Difference between revisions of "Porsche 928 LH Replacement Prototype"
From Francois Louw
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| + | ==Big Update and working system 1 April 2014== | ||
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| + | Ok, it has been a long time since I updated. I went to South Africa for a holiday during February and March. This allowed me to do some major updates and testing. The result? A working and stable, reliable LHR ECU. I also went on a tour of South Africa with my girlfriend and this tour included a long road trip in the Porsche. Before I could do the road trip I did some changes. | ||
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| + | One big change was that I installed a wideband exhaust sensor that tells me the exact air to fuel ratio. Without this tuning the car is impossible. | ||
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| + | I updated some timing on the interrupts of the firmware. The USB were not loading fast enough before the car starts (by about 50ms) so I delayed the firmware by 50ms to compensate. | ||
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| + | Tuned the fuel map, I did not have access to a full dyno, so the tuning was done using the wideband sensor and driving. I got someone to drive the car while I tuned and checked the wideband readings. | ||
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| + | Some minor fixes, changes and optimisations were done. The result? One awesome car to drive! To test the car proper '''I drove 3800KM with the ECU on the road trip with zero modifications'''. | ||
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| + | To show off I made a proper video of the entire ECU as it is at the moment. This includes the Interface software, logging, opening the log and plotting graphs, Driving with the ECU in the original ECU location. | ||
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| + | '''Stuff to do''' | ||
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| + | Closed loop control. The closed loop control is not programmed, at the moment the ECU works only in open loop mode. I do not have a narrowband (option on my car was without the sensor) and the wideband is not connected. I will not be able to implement and test this on my car in the near future, but any volunteers are welcome that want to test it if they have the sensor. | ||
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| + | '''Selling prototype''' | ||
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| + | At this moment I can make copies of this prototype for people who want it. I need to have at least 5 orders to do a batch. The lead time is 6weeks from date of order till delivery. The price? '''US$300'''. This includes cables and the interface software. What it does not include is the housing or the LH Connector. I do offer the service where you post your current ECU and I will swop it out for you with the connector and inside the original housing, posting back to you your original ECU along with the replacement. Contact me for pricing on that. | ||
