Why OBD1?

[lolcantturn]

OBD1 is just about the past for 24Vers who swap in M52 and S52's, OBD2 has proven to be much more efficient and is great for diagnosing any problems you might have down the road. While OBD1 and an M60 is very bare to the bones wiring, an OBD2 M62 is not that much more complicated. So I'm curious, I'm picking up an M62 for cheap, who here has done an OBD2 swap? It seems like the build threads I find just die off for OBD2. I'm going to assume its exactly the same as OBD2 S52..in which case EWS delete is the only thing necessary for it to fire unless you get the EWS from the donor vechicle

[Jean]

It's not only because of EWS, half of it is for SMOG. OBD1 = less bs to deal with vs OBD2.

[lolcantturn]

Good thing I live in jersey! Your Cali guys have it too rough

[CoreyZ]

Tuning. I couldn't find any good options for OBD2 M6Xs. Not much of a market.

[dirty30]

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

[lolcantturn]

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

Bahaha, and you are?

[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.

[battlecattle]

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

[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

[robiniscool]

Double post.

[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]

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]

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.

[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

[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.