Strokermjcomanche Posted October 16, 2019 Share Posted October 16, 2019 Anyone have knowledge of exactly what this improves or what else has to be done to compliment this Ecu ? Thanks in advance Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 16, 2019 Share Posted October 16, 2019 I have no idea how you get such a number but Chrysler shows it as unpriced and not available. Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 16, 2019 Share Posted October 16, 2019 If it’s cheap I say snag it and possibly we could reverse engineer it maybe and see what makes it so special. Ok. Maybe that’s too optimistic. But I know performance parts from that era are rare as Chrysler did not advertise that stuff very well Link to comment Share on other sites More sharing options...
WahooSteeler Posted October 16, 2019 Share Posted October 16, 2019 Need Cruiser to chime in........ Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 16, 2019 Share Posted October 16, 2019 I may have to call MoPar performance specifier and see what it does if cruiser has nothin. Or if someone has an old performance catalogue. Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted October 16, 2019 Author Share Posted October 16, 2019 2 hours ago, eaglescout526 said: I have no idea how you get such a number but Chrysler shows it as unpriced and not available. I already bought it and it's on its way so that stuff is out of the way lol . Just putting the cat before the horse and seeing what it's all about . My truck goes in storage November 1st so this won't be installed until spring sometime . Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted October 16, 2019 Author Share Posted October 16, 2019 2 hours ago, WahooSteeler said: Need Cruiser to chime in........ I googled the part number and seen where Cruiser chimed in on a thread , he referred to using premium fuel and possible timing differences iirc. I'm really looking for someone that has had firsthand experience if at all possible, iirc I don't think Cruiser had one ... Link to comment Share on other sites More sharing options...
Strokermjcomanche Posted October 16, 2019 Author Share Posted October 16, 2019 1 hour ago, eaglescout526 said: I may have to call MoPar performance specifier and see what it does if cruiser has nothin. Or if someone has an old performance catalogue. That would be awesome!! Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 16, 2019 Share Posted October 16, 2019 8 minutes ago, Strokermjcomanche said: That would be awesome!! Think I’m gonna go buy an old performance catalogue and see if it is in there. I’ll try specifier tomorrow. My assistant manager told me that they may not be able to pull up any info on it since it is old. Link to comment Share on other sites More sharing options...
Green Mesa XJ Posted October 17, 2019 Share Posted October 17, 2019 I thought the answer would Chrysler repackaged the 1990 ecu to clear out old 1990 stock but if cruiser said timed differently it has to be a one off Jeep offered as the new HO 4.0 rolled out. I’m curious what it will do. The old renix computers can sometime be picked up cheap, well for one they sat on a shelf for 20 years and the other is some sellers read bendix and assume it’s for the abs Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
Warren Mohler Posted October 17, 2019 Share Posted October 17, 2019 5 hours ago, Strokermjcomanche said: Anyone have knowledge of exactly what this improves or what else has to be done to compliment this Ecu ? Thanks in advance My mopar performance book for Jeep engines says part #P4529334 is for 4.0L 87-90 provides increased fuel flow and more spark advance at heavy throttle part # may have been superseded book part #P5249586 Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 17, 2019 Share Posted October 17, 2019 6 minutes ago, Warren Mohler said: My mopar performance book for Jeep engines says part #P4529334 is for 4.0L 87-90 provides increased fuel flow and more spark advance at heavy throttle part # may have been superseded book part #P5249586 What year is your catalogue? Chrysler shows that your part number does not supersede to what Stroker has just picked up. But that's neat info. Saves me a phone call tomorrow. Link to comment Share on other sites More sharing options...
desertmike Posted October 17, 2019 Share Posted October 17, 2019 I read an article in a 4WD magazine back in the late 80's about a performance ecu for the jeep 4.0. It was supposed to increase fuel and timing and other things for more performance. Went to the Jeep dealer and they had one but it was over $400 at the time. Don't remember the p/n but could be the one above. Link to comment Share on other sites More sharing options...
Warren Mohler Posted October 17, 2019 Share Posted October 17, 2019 1 minute ago, eaglescout526 said: What year is your catalogue? not a cat. this is mopar book on building jeep engines titled JEEP ENGINES speed secrets & racing modifications for jeep-built 4,6,&V8 engines bought it at the dealership I worked at mid 1990s Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 17, 2019 Share Posted October 17, 2019 1 minute ago, Warren Mohler said: not a cat. this is mopar book on building jeep engines titled JEEP ENGINES speed secrets & racing modifications for jeep-built 4,6,&V8 engines bought it at the dealership I worked at mid 1990s Neat. Hang on to that, also post a picture of the cover in the literature section. Link to comment Share on other sites More sharing options...
Warren Mohler Posted October 17, 2019 Share Posted October 17, 2019 1 minute ago, eaglescout526 said: Neat. Hang on to that, also post a picture of the cover in the literature section. haven't figured out how to do that yet looked all over forum and can't find instructions I'm an old fart slow to learn this stuff just got first cell phone last year Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 17, 2019 Share Posted October 17, 2019 1 minute ago, Warren Mohler said: haven't figured out how to do that yet looked all over forum and can't find instructions I'm an old fart slow to learn this stuff just got first cell phone last year You'll get it. Its pinned in the pub. Link to comment Share on other sites More sharing options...
Warren Mohler Posted October 17, 2019 Share Posted October 17, 2019 1 minute ago, eaglescout526 said: You'll get it. Its pinned in the pub. I will look for it thanks Link to comment Share on other sites More sharing options...
eaglescout526 Posted October 17, 2019 Share Posted October 17, 2019 I got to thinking about the specs on this ECU. Anyone think a 4.0 stroker benefit from this ECU? I’m thinking it would. Link to comment Share on other sites More sharing options...
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