[BurrNinja]

Well I've been hunting down the cause of my low idle for a bit now.
Things I've replaced.
Valve cover + gaskets
breather hose
spark plugs
coils
air filter
new intake manifold gaskets
o ring seal on vanos (had air leak) made idle go from 550 to 520ish.
Breather hose was clogged causing bad low power and alottt of condensation. after replacing that I don't notice the exhaust pipe smoking like it used to.

Almost seems like an impossible fix without knowing the cause. Also when I replaced my breather hose seen a mouse nest under the intake manifold. Didn't see any wires that were torn into.

Any ideas what can make idle so low?
Valves were very clean with 103K miles.

[tlow98]

Have you done a smoke test? Would help with the intake side...

[BurrNinja]

Originally Posted by tlow98

Have you done a smoke test? Would help with the intake side...

Yes, only leak found was that o ring on the vanos. I'll have to try another test with that fixed

[gunnerxq]

Who knows. I had a low idle problem but I put on a free flowing cat back, K&N filter and cut out the charcoal filter, put in a 3 stage intake manifold and got the stage 2 AA tune and my low idle problem went away. Idk when exactly though.

Also check your battery, put in some techron fuel cleaners, check your serpentine belt and drive the crap out of your car. And maybe it'll go away. Also for some reason whenever I put Sunoco in my car it would take forever to start and would crank over a few times. It always happend with Sunoco without fail, didn't matter the station. Idk my car is weird.

[gunnerxq]

Maybe it was just programmed weird or reverted to a lower value and you actually have to raise the idle value through the computer?

[BurrNinja]

Originally Posted by gunnerxq

Maybe it was just programmed weird or reverted to a lower value and you actually have to raise the idle value through the computer?

Do you know if there are multiple values in inpa or the other one that effect idle rpm?

[rjahl]

Originally Posted by blackwidow328i

Do you know if there are multiple values in inpa or the other one that effect idle rpm?

You can not make permanent changes to the idle speed with INPA.

[BurrNinja]

Originally Posted by rjahl

You can not make permanent changes to the idle speed with INPA.

The program I used made it permanently on there until I restarted the program an saved it. Also going through the same program it was showing my factory idle set was at 640 which doesn't get near that. There's gotta be something off which I'm not gonna just throw parts at it if it doesn't display a cel.

[BurrNinja]

Originally Posted by BimmerGeeks

Rheingold can bump it up +150rpm permanently.

I will have to do this in the next days.

[JuniorB]

Have you checked if for a software update? Clean your maf,and ck filter, check your iat sensor and that it's working.

[BurrNinja]

Originally Posted by JuniorB

Have you checked if for a software update? Clean your maf,and ck filter, check your iat sensor and that it's working.

A software update? how do I go about this I know when I run inpa in order to code or view live data I have to use msdv70 not 80 which I'm running the n52 ofc non xi

[BurrNinja]

Also another addition when I was checking inpa live data I read the fuel pressure had to convert to psi which apparently was reading 87psi. Reading up on that should only be 72.5psi. What would cause this? and would that be a root cause to effect idle rpm?

[rjahl]

Originally Posted by BimmerGeeks

Rheingold can bump it up +150rpm permanently.

Is that a coding thing? From memory the idle speeds are hard coded in the calibration file and rheingold can't change those.

[BurrNinja]

Originally Posted by BimmerGeeks

I know I sent you Rheingold a while back, did you ever get around to getting it installed?

If so, run a vehicle test, hit vehicle management, service functions & select powertrain.

You'll see the ABL labeled "idle adjustment" pop up in one of the options.

Not yet unfortunately. I will have to get it done tonight. One more thing, will this auto adjust the rpm when the AC button is on. When I did it with inpa I had to adjust ac rpm to the same amount otherwise the idle would go from 650 set to 600 like the idle rpm was still at 550.

[rjahl]

Originally Posted by BimmerGeeks

I'm not sure what method Rheingold goes about doing it, but you can manually adjust - or + 150rpm and choose to save for one cycle, or a permanent adjustment.

You can also adjust the idle with AC on as well, it is 2 separate adjustments where one doesn't effect the other. I raised mine +80 without AC, +110 with AC over a year ago, still there today.

I do have to readjust every time I reflash a new tune though.

Honestly, no.

I've been so involved with this transmission tuning that I have not looked at anything else.

Seems like I take three steps forward the two back. Slow going.

Out of curiosity, did you ever reset your trans adaptions after flashing the E60 file? I accidentally reset mine trying to learn the encrypted adaptation values and the transmission completely changed again. I've changed back to a simi- stock file but it still shifts much harder than I can remember. Light load shifts are great but seems a bit aggressive with higher throttle settings. It's actually really fun.

[hassmaschine]

Originally Posted by rjahl

Is that a coding thing? From memory the idle speeds are hard coded in the calibration file and rheingold can't change those.

There's an adaptation value that is stored in non-volatile memory (NVMY you've probably seen this acronym in the damos). Since the adaptation is stored in memory that isn't reset when the computer is powered down, the change is permanent (there are lots of adaptations stored in this area).

[rjahl]

Originally Posted by hassmaschine

There's an adaptation value that is stored in non-volatile memory (NVMY you've probably seen this acronym in the damos). Since the adaptation is stored in memory that isn't reset when the computer is powered down, the change is permanent (there are lots of adaptations stored in this area).

Thanks for the explanation, I got the NVR part I just did not think INPA has wright access to any of it.

[BurrNinja]

Will torque pro read long term fuel trim? when I try on torque lite it stays no value.

[JuniorB]

The software updates are what the dealer may have encountered during some time, and revised it. This also may be an option first, especially if does it with out hardware replacements. It may be that one thing your looking for, being I have a late 06 for 07 year car, I had two of them a couple years ago and definely,felt the difference when I left. The car was in for that steering wheel lock warning thru the I drive .

[BurrNinja]

Originally Posted by JuniorB

The software updates are what the dealer may have encountered during some time, and revised it. This also may be an option first, especially if does it with out hardware replacements. It may be that one thing your looking for, being I have a late 06 for 07 year car, I had two of them a couple years ago and definely,felt the difference when I left. The car was in for that steering wheel lock warning thru the I drive .

what is the cost for this? and do they charge if no update?

[BurrNinja]

Originally Posted by BimmerGeeks

You can update it yourself with winkfp

I'm not so sure about doing that myself after reading things on it.