Michelob

has anybody disabled the AIR pump in ARAP or other 6E?? correct me if i'm wrong but i'm guessing it should be done if the air pump is disconnected. i'm using Tunerpro and there's no reference to air pump settings in the provided xdf. can it be done w/ the tunerpro hex editor ?? i found some AIR pump code in the ARAP hac but not sure how it ties in with the hex numbers that tunerpro brings up .

Michelob

ok, think i found it. the activation temp on line LC324 needs to be upped from 14 C to 255. does this sound right ???

LC323 FCB 64 ; 64, ENABLE AIR TO CONV IF IN OPEN LP
; & 100 MSEC DROP IN LV8 < 64
;
LC324 FCB 73 ; 14c COOL, IF LT THRESH, DIVERT AIR
; Cal = (arg + 40) * 256/192
;
LC325 FCB 254 ; 25.4 sec's, IF IN OPEN LP GT THRESH AFTER
; CLOSED LOOP THEN DIVERT
; Cal = arg * 10
;==============================================

3.8TransAM

I deactivate with the temp enable and also the o2 offset of 100mv set to zero as well.

The temp will work also, its just how I do it.

later
Jeremy

vbMike

iTrader: (2)

Does anyone know how to disable AIR in the 165ecm with $32B code? I'm using tunerpro.

JP86SS

iTrader: (1)

A quick look at the BUA hac indicates the temp enable threshold is here.

vbMike

iTrader: (2)

Okay. So how do I modify that using Tuner Pro or some other method?

JP86SS

iTrader: (1)

Add a constant into your XDF at address 30B
(Since I don't see the address in any of the $32 files)
The $32 calibration starts at $C*** so just the later address is needed in TP.
Use conversion formula 0.750000 * X + -40.000000 for Deg C.

vbMike

iTrader: (2)

Okay. Doing this I get a value of 92.75, which I can't tell if it is Celsius or Fahrenheit. Neither value seems to make much sence. Are you sure that is the right address/conversion for 32B?

JP86SS

iTrader: (1)

Did you make the conversion "add a negative 40" ?
If you just add the 40, the hex 49 comes out to 94.75 which is close to what your seeing.

I am looking at the BUA bin file.
I'm an SD guy and not that familiar with the 165 bins to know,
but is there a 32 and a 32B ?
The BUA is indicating 32 so I figured I'd ask.

vbMike

iTrader: (2)

I'm using 32B and there is a difference between 32 and 32B, as far as I know. I'm using tuner pro so I just entered the address 30B and then entered the formula exactly as you have typed it. I wish I could be more help but I'm still new to this.

JP86SS

iTrader: (1)

OK, found it in the 32B "ABTC" hac file at address 311.

vbMike

iTrader: (2)

What would the conversion formula be?

JP86SS

iTrader: (1)

Would be the same conversion because it is a temperature indication out of 255 counts.

merc3065

In Tunerpro RT is there a specific entry that would allow me to edit out the AIR system?

Or do I need to edit the actual hex of the bin?

pandin

For 6E, all you need to do is raise the "If Cool T < 14c, (58.5f) then divert" to a high number like ff (304 F) and the ECM will be fooled into thinking that the air is being dumped to atmosphere. There are more settings just prior to this from loc31E to the loc324 (for the temp). They have to do with higher rpm (4425), min/max load (25/100), and MPH (60)

The next thing you can change is the mv offset at 454 but if this is changed you also have to lower the O2 swing points by 100 mv as this is subtracted when diverting.

The O2 swing points are factory set 100 mv higher then 445 mv (fact) and then if air is added to the exhaust manifold (fact), the 100 mv is subtracted (this is a debated subject). The debate is weather the 100 mv is subtracted air in the manifold or no air in the manifold.

There are similar settings in 32 and 32B just at different locations.

For 6E, I lowered the rpm at loc31E to 225 to divert all the time (this rpm "4425" is where the exhaust pressure exceeded the air pump pressure). Then lowered the swing points 100 mv at loc459-473 and changed the offset to 0 at loc454.

There are two switch settings as to one valve or two in the switches section at 15 bit 2. The double valve is used when an air tube is run to the cat. First valve divert to sec valve or manifold, sec valve divert to atmosphere or cat. A one valve system only has atmosphere and manifold.

This is how I eliminated the "air pump" in the code. I am not smart enough to just "rip out" the actual code.

merc3065

thanks, that is extremely helpful!

IROC_5796

im new to tuning and im using TP maybe its the version i downloaded but i can't seem to find anything about the air divert, can somone help a newbie at this?

Stephen

iTrader: (12)

What is the advantage to tuning for lack of pump vs no tuning?

I simply pulled mine off, still pass emissions standards & get 21mpg, on a 200,000 mile L98!

MikeT 88IROC350

Not in TP RT, but if you were using Tunercat............the answer is yes.
In the constants table, there is an entry called "AIR Divert Enable Coolant Temp." This would be in the $6E tdf. I have mine set to 150degC.

I looked in the $32B, only thing i saw was, "AIR control enable Coolant Temp. Threshold". Not sure if is is the same thing....but it sounds like it.
The main reason to NOT divert the air into the manifolds, is if you eliminated the AIR system altogethor.

This prooves one of the main benefits of having more than one bin editor program.