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Go Back   E46Fanatics > Tuning & Tech > Driveline, Engine & DME Tuning

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 04-09-2012, 08:48 PM   #1
gymrat1965
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Join Date: Jan 2012
Location: Moorestown, NJ USA
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My Ride: 2004 BMW 330CI
330CI with ZHP trans controller EGS unit

I own a 2004 330CI with the GM Steptronic transmission. I purchased from another member on this board the EGS - transmission controller out of a 2005 330CI with the ZHP option and also the GM Steptronic transmission. As I hoped since the unit's original car was one year newer but both were for 330 engines with GM Steptronic transmission, it worked perfectly in my car with no programming required. I removed mine and replaced it with the unit with the ZHP programming on it. The shift points when flooring the pedal are higher as I expected and wanted. They were 6,300 & 6,500 rpm but now are 6,500 & 6,600 rpm when it shifts into 2nd & 3rd respectively. I now have to get the DME flash tuned for the higher red line as the engine rev limiter doesn't let the engine rev past about 6,700 rpm and so the transmission will not shift into 4th gear since the rpms won't get high enough; it just hangs at about 6,700 rpms until you let off the gas. Also during normal driving there was a big difference between shift points in D vs S mode; the S mode shift points were a little high for normal driving but in D the rpms were too low for enjoyable driving. Now the difference between the two modes is maybe half; meaning the transmission holds each gear a little longer keeping the rpms higher making the car more responsive to drive; a nice compromise between the two modes. Just right for normal but enjoyable driving. Overall I am happy with the swap of the control unit; but it does speed up the need for a tuning flash of the DME to allow the engine to rev higher. I am looking at Eurotune as they have a distributor not that far from me.

Anyway, I just wanted to relay this swap information for to others on this board to potentially benefit from. It was cheaper then the Steptronic software flash from AA or ESS.
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Old 04-30-2012, 12:08 PM   #2
SUHLeen
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Join Date: Jun 2008
Location: Ohio
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My Ride: 2005 Saleen Mustang
Have a part number for the EGS by any chance? And does anyone know if this will work in the ZF transmission? I don't even use D anymore cause the shifting SUCKS... Only S mode or manual mode for me.
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Old 05-02-2012, 12:56 AM   #3
daniel_f.
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Join Date: Jul 2011
Location: Germany
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doesnīt fit nor works on a ZF.

even if it would fit, it would be easier and much cheaper to just flash the zhp software onto the existing EGS.

@gymrat1965

flash your dme with the zhp software and it will work fine with the raised shift-rpms
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Old 05-09-2012, 03:53 AM   #4
Hageee
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MS43 != MS45 Daniel (KGB44 )
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Old 05-13-2012, 02:37 AM   #5
daniel_f.
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Quote:
Originally Posted by Hageee View Post
MS43 != MS45 Daniel (KGB44 )
donīt get it...

2004 M54 -> MS45.1

ZHP -> MS45.1

2004 M54B30 + ZHP Flash -> redline at ?6800?
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Old 05-13-2012, 09:02 AM   #6
gymrat1965
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Daniel_f
Would the ZHP software be an ok tune without the ZHP camshafts? I would like the higher rev limit but the cams are different.
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Old 05-14-2012, 09:28 AM   #7
daniel_f.
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well, it depends on how lean your engine is actually working. have a look at your lambda-integrator values via inpa. i guess dme sends longer voltage to the injectors which means more fuel and therefore richer mixture, when using zhp software.

ms45.1 has wideband lambda, so you should be able to really see what the mixture is doing under WOT, instead of just guessing when using ms43.
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