Advance Mutiplier resetting on restart? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

mad_sb · 09-24-2013, 05:55 PM

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?

feldy · 09-24-2013, 06:59 PM

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?

King Tut · 09-25-2013, 11:52 AM

Quote:

Originally Posted by feldy

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.

feldy · 09-25-2013, 12:09 PM

Mine always resets when the car has been sitting.

mad_sb · 09-25-2013, 01:42 PM

Quote:

Originally Posted by feldy

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.

feldy · 09-25-2013, 02:08 PM

Quote:

Originally Posted by mad_sb

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.

xjohnx · 09-25-2013, 02:25 PM

Quote:

Originally Posted by mad_sb

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?

Mine sat overnight and did not reset.

Hawaiian · 09-25-2013, 02:27 PM

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

R2 · 09-25-2013, 02:31 PM

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.

mad_sb · 09-25-2013, 03:17 PM

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

mad_sb · 09-25-2013, 03:18 PM

Quote:

Originally Posted by xjohnx

Mine sat overnight and did not reset.

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.

xjohnx · 09-25-2013, 03:23 PM

Quote:

Originally Posted by mad_sb

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

feldy · 09-25-2013, 03:56 PM

my build date is also 4/12

feldy · 09-26-2013, 04:31 PM

Quote:

Originally Posted by Hawaiian

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

Were you able to do any logging?

09-24-2013, 05:55 PM	#15
mad_sb Senior Member Join Date: Jan 2013 Drives: 2013 Asphalt FR-S Location: Orange County Posts: 1,639 Thanks: 632 Thanked 982 Times in 537 Posts Mentioned: 100 Post(s)	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? __________________ ~Namaste~ 2013 Asphalt FRS

09-24-2013, 06:59 PM	#16
feldy Senior Member Join Date: Aug 2011 Drives: 2013 FRS Asphalt Location: SF Bay Area Posts: 1,155 Thanks: 309 Thanked 335 Times in 212 Posts Mentioned: 21 Post(s)	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? __________________ 2013 Scion FR-S AT Picked up 5/30/2012

09-25-2013, 12:09 PM	#18
feldy Senior Member Join Date: Aug 2011 Drives: 2013 FRS Asphalt Location: SF Bay Area Posts: 1,155 Thanks: 309 Thanked 335 Times in 212 Posts Mentioned: 21 Post(s)	Mine always resets when the car has been sitting. __________________ 2013 Scion FR-S AT Picked up 5/30/2012

09-25-2013, 02:27 PM	#22
Hawaiian That guy Join Date: Feb 2012 Drives: Ultramarine mt FR-S Location: chicago Posts: 2,370 Thanks: 692 Thanked 1,389 Times in 730 Posts Mentioned: 71 Post(s)	I will test this tonight after work, and tomorrow after an overnight sit. __________________ Ultramarine mt FR-S P&L stage 1 turbo Prime Motoring Flex fuel Jr Tuned 506whp @17psi (e73)

09-25-2013, 03:17 PM	#24
mad_sb Senior Member Join Date: Jan 2013 Drives: 2013 Asphalt FR-S Location: Orange County Posts: 1,639 Thanks: 632 Thanked 982 Times in 537 Posts Mentioned: 100 Post(s)	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 __________________ ~Namaste~ 2013 Asphalt FRS

09-25-2013, 02:31 PM	#23
R2 Senior Member Join Date: Nov 2012 Drives: FR-S Location: Sask., Canada Posts: 250 Thanks: 84 Thanked 89 Times in 55 Posts Mentioned: 22 Post(s)	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.

09-25-2013, 03:56 PM	#27
feldy Senior Member Join Date: Aug 2011 Drives: 2013 FRS Asphalt Location: SF Bay Area Posts: 1,155 Thanks: 309 Thanked 335 Times in 212 Posts Mentioned: 21 Post(s)	my build date is also 4/12 __________________ 2013 Scion FR-S AT Picked up 5/30/2012

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