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Re: Motronic v Aftermarket ECU [Re: ] #521680
15/01/2008 03:36
15/01/2008 03:36

S
strat24v
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strat24v
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S



The ecu on my stratos replica uses knock sensors but quite a lot of people don't use them.

The knock control on my omex actually takes a 'measurement' of knock at idle just to get a base line reading this is then set as 'zero', after that it will then take a accurate reading. Without this facility the sensor can actually detect knock when there isn't any, just the engines usual clatter.

Re: Motronic v Aftermarket ECU [Re: ] #521831
15/01/2008 14:12
15/01/2008 14:12

S
sediciRich
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sediciRich
Unregistered
S



strat which omex are you using?

Re: Motronic v Aftermarket ECU [Re: ] #521907
15/01/2008 16:11
15/01/2008 16:11

S
strat24v
Unregistered
strat24v
Unregistered
S



710

Re: Motronic v Aftermarket ECU [Re: ] #522203
15/01/2008 20:26
15/01/2008 20:26

L
Lars_DK
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Lars_DK
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L



Excactly Strat24v. The same calibration has to be done when mounting the Vems, but lots of attempts have shown that the simple way to do it is to hit the block with a wrench and record the Hz off the impact on a laptop. Then put that into Megatune, and that is it more or less. But its probably harder than i make it sound, haven't tried yet!

Re: Motronic v Aftermarket ECU [Re: ] #522353
15/01/2008 22:36
15/01/2008 22:36

S
sediciRich
Unregistered
sediciRich
Unregistered
S



Bit off topic strat but if you didnt know you can link omex with racelogic DL1 data logger to log engine parameters with the gps data. Only found that out at autosport - and bought one for my 600 as the lesser model had no datalog.

Regards the knowck sensor the set up is the same for the omex hitting the block. I will wire up the coupe sensor and decide whether to play with the knock.

Rich

Re: Motronic v Aftermarket ECU [Re: ] #522816
16/01/2008 12:06
16/01/2008 12:06
Joined: Nov 2006
Posts: 1,580
Melbourne, Australia
Scuderia Offline
My life on the forum
Scuderia  Offline
My life on the forum

Joined: Nov 2006
Posts: 1,580
Melbourne, Australia
Motronic knock circuit also has a reference. It will actually set a code if it does not pick up enough "noise".

Re: Motronic v Aftermarket ECU [Re: ] #523038
16/01/2008 17:36
16/01/2008 17:36

S
sada1000
Unregistered
sada1000
Unregistered
S



 Originally Posted By: Lars_DK
hit the block with a wrench and record the Hz off the impact on a laptop. Then put that into Megatune and that is it.

See? This is a proper way to fine tune your engine management system \:D

Re: Motronic v Aftermarket ECU [Re: ] #523052
16/01/2008 17:48
16/01/2008 17:48

S
suba
Unregistered
suba
Unregistered
S



I've nearly done that a few times when I've got hacked off with it..... \:D

Re: Motronic v Aftermarket ECU [Re: ] #525465
20/01/2008 02:50
20/01/2008 02:50

L
Lars_DK
Unregistered
Lars_DK
Unregistered
L



Does your speedometer work with Omex/Motec? Because that is one of my concerns when mounting a new ecu system.

Re: Motronic v Aftermarket ECU [Re: ] #525501
20/01/2008 03:25
20/01/2008 03:25
Joined: Dec 2005
Posts: 10,728
N.E Scotland
mattB Offline
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mattB  Offline
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Joined: Dec 2005
Posts: 10,728
N.E Scotland
Surely the speedo just reads off the gearbox. It's got nowt to do with the ECU.


Death-rattle-tastic
Re: Motronic v Aftermarket ECU [Re: mattB] #525534
20/01/2008 04:16
20/01/2008 04:16
Joined: Dec 2005
Posts: 17,366
Staffordshire
Nigel Offline
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Nigel  Offline
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Joined: Dec 2005
Posts: 17,366
Staffordshire
ECU knows the speed as well - I guess it uses the same signal (although the ECU sees it in km/h)


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Re: Motronic v Aftermarket ECU [Re: mattB] #525621
20/01/2008 15:37
20/01/2008 15:37

S
sediciRich
Unregistered
sediciRich
Unregistered
S



 Originally Posted By: mattB
Surely the speedo just reads off the gearbox. It's got nowt to do with the ECU.


Correct.

Re: Motronic v Aftermarket ECU [Re: ] #525921
21/01/2008 02:35
21/01/2008 02:35

G
Gralecoupe
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Gralecoupe
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G



Given that the 20VT uses a Bosch Motronic ECU and that Bosch do a mappable motorsport range can the two be interchanged easily enough? I wonder if there is much advantage to be had?

http://www.bosch-motorsport.de/content/language2/html/2953.htm

Re: Motronic v Aftermarket ECU [Re: ] #525929
21/01/2008 02:54
21/01/2008 02:54

K
Kenno
Unregistered
Kenno
Unregistered
K



A large portion of the cost is in mapping. Looking at some of those prices it'll be cheaper to get MoTec!

Re: Motronic v Aftermarket ECU [Re: ] #525948
21/01/2008 03:38
21/01/2008 03:38

G
Gralecoupe
Unregistered
Gralecoupe
Unregistered
G



Yeah, the price does work against it a bit!

From what I can make out this is a step above what Motec does though, it's probably more at home in the likes of F1 or Le Mans racers, maybe a bit more than we need eh?! I did think it was interesting though and never knew that Bosch had a Motorsport division.

On the cost of mapping and speaking from my experience:
If you can beg or buy cheaply enough a base map to get your engine running then you are 75% of the way there, then you can either fine tune it yourself or (like me) get someone else to do it - It only cost me about £300 to have mine done and it gives good power and economy, still needs some cold start adjustment, although this could be put down to hard plugs and an old fashioned distributor system.

Re: Motronic v Aftermarket ECU [Re: ] #547752
22/02/2008 22:07
22/02/2008 22:07

L
limited733
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limited733
Unregistered
L



Does anyone have any DMOS file where everything is explained?

Re: Motronic v Aftermarket ECU [Re: ] #547889
23/02/2008 00:49
23/02/2008 00:49
Joined: Dec 2005
Posts: 5,405
Castle Combe
Flea Offline
Forum is my life
Flea  Offline
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Posts: 5,405
Castle Combe
You won't find anything anywhere that explains the Motronic for the 20vt!! It has taken a me a lot of time, effort and research to get to grips with it all and that is starting from a knowledge base of zero!! \:D


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