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Old Mon, Jun-18-2018, 05:05:49 PM   #1
mikerob
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Default Temperature Gauge Coding

I read in one thread somewhere that the temperate gauge is designed to more or less sit at the 12 o'clock position if the water temperature is between a certain temperature band. I also recall in the post there was a way to remove or tighten this band so that the needle reacts more to changes in water temperature. But I can not recall where I read this.

I believe the changes had to be made in the IKE EPROM hexadecimal fields via PASoft

Can anyone point me to this thread - or post a procedure for this.

Thanks
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Old Mon, Jun-18-2018, 07:05:17 PM   #2
Obioban
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Default Re: Temperature Gauge Coding

The e46 M3's buffer is tiny compared to other BMWs-- very minimal benefit to be had here.
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Old Tue, Jun-19-2018, 12:01:31 PM   #3
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Default Re: Temperature Gauge Coding

here's the old thread, but as Ian says, the M3 is only 10 degrees in that 'buffer zone', so its not really in need of tweaking. you can validate this from the fact that the needle DOES move slighlty during driving condition changes, vs other BMW's where its just glued to the center unless the car is either stone cold or on fire.

http://forum.e46fanatics.com/showthread.php?t=1013600
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Old Wed, Jun-20-2018, 04:19:10 AM   #4
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Default Re: Temperature Gauge Coding

Quote:
Originally Posted by geargrndr View Post
here's the old thread, but as Ian says, the M3 is only 10 degrees in that 'buffer zone', so its not really in need of tweaking. you can validate this from the fact that the needle DOES move slighlty during driving condition changes, vs other BMW's where its just glued to the center unless the car is either stone cold or on fire.

http://forum.e46fanatics.com/showthread.php?t=1013600
Not only is the buffer 10 degrees, but the S54 has a tendency to rest a little bit before the buffer zone starts (buffer is from 85 - 95 C, M3 likes to hang out around 83C IME). So that needle will move a decent bit in day to day driving.
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Old Wed, Jun-20-2018, 07:44:24 PM   #5
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Default Re: Temperature Gauge Coding

Thanks guys for your comments. Looks like I will try out my new PASoft cable and software by doing the Speedometer Error Reduction....instead of this Temperature Gauge Reset.

Any comments to my other thread regarding the Auto Leveling to Manual Leveling LCM Modification?
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- 2000 BMW 323i (E46) Sport Touring, 330i Front Calipers & Rotors, Bilstein Shocks and Struts, SAP Delete, Sirius Receiver, HID/Projector Headlights.
- 1994 BMW 325is (E36) S50 Engine, Schrick Cams, Custom Chip, 3.46:1 LSD Final Drive, 330i Front Calipers & Rotors, (Lots of Modifications)
- 1987 BMW 325is (E30) European ECU and Camshaft, M3 Suspension, Headers with Custom Exhaust.
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Discussing Temperature Gauge Coding in the Coding and Tuning Forum - Discuss all avenues of coding and tuning here! at BMW M3 Forum.com (E30 M3 | E36 M3 | E46 M3 | E92 M3 | F80/X)