wow factor in a TU swapped E30, past the V8 part of it and the work integrating CAN/DSC/EWS into it would gain you no benefit, for the effort involved. If you find a NV M6X, the rest of the swap is pretty well documented, which gives you a much higher likelihood of completing it, since any questions/problems will already have been seen and solved. That, in a nutshell, is the answer to your original question of why OBDI...

Garey

What he said.

OBDII is not much more benefit for much more work. Yes, slightly more power as confirmed through dyno tests, but way more unnecessarily complicated .....and not much more wow factor.

Just think....you think you have it all set up and installed correctly...turn the key ....and it doesn't start. Do u think you could diagnose the numerous reasons why that is? At least with OBDI, you have: fuel, ecu power...just about it. No need to see if your complicated sub-systems are working properly and feeding the ECU the proper information for the thing to turn over.

[lolcantturn]

I think there was some confusion, what I meant was a M62B44 OBD2 non-TU...putting a M62TU into my car would be out of my scope

[bmwmech1]

Make a hybrid OBD1 M60B44. Done.

Garey

[iamsam]

Make a hybrid OBD1 M60B44. Done.

[Jean]

no HP gain by going 4.4 vs 4.0 and way more work... pretty self explanatory

wrong, as been proven many times by dyno results. might as well stick with b30 right? same thing.

[bmwmech1]

In all honesty, there are way more reasons to not do a TU than there are good reasons to attempt it. If you found a TU cheap enough to do a decent rebuild on it, just imagine what you can find a NV M6X for. There really would be no wow factor in a TU swapped E30, past the V8 part of it and the work integrating CAN/DSC/EWS into it would gain you no benefit, for the effort involved. If you find a NV M6X, the rest of the swap is pretty well documented, which gives you a much higher likelihood of completing it, since any questions/problems will already have been seen and solved. That, in a nutshell, is the answer to your original question of why OBDI...

Garey

[lolcantturn]

Unsure of what to do with the DSC stuff, implementing a 4 channel ABS system into my car isn't quite what I had in mind. EWS will be deleted.

[robiniscool]

lol then its all that besides the throttle by wire conversion,obdII still uses a can bus signal from abs/dsc and ews stuff and a sexy 4 o2 sensors

[lolcantturn]

no HP gain by going 4.4 vs 4.0 and way more work... pretty self explanatory

The torque numbers are a bit different, but I'm wasn't concrete on an M62, just found one locally cheap enough to do a pretty good rebuild on.

wells theres a few reasons but if you have most of the parts I list it should be fine,
you have to do a throttle by cable conversion which uses a potentiometer because thats what obdII dme accepts, and the engine speed is monitered by the abs/dsc III unit off a e39 with signals to each wheel and has a can bus signal so youd have to try to put on your unit to the ecu, and ews system you need the dme with matching key and ews unit installed. once you get that figured out you've past the hard part, but if you want to get it Bar'd then you'll need a lot more then that

M62TU is the one that came with throttle by wire friend! M62 uses a cable

[robiniscool]

Double post.

[robiniscool]

wells theres a few reasons but if you have most of the parts I list it should be fine,
you have to do a throttle by cable conversion which uses a potentiometer because thats what obdII dme accepts, and the engine speed is monitered by the abs/dsc III unit off a e39 with signals to each wheel and has a can bus signal so youd have to try to put on your unit to the ecu, and ews system you need the dme with matching key and ews unit installed. once you get that figured out you've past the hard part, but if you want to get it Bar'd then you'll need a lot more then that

[battlecattle]

no HP gain by going 4.4 vs 4.0 and way more work... pretty self explanatory

[lolcantturn]

Okay well the reason I ask is that I'm picking an M62B44 up but I want to know if there's a documented OBD2 M62 swap because as far as I know they're all OBD1. I know that the M62's soldered chip really hinders any aftermarket tuning for the motor but that's not a concern for me.

[lolcantturn]

Your swap is never going to happen... You know this right?

Bahaha, and you are?