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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 01-17-2020, 05:43 PM   #1
d_cleverzz
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Join Date: Jan 2018
Location: Florida
Posts: 553
My Ride: Turbo 5spd 330cic
Year: 2001
Model: 330CIC
Transmission: 5 Speed Manual
Any MSS54 Tuners? I need your help!

Hello,

So I have spent a total of about 7 hours trying to get these silly burbles as per my friends request. I am getting frustrated now. Out of all things, this happens to be the brick wall Iím hitting, and itís quite annoying.

Any advice and suggestions would be helpful. Iíd need help from people who have tuned the MSS54/MSS54HP ecu, especially as I will e naming out tables that refer specially to those ecus.

Thank you

Yes, of course I retard timing in low load (rf) area of the minimum injection, as it was the only ignition table I could find that would make sense. As for, K_DYN_SA_TSPERR I set it to both 0 and 255 with not much success but found on m3forum suggested that 60 seconds best, idk why. Either way, with this setup, 60 seconds, and whatever ignition retard I chose, the car barely pops and it does it whenever it wants or with slight throttle tap, but even then, it can be random. In this state, it seems to only to disable overrun fuel cut (injection fuel on throttle close) for a split second. So on off throttle, it'll hold ignition retard but there's no fuel. At first, I thought maybe it was too rich, so I leaned up the fuel table in low load "(rf), this didnt seem to work either.

Now, when increasing timers in KF_SA_TIME_TMOT_N40, the car will conitnuously have a silent "gurgle." but no ignition retard, even with the previous settings. So... with the increased timer, it is injecting fuel as it "should" but now no longer retards timing.
Setting this to stock, I evene change tables like KL_SA_N40_HYS_GANG, KL_DYN_SA_DPWG_SP, and KL_SA_N40_TMOT to 8000 rpm in all gears to try increase the hysteresis where overrun happens so we never exceed the threshold. Same thing occured, dumps fuel, get barely audible gurgles, but never ignition retard, even with the same settings as before.

So in conclusion, I'm finding only one of the two is happening at once, either ignition retard\no fuel, or no ignition retard\but injecting fuel. I cannot figure out what is not allowing the two to happen together.

Ive read, and also experienced, this motor is sensitive to EGTs, when getting ignition retard, coolant temp rises to 97 degrees fahrenheit, when at a stand still.
Never had this with any other motor. Im sure if it was injecting adequate fuel, it would supress this situation.


I am wondering if there a config switch somewhere or if possibly EGT monitoring is preventing from these two events happening simultaneously.
I know this possible, RKTunes is a great example that these motors can run this sort of stuff aggressively. I cannot find that tiny secret that "unlocks" it.

Thanks for taking the time to read and help .




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Your friendly turbo 330cic,
d_cleverzz

Last edited by d_cleverzz; 01-17-2020 at 05:45 PM.
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