can we get some more folks to check their IAM and see if it resets? To be clear, i want to know if the IAM resets to the original IAM value when the car sits overnight.

So, if you start it in the am and the IAM is .7 and as you drive it works up to say 1.0. Does it stay at 1.0 over night or does it reset back to .7 the following am?
@feldy, maybe we should create a poll or something?

From Toni IAM is always reset to .7 or 1.0 depending on where I set it for the customer after each flash

I'm thinking its this way incase of bad gas or something?

Yep, that is normal after a reflash, but it should not be reset after sitting overnight.

Mine always resets when the car has been sitting.

same,

what is your rom id? im on ZA1JA00C

To be clear guys, we are not talking the iam resetting after a reflash, that is normal. We are talking about the IAM resetting after the car sits for a couple of hours, no flashing involved.

I'm on
ZA1JA01D now. But I started on ZA1JA00D

On my E85 tune it jumps up to 1 with in ten minutes of the car being on. On pump gas it takes a bit longer.

Mine sat overnight and did not reset.

I will test this tonight after work, and tomorrow after an overnight sit.

My observations are subjective and I can't see what the IAM is doing, but after a hard drive (ex. autox) the car is noticeably quicker for the next few driving cycles, even driving to work the next day. I always assumed this was because the IAM had ramped up with learning with the high engine loads and rpms, and would then back off to a lower number with daily driving. This is quite consistent and within a couple of days of daily driving it is back to feeling "normal". This is with 94oct gas.

IAM doesn't ramp down unless the ecu believes knock is present or the iam resets after key off like myself and feldy are seeing.

You do have to be "on it" for the IAM to increase though, not neccesarily wot, but you do need to work the rev range with a little bit of load for the ecu to decide to click the IAM up then it re evaluates. So, it is very possible you are seeing the same thing, but we won't know unless you can log the IAM

what build date and rom ID?

I have a feeling it is build date related more than rom id. I will post up my build date tonight.

build date is April 2012.

rom ID is ZA1JA01C

my build date is also 4/12

Were you able to do any logging?