Guest |695| Posted December 28, 2010 Report Share Posted December 28, 2010 I have a base ignition Map that has been decoded from the stock ECU in the car. It's a TPS / RPM based map. I was going to use this as the starting point for tuning as it works, and can get the car running. What is the easiest way to convert this map to a MAP / RPM ignition map? Quote Link to comment Share on other sites More sharing options...
Guest |59| Posted December 29, 2010 Report Share Posted December 29, 2010 Is the car turbocharged or NA? It will be easier if it is NA. You can start with this : Copy values from the table TPS=0 to MGP = -30. Copy values from TPS = 100 to MGP = 0. Interpolate values in between. Mind you, it is only a starting point. You still have to get it tuned. Quote Link to comment Share on other sites More sharing options...
rayhall Posted December 29, 2010 Report Share Posted December 29, 2010 If the map has these settings it is using TPS and MAP, which is good. Fuel Equation Load=MAP Fuel Table Y axis = TPS Ignition Table Y axis = Map Open Loop AFR Table = On This method uses the map sensor information for the ignition table, and as a lookup of the AFR table to know how to correct the fuel as the manifold pressure changes no matter what the TPS position. Any engine with very big overlap cams or multi throttle bodies with a turbocharger should use this method. If the engine has one throttle and mild cams then MAP for the fuel table Y axis is prefered. Ray. Quote Link to comment Share on other sites More sharing options...
Guest |695| Posted December 29, 2010 Report Share Posted December 29, 2010 Thanks for the Replies: Engine is NA, Single Throttle Body, Dual Plug (distributor) and Mild Cams Quote Link to comment Share on other sites More sharing options...
Guest |59| Posted December 30, 2010 Report Share Posted December 30, 2010 Your car is a Porsche 993? The standard map is not TPS based. It uses a MAF meter. If you have changed cams, the level of vacuum at idle could be rather low. I would suggest you use these settings as suggested by Ray. Fuel Equation Load=MAP Fuel Table Y axis = TPS Ignition Table Y axis = Map Open Loop AFR Table = On Quote Link to comment Share on other sites More sharing options...
Guest |695| Posted December 30, 2010 Report Share Posted December 30, 2010 Sorry you are correct, I have a copy of the Ignition table from the Motronic ECU that is TPS and RPM. See attached. Do you have any experience with tuning Porsche's? any tips? Quote Link to comment Share on other sites More sharing options...
Guest |59| Posted December 31, 2010 Report Share Posted December 31, 2010 Y axis shown is not TPS. Part throttle map does not mean it is TPS based. It only means that engine is not in idle or WOT condition. Tip? Find a good Vipec tuner. Quote Link to comment Share on other sites More sharing options...
Guest |695| Posted December 31, 2010 Report Share Posted December 31, 2010 I do have a great tuner that will sort the car out, was just wanting to get the car running and some basic tuning done before I send the car over to him. Thanks for the help.... Quote Link to comment Share on other sites More sharing options...
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