simbey1982 Posted November 25, 2005 Share Posted November 25, 2005 Hello all, More engine swap woes, apparently my engine i swapped in has a MAF. it has a plug on the left side of the engine that i couldnt figure out until i hooked up a MAF,,,but the ECU i have has no Signal for a MAF so i think i need to find the right ECU for the engine. Is there any way i could easily verify exactly what the engine is from so i could match the ECU to it and rewire??? Any suggestions and ideas of when subaru went from a MAF system to a MAP system and if it was across the board? Cory Quote Link to comment Share on other sites More sharing options...
simbey1982 Posted November 25, 2005 Author Share Posted November 25, 2005 Bump for some much needed help Quote Link to comment Share on other sites More sharing options...
friendly_jacek Posted November 25, 2005 Share Posted November 25, 2005 Cant you put a MAP sensor in in the manifold? MAP is less precise but more reliable. Accordint to the following site the switch over happened in 1999/2000: http://www.cobbtuning.com/tech/airflow/index.html Quote Link to comment Share on other sites More sharing options...
simbey1982 Posted November 26, 2005 Author Share Posted November 26, 2005 how would i do that?? swap the throttle body?? Cory Quote Link to comment Share on other sites More sharing options...
NoahDL88 Posted November 26, 2005 Share Posted November 26, 2005 I don't think you can swap map to maf, unless you swap all the sensors, wiring and computer. if the donor engine is complete enough, you should be able to tell, map engines did not have maf's and they had the big box air filter behind the engine, the maf's had the filter before the MAF, near the fender on the passenger side. Quote Link to comment Share on other sites More sharing options...
simbey1982 Posted November 26, 2005 Author Share Posted November 26, 2005 Well i basically got a Long block...so i know how to tell from the air piping but the engine didnt come with any i had to buy it, but im pretty sure its a MAF system...anyother tell tale signs.. Cory Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted November 27, 2005 Share Posted November 27, 2005 Cory, I don't think the long block really cares whether it has a MAP or MAF. Just hook all the stuff up from your engine, sensors, intake, etc and let 'er rip. Quote Link to comment Share on other sites More sharing options...
simbey1982 Posted November 27, 2005 Author Share Posted November 27, 2005 Yeah thats what i thought...but the connectors for the MAF and other parts, are on the engine harness, they are NOT part of the BulkHead harness like my other one is...so this means it ties right into the engine wiring going to the ECU...so it seems the easiest way is to find a MAF ECU...what do you think COry Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted November 27, 2005 Share Posted November 27, 2005 I guess I'm confused as to what you're doing? The car that you are swapping the engine into, is it MAF or MAP based? Does it have all the wiring and associated parts with it? The engine you have, is it MAF or MAP based? It shouldn't matter....just swap over all the sensors and that jazz from your old engine. Quote Link to comment Share on other sites More sharing options...
simbey1982 Posted November 29, 2005 Author Share Posted November 29, 2005 Well here is the deal...old car 97 impreza engine and ECU are gone and out. New engine 2000? 2.5 litre SOHC w/ ECU ( i think its the wrong one cuz when i was splicing it into the existing harness there were no pins on the ECU for the MAF........yet on the engine harness there is a place for a maf??? Cory Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted December 2, 2005 Share Posted December 2, 2005 In 2000 subaru switched to a MAP based setup. http://www.cobbtuning.com/tech/airflow/ I would personally try and find a 99 ECU so you can use the existing car wiring setup for the MAF system. Quote Link to comment Share on other sites More sharing options...
simbey1982 Posted December 4, 2005 Author Share Posted December 4, 2005 Its really odd the engine connectors Mate up to the ECU wiring with no problem its just the ECU if for a MAP system and as far as i can tell the engine is MAF because there is no AirAssist Solenoid Valve and there is a connector for a MAF...anyone know of any way to tell exactly what the engine came from and what year?? Thanks Cory Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted December 5, 2005 Share Posted December 5, 2005 Cory, Like I said, it really doesn't matter too much about the engine, as long as you have the correct sensors. The intake manifold would have most of the sensors on it. Quote Link to comment Share on other sites More sharing options...
simbey1982 Posted December 7, 2005 Author Share Posted December 7, 2005 The easiest thing for me to do, is to take the current ECU back to the guy i bought it from and switch him...i just need a surefire way of knowing what i need.... Cory Quote Link to comment Share on other sites More sharing options...
Legacy777 Posted December 8, 2005 Share Posted December 8, 2005 If the car chassis is MAF based, and you have all the sensors for the MAF system, I would try and get a MAF based ECU. Quote Link to comment Share on other sites More sharing options...
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