V8 Bruce Davis chip upgrade

Both of these references are worth reading so you can ask proper questions of Davis Performance to determine what you might be getting for your $600...

Motronic 5.2 Reprogramming


and

http://www.p38arover.com/rover/p38a/...21_Systems.pdf

plus

web.nanocom.it/.../BOSCH%20MOTRONIC%20V8%20P38%20and...

the ECU is easily turned into a "brick" and can only be changed 14 times! So if you want to experiment with different maps... tough luck.

I've often wondered if a modified GEMS solution using Thor sensors might not have been a better option for remapping... but I don't have the smarts to do this :(

Well I did see the dyno results if that helps

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Originally Posted by Hoges

Both of these references are worth reading so you can ask proper questions of Davis Performance to determine what you might be getting for your $600...

Motronic 5.2 Reprogramming


and

http://www.p38arover.com/rover/p38a/...21_Systems.pdf

plus

web.nanocom.it/.../BOSCH%20MOTRONIC%20V8%20P38%20and...

the ECU is easily turned into a "brick" and can only be changed 14 times! So if you want to experiment with different maps... tough luck.

I've often wondered if a modified GEMS solution using Thor sensors might not have been a better option for remapping... but I don't have the smarts to do this :(

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The p38 link didn't work, and the first one is for the Thor motor?

Quote:

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Originally Posted by disco2_dan

Well the extra km per tank is the main reason I'm doing it aswell!! The extra power was just the Icing on the cake...
Was this the Davis chip you got??
I spose even if I don't get the extra km per tank the little more power will be helpful going up the mountains and towing the boat around

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Yep the Davis one.

D2a as mentioned can be reflashed, so its still your ecu that they remap.

The Bosch Motronic 5.2 EMS was used in BMW 3 series, as well as by Ferrari and Land Rover. Land Rover introduced it with the Bosch upgrade known as the Thor motor. Previously used Lucas SAGEM system. BMW engineers seemed to have gone out of their way to make the Motronic 5.2 system highly proprietary as explained in the first reference.

I am very surprised that BD Performance are reflashing the EPROM of the Thor Motronic EMS through the OBDII port and charging $600 for the privilege...

I might be sceptical :eek::wasntme: but I'd really like to see the results


EDIT: check out this -applies also to D2 Thor V8 http://www.aulro.com/afvb/p38a-range...rket-chip.html though things may have moved on from here...but I doubt it

The information on the Davis website is rather confusing as the years 1999 - 2004 cover the entire D2 production period :
[I]Extract from Davis Performance web site
'Petrol Engines V8i

2002 - 2004 Flashable (programmable) chip through the diagnostic port
Erase the management program and re-program.
1999 - 2004 Series 11
Has a non programmable ECU replace chip'[I]

I have spoken to Bruce a couple of times about this & have been assured that it is worthwhile and should see an appreciable increase in performance. Other forum members have said that they have noticed gains after rechipping/reflashing.

not sure if this is relevent hoges but this was a gems re-chip i think

[ame=http://www.youtube.com/watch?v=2jE-35OmPRs]How to chip your Gems Rover V8 ECU - YouTube[/ame]

G/day Disco2 Dan
How did it all go , are you happy with the chip upgrade:)
Cheers smally

Quote:

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Originally Posted by smally4.6

G/day Disco2 Dan
How did it all go , are you happy with the chip upgrade:)
Cheers smally

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Lol I forgot it was today I thought it was tomorrow, he rang this arvo and asked what happened I said nothing wasn't I booked in tomorrow he said no it was today I was like sooooo sorry he said no worries come in tomorrow at 8am...

Had a D1 3.9 ECU chipped By Bruce Today, I'll get it back tomorrow via express post. Good service and a good product for these. Gives a great strong idle, excellent midrange and economy remains unchanged or better. (Not for the first few tanks though as the extra poke is experienced:cool: Must also have a little more advance dialed in, 12degBTDC, and a functioning vac advance unit. Also helps a little to increase the MAF output from .9 to 1V up to 1.2V.


JC