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Driveline, Engine & DME Tuning
Talk about driveline improvements, NA tuning and DME tuning your E46 BMW here. This includes diffs, intakes, exhausts, chips, software and OBD tuning.

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Old 07-02-2016, 02:13 PM   #1
cwarel
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ISAless Help

So I followed the instructions on ms43wiki on how to remove isa.
1) So i took ISA unit out completely and there was a hole size about 3/4 inch))
2) Went to home depot and bought a thing that you should put on the leg of ur chair so it doesnt scratch the floor , it has a cone shape and its thick rubber so it fits in the whole perfectly blocking all the air.
3) ECU parameters changes , moment where i spend 3 hours doing it , cuz 3 times tunerpro closed on me without saving the progress so i had to do it over))
So here is my big question there is 2 lines that i cannot find which are
dummy_w_1: 800
c_dyw_cycnr_is: 150
I check abbreaviations and still couldnt find them anywheres
So the car runs without them , but it stalling out sometimes ,and linear throttle works the best with ISA delete , well i think so)
I can upload my file if you want to check it just lemme know
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Old 07-02-2016, 02:17 PM   #2
daniel_f.
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Dummy_w is not necessary to Change, i Need to Look up tue other one
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Old 07-02-2016, 11:55 PM   #3
cwarel
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So also I have a question how can i raise rpm and make it more stable? ( i live in new york and its hot)
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Old 07-03-2016, 01:56 AM   #4
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Unfortunally it wonŽt recognize higher idlespeed Targets (right now!), so the easiest work around is to raise idlespeed Targets and open the throttle just a bit more.

It should automatically adjust the throttle to whatever is needed, however it currently doesnŽt do it, so its still experimental.
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Old 07-03-2016, 01:09 PM   #5
cwarel
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alright sounds simple enough , how do i do it ?)
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Old 07-03-2016, 01:49 PM   #6
daniel_f.
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Modify the corresponding maps?
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Old 07-03-2016, 02:09 PM   #7
cwarel
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alright ill look into that later on today
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Old 07-04-2016, 07:02 AM   #8
daniel_f.
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Stay tuned for an amazing update

Seems like a fellow MS43 artisan found the trick
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Old 07-04-2016, 09:35 AM   #9
sda2
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Very curious for that as well! Any idea of how long it takes?

Is there some kind of public information on what the dev team does at the moment?

Last edited by sda2; 07-04-2016 at 09:36 AM.
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Old 07-04-2016, 09:40 AM   #10
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Quote:
Originally Posted by sda2 View Post
Very curious for that as well! Any idea of how long it takes?

Is there some kind of public information on what the dev team does at the moment?
WeŽre being lazy right now Its been on test for two days so far and right now throttle, ignition and fueling is used to set idlespeed. I havenŽt heard back if the idlespeed setpoints are working like expected, so its probably another few days until its getting published.

Next topic is most probably clean alpha/n, but i wanna rewrite some of the code before that gets published.

Next next topic is most probably variable Launch with bang and NoLiftShift, weŽll see.
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Old 07-04-2016, 09:46 AM   #11
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Talk to diablorojo. About the Isa removal, he has just gone through it. I helped him with high rpm at idle and reducing the hunt.

The idle aim numbers etc still work as normal and the hunt is removed by changing the vanos, ignition and icv starting position.
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Old 07-04-2016, 09:56 AM   #12
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Send me a PM on this please.
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Old 07-04-2016, 10:29 AM   #13
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Thanks Daniel!

What about PUC? I heard it doesnt really shut down the injectors.
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Old 07-04-2016, 10:34 AM   #14
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Sorted
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Old 07-04-2016, 10:53 AM   #15
sda2
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That's very very nice to hear! Can't wait to get my car back and throw this thing out!
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Old 07-04-2016, 01:34 PM   #16
daniel_f.
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Idlespeed setpoint works

So its official: ISAless is now finally possible and works perfectly. No hunting, no hassle.

Thanks to Tobias S. for figuring it out
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Old 07-04-2016, 02:19 PM   #17
sda2
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Thanks for the solution Tobias!

Is it really "only" changing these four parameters?

c_abc_inc_isa_1: 0
c_abc_inc_isa_2: 0
[edit]

Last edited by sda2; 07-06-2016 at 04:51 AM.
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Old 07-04-2016, 02:22 PM   #18
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Originally Posted by sda2 View Post
Thanks for the solution Tobias!

Is it really "only" changing these two parameters?

c_abc_inc_isa_1: 0
c_abc_inc_isa_2: 0
(edit)

Had another chat with Tobias and i really start to wonder about myself... I canŽt count the hours i spent disassembling and comparing dozen of subs in IDA and at the end of the day, its just supressing the DTCs... Really makes me wonder if automotive engineers tend to overcomplicate things...

IŽll quit work earlier tomorrow to give it a test!
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Old 07-04-2016, 02:26 PM   #19
sda2
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Better throttle reaction? Can we now make the throttle linear?
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Old 07-04-2016, 02:31 PM   #20
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I haveŽt tested it, so canŽt comment on the throttle reaction. Second part should be doable now
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