Software upgrade for e46

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lovebmw

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Hi guysCan anyone enlighten me about software upgrades that people claim can add additional BHP to my e46 318. I guess i am looking at ways of adding the BHP without "destroying" the engine. and don't tell me about the 6 potter...i know i know....so any tips...and where to go and how much going to cost me...
 
Yeah..sorry I am kinda new to the jargons...something like remapping and reinstalling a new software, configured to the car and able to give the additional BHP...i have been told changing Dynamic crank pulley also improves the performance of E46. so i am thinking of doing both for my e46 3.18 end 2002.

Any advice Jarance...if it provides significance power...i dont mind...(was dreaming about the sedan e46 330) hahahha...

jarance;328261 said:
Maybe you are thinking about remapping the ECU???
 
i have heard of this but I think this is just a myth.
Even if this is true I think the effect will be minimal.
Anyway what sort of 318 are you driving? 1.9 or 2.0?

planta
 
planta, personally I have never try it myself especially mine is an e36.

In theory, the E46 ECU eeprom can be remapped. This is similar to having another chip riding on top on the existing chip (piggy ride). eg super chip blah blah..

Even with piggy chip, there is only a small improvement for a 4 potter. hence it is not worth the money spend for the extra power.
 
The BMW software upgrages are technical updates of the DME or another other control module software.

Your E46 is DME is capable of programming and erasing electronically or in short ' flash programming' without being removed from the vehicle. It is done through the diagnostic port, TXD.

The E46 DME's memory are EEPROM type modules while the older E36/34 types are EPROM types which would require a chip change or rechipping to change the software parameters. Erasing of EPROM cannot be done electroically but by exposure to UV light for a set time period. So don't peeel the sticker paper covering the top of the chip on E36's.

Coding on the other hand sets functional features in a module something like activating and deactivating options pre-existing in your vehicle.

Your DME is capable of 14 times of reprogramming as set by the manufacturer. To have software updates done to your vehicle to ensure your DME, AGS, IKE, LCM, GM modules are up to date on software versions and free of tech glitches.

In order to do this at the workshop, specific equipment such as DISPlus, GT1 and SSS must be available and have the current version of CIP [ Coding, Individualization and Programming]installed in these machines. Like our personal computers, there is no downgrade software versions allowed once you have upgraded to the higher version.

BMW has for a while now started to use a new software for coding and programming that's runs on a desktop PC called Progman.

If it adds power, well... u won't know till u flash it and drive. But on E46 4 pots, there's the problem of hesitation during acceleration from standing and the idle revs being too low. The DME software upgrades has resolved these drivability issues.
 
Thanx WC9922

Indeed it is enlightening....there are claims of additional 10bhp and wat not and together with the change of the pulley...including for the alternator...it is supposed to give a higher performance. Difficult to decide unless i opt for the 330 which my itchy fingers are driving in tat direction.

I guess it is a learning point. Once u taste speed with a UDM...very hard for to resist...and you just want more even if you don't use it.

Anyway thanx guys...will scout still...it will cost about RM1k for the software upgrades and many guys now are doing it as they have the GT1 etc programs... hahahahaha...but in the end...it is worth it all.
 
Hi Planta...

Mine is the 2.0....i guess the thing about engine...the bhp wears down with age...although mine is a local 2002 and registered in 2003 and mileage of 90k
 
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