theakerstwo Posted January 20, 2019 Share Posted January 20, 2019 I heed some one to lend me their vin# so I can order a ECU for mine.It needs to be a 97 year with a 427engine and its a VMAC2.And reason for this is I am up grading HP from a 330/350.Piston have been changed and iinjectors plus turbo.Thanks if you can help me. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/55359-ch-vin/ Share on other sites More sharing options...
Mackpro Posted January 20, 2019 Share Posted January 20, 2019 The VMAC 1 and 2 ECMs are getting hard to get from Mack. The part number of the ECM has nothing to do with the HP rating. A 300 HP engine and a 427 HP engine can have the same part number ECM. Also if you do get a new/Reman ECM from Mack it will be blank with the basic program in it, usually 250HP. Dealership has to program it to a specific VIN , that’s where you get the HP rating. Hopefully Mack Corprate still has a guy to set up the VMAC 1and 2 software for the dealership. A couple years back I tried to do a HP upgrade on a VMAC 2 and Mack corprate had only one guy that knew how to do the older VMACs. He was on a 2 week vacation and I had to wait. As of 3 months ago the VMAC 3’s are still good to go on ECMs and software/HP upgrades. Quote Link to comment https://www.bigmacktrucks.com/topic/55359-ch-vin/#findComment-413669 Share on other sites More sharing options...
theakerstwo Posted January 20, 2019 Author Share Posted January 20, 2019 Thanks for the info I may be better off trying to get one of the ecm tuners to up rate it.There is a few in tex. that have websites I can call and ask. Quote glenn akers Link to comment https://www.bigmacktrucks.com/topic/55359-ch-vin/#findComment-413675 Share on other sites More sharing options...
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