Anyone heard of the "Shogun" computer reset techniques?

[Russell]

Procedure:


Following is a procedure, entitled "shogun", for resetting the computers on a M70 engine. However, the posting on Roadfly stated it would work with any BMW including the e34. Supposed to clear out the adapative memory and allow relearning (or similar) for all the various vehicle computers??

Somehow this seems risky. Would it benefit our cars, especially the 525i 4 speed auto without an adaptive transmission?


1. disconnect battery cables, first -, then +
2. turn ignition on position II
3. connect both battery cables ("short") for at least 10 minutes for drain of remaining power out of the system
4. ignition off
5. connect battery cables again to battery, first +, then -

Job done.

[Bill R.]

Russell,

Thats just Shogun from the e32 roadfly board... It won't hurt to do it but it won't work any better than disconnecting the battery cables and leaving them unhooked for awhile... Touching them together just discharges any capacitors in the system such as the ones in the dash cluster allowing the memory to clear faster...Its not going to be the wonderful cure all ... the adaptive memory on our cars isn't that adaptive. it only corrects within a fairly narrow range.. I suspect its more of a placebo effect. but it won't hurt anything anyway.








Procedure:


Following is a procedure, entitled "shogun", for resetting the computers on a M70 engine. However, the posting on Roadfly stated it would work with any BMW including the e34. Supposed to clear out the adapative memory and allow relearning (or similar) for all the various vehicle computers??

Somehow this seems risky. Would it benefit our cars, especially the 525i 4 speed auto without an adaptive transmission?


1. disconnect battery cables, first -, then +
2. turn ignition on position II
3. connect both battery cables ("short") for at least 10 minutes for drain of remaining power out of the system
4. ignition off
5. connect battery cables again to battery, first +, then -

Job done.

[Russell]

I just wondered if it would "reset" the computers to baseline and then the car can "fully adapt" to the way I drive and not the way the previous owner (his wife's car) drove it.

I guess I wonder if the PO's "soul" is in the electronics -:). I have owned the car a little over a year and have wondered about the adaptive capabilities. For example, how how will it take to adapt to a new driver? I may try this for fun.

A reboot sure works well on my older PC base computers. We have 4 in our household of various ages.



Russell,

Thats just Shogun from the e32 roadfly board... It won't hurt to do it but it won't work any better than disconnecting the battery cables and leaving them unhooked for awhile... Touching them together just discharges any capacitors in the system such as the ones in the dash cluster allowing the memory to clear faster...Its not going to be the wonderful cure all ... the adaptive memory on our cars isn't that adaptive. it only corrects within a fairly narrow range.. I suspect its more of a placebo effect. but it won't hurt anything anyway.

[Johntee540]

Shades of Windows Blue Screen of death! Every e34 owner should immediately Ctrl-Alt-Del their ECU for an amazing difference.

My car was sluggish with un predictable shift points and erratic shifting before I did the procedure. The 540 was new to me this October and I thought it had all sorts of problems. I was considering replacing the tranny all sorts of other repairs. After resetting the ECU - The idle smoothed out. I am getting 19-20 mpg around town and the tranny has learned new shift points that are compatible to my driving.

I feel like its a completely new car. Wow! - Johntee540

[shogun]

hehe, I was just searching for some technical stuff written by Bill R.
and this old thing pops up.

And and that time a young and unexperienced Johntee540 was very happy :)

[Alexlind123]

Shift points are the biggest thing, really. IMO

[632 Regal]

I found a bit of a difference, fixes problems within limits. If you have a bad sensor it wont fix it but will give you a difft running car for a few. The reboot is about the most noticable thing I have done on a regular basis, try it.

[Rob]

Going to try this when I get home. It won't fix my cooling problem. But might sort out idling issue and shifting issue. :)

[Zeuk in Oz]

I found a bit of a difference, fixes problems within limits. If you have a bad sensor it wont fix it but will give you a difft running car for a few. The reboot is about the most noticable thing I have done on a regular basis, try it.
I get the impression it does more for autos than manuals.

[gt90]

it worked wonders on my 89 535im idle smoothed out and lots of power was returned. Plus I was getting about 18.5 average now I'm averaging 19.5-20mpg because I don't have to use nearly as much throttle to move.
Also worked wonders on my 535ia a while back.

[SRR2]

Good lord, this foolishness just won't die.

[BFEINZIMER]

ahaha ima try it tonight!

[attack eagle]

just touch the positive and negative together.
does the same thing in 2 seconds.

or disco the + and turn the key on.

it really makes no difference electrically.

[EricB]

How much adaptability is there really?

People are talking about shift points changing, but my current mystery is that sometimes my 530A will only shift at redline.
Fun when out playing... lots less fun when trying to not wake neighbors when leaving for work in the morning.

I suspect something else is going on with my car, but if I've trained it to be a race car full time, I guess its a possibility?

[632 Regal]

the 530 auto will shift at higher rpms when cold in an effort to get everything to operating temp sooner...as for redline? you have a problem indeed.


How much adaptability is there really?

People are talking about shift points changing, but my current mystery is that sometimes my 530A will only shift at redline.
Fun when out playing... lots less fun when trying to not wake neighbors when leaving for work in the morning.

I suspect something else is going on with my car, but if I've trained it to be a race car full time, I guess its a possibility?

[EricB]

higher rpms when cold

I learn something cool about my car every few days :)

My current theory is my kickdown switch.

[whiskychaser]

Gave it a go today. Changes did seem slightly different and I didnt seem to have to push the go pedal as hard. What I can say for sure is before I disconnected the battery leads, the OBC said 18mpg. I did a 60 mile roundtrip with mixed driving and its reading 22 now:) This may have more to do with fuel supplier, outside temp or humidity. Maybe its just karma.

[Ferret]

Gave it a go today. Changes did seem slightly different and I didnt seem to have to push the go pedal as hard. What I can say for sure is before I disconnected the battery leads, the OBC said 18mpg. I did a 60 mile roundtrip with mixed driving and its reading 22 now:) This may have more to do with fuel supplier, outside temp or humidity. Maybe its just karma.

22mpg out of an M50? :o

[whiskychaser]

22mpg out of an M50? :o
Yep. 4 in the car to Huddersfield over the M62. 3 in it back. Then 2 to Mossley and back. Not exactly flat round here is it?:)

[Ferret]

Yep. 4 in the car to Huddersfield over the M62. 3 in it back. Then 2 to Mossley and back. Not exactly flat round here is it?:)

Yikes, mind you in traffic I used to get 16-17 out of my M50 after it'd thrown a piston.