M42club.com - Home of the BMW E30/E36 318i/iS
DISCUSSION => Engine management => Topic started by: bbarnumboy on December 19, 2010, 01:03:18 PM
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Anyone have any experience or insight on this system? claims ability to adjust timing as well? thought the piggybacks could not do that?
http://www.mapecu.com/
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someone on the forums for map-ecu requested the diagram the the e36 m42 and he had one made up. the guy was running a downing atlanta sc kit and wanted to delete the afm and get rid of the rrfpr for finer tuning. It says it can do timing so that would be perfect correct?
it is a piggy back, there is a diagram for the e36 m42 engine. it retains the stock ecu and recalculates the signals from the new map sensor into a maf signal for the stock ecu etc, with timing and boost parameters. it is a piggy back/splice in extra ecu.
click on the about tab on the home page it says its a piggyback.
essentialy yes you will need to tune it in. but retains stock ecu.. im done with megasquirt. i had a really bad experience with it years ago and wish to not return that route lol
i cant attach the diagram, maybe i can get it to work later but it taps the following signals.
-rpm
-ignition
-ground
-TPS
-02 sensor
- last one is hard to tell and would need clarification but looks like the afm signal is cut from Motronic and map sensor is installed onboard, so requires a vacuum line like a megasquirt does. Runs AIT i believe to map-ecu, map-ecu has a wire that now connects to the afm signal on Motronic
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I looked at on of these a while ago. The stumbling block for me was the unit can do ignition but as an interface between the factory ecu and the igniters. Our igniters are part of the ecu which means you have to hack the factory ecu to build an external igniter circuit. Note a 4 channel bosch igniter is $400nzd from Map-Ecu which makes for an expencive setup though i built my own for $40nzd
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Anyone have any experience or insight on this system? claims ability to adjust timing as well? thought the piggybacks could not do that?
http://www.mapecu.com/
I had my rally car professionally tuned by Wayne at ChipWizards in Rochdale (UK) after putting in a set of CatCams & some other engine modifications. No piggyback system was required as he plugged his laptop straight into the ECU & altered the timing & mixture throughout the increased rev range on the rolling road. It was well worth the money as he spent many hours getting it just right for me to use competitively :D