[CantComplain]

Was going to post this in the ISTEP thread but didn't want to get dragged into the "placebo" vs. "guaranteed performance boost" thrashing.

In short summary, it sounds like at least some believe any benefit from this ISTEP update is simply due to resetting adaptations that comes along with the flash. So my question is: is there an easy way to reset adaptations on the F87? IIRC, you can run a sequence on the e90 by pressing the accelerator to the floor while pressing the start button with you foot OFF the brake or something like that. Is there something similar with our cars that doesn't involve pulling the battery cable and dealing with the associated drama? Searched but didn't find it.

I commute in traffic and I think it may be dumbing down the curve, like my car thinks I enjoy driving around at 30MPH. I have Bimmercode and eSys if it involves clearing anything that way. I want to do the ISTEP thing anyway but would like to have the experience with this ahead of time so I can be a little better educated about any changes when that goes down. 6MT, so not looking for tranny adaptations, just the engine/throttle/etc curve.

TIA to anyone who can comment.

[Bee Pee]

Originally Posted by CantComplain

So my question is: is there an easy way to reset adaptations on the F87? IIRC, you can run a sequence on the e90 by pressing the accelerator to the floor while pressing the start button with you foot OFF the brake or something like that. Is there something similar with our cars that doesn't involve pulling the battery cable and dealing with the associated drama? Searched but didn't find it.......

......TIA to anyone who can comment.

In short - Yes - F series TBA (throttle body adaption) reset, similar to E series TBA.

- Put the power on but do not start the engine.
- Floor the throttle for 30-60 seconds
- Keep the throttle to the floor and put the power OFF
- Release the throttle and wait 2 minutes.

During the 2 minutes you may feel or hear some kind of mechanical sound.

TBA is reset.

Test drive it.

BP

[zenmaster]

Does this also reset fuel trims? Would TBA reset show anything noticeable on before and after dyno runs?

[Bee Pee]

Originally Posted by zenmaster

Does this also reset fuel trims? Would TBA reset show anything noticeable on before and after dyno runs?

Fuel trims - No AFAIK
TBA rest and effect on a dyno - No change.

[CommitConfirm]

You could also disconnect the battery?

[CantComplain]

Originally Posted by CommitConfirm

You could also disconnect the battery?

Seems a little easier to do the reset this way, right? Plus no need to reset the clock and anything else. I haven't actually done this yet in my M2--maybe it maintains this or automatically picks it up via satellite.

Still, no tools required. Thanks Bee Pee, I'll check this out and see if it makes any difference for me.

[MZWIE]

That so called reset has been around for years. No one has ever proven it works.

[CantComplain]

I ran this and didn’t hear anything happening. No difference in throttle response. Seems pretty simple but any chance I’m doing something wrong?

First time I pulled over on an onramp (I had just remembered about it). Couldn’t hear much. But have done it another 2x where it’s quiet and I can’t hear a thing. In my e90 I can hear it click and whirl.

[cookiesowns]

Originally Posted by CantComplain

Was going to post this in the ISTEP thread but didn't want to get dragged into the "placebo" vs. "guaranteed performance boost" thrashing.

In short summary, it sounds like at least some believe any benefit from this ISTEP update is simply due to resetting adaptations that comes along with the flash. So my question is: is there an easy way to reset adaptations on the F87? IIRC, you can run a sequence on the e90 by pressing the accelerator to the floor while pressing the start button with you foot OFF the brake or something like that. Is there something similar with our cars that doesn't involve pulling the battery cable and dealing with the associated drama? Searched but didn't find it.

I commute in traffic and I think it may be dumbing down the curve, like my car thinks I enjoy driving around at 30MPH. I have Bimmercode and eSys if it involves clearing anything that way. I want to do the ISTEP thing anyway but would like to have the experience with this ahead of time so I can be a little better educated about any changes when that goes down. 6MT, so not looking for tranny adaptations, just the engine/throttle/etc curve.

TIA to anyone who can comment.

The point of adaptations is you keep your car running in a nice balanced stage, unless you have any mechanical faults or you did some refresh on some parts adaptations won't have a significant impact on drive ability.

If you have esys, then I'm sure you're smart enough to get ISTA+ working. Note that ISTEP upgrades don't necessarily reset all adaptations if you do it with the proper procedure.

There might be some jobs you can run in esys, but I haven't found those yet / bothered digging for them.