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#1 |
![]() Join Date: Jun 2013
Location: PA
Posts: 879
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So I finally contacted DIYautotune about putting the ECU I purchased for my 1991 engine on my 1990. It never ran my 1991 well, while the factory ECU ran it fine.
To swap between 1991+ and 1990, I just had to open the ECU, remove a soldered in jumper, add a diode, and add 4 others jumpers (3 for the proper power key mode). After the modifications, I threw it on, and it ran the car fine. Which means that there is something wrong with the 1991 sensors or wiring that the factory ECU compensated for in open loop mode that the megasquirt couldn't deal with. I'm going to do some more investigation to see what actual issue caused the problem. But it's also good to know that the ECU is swappable with minor modifications. Last edited by spork2367; 05-21-2019 at 02:12 PM. |
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#2 |
![]() Join Date: Feb 2011
Location: Clayton, North Carolina
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That sounds great. What is the cost of the megasquirt ECU?
Sent from my iPhone using ZR-1 Net Registry
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#3 | |
![]() Join Date: Jun 2013
Location: PA
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#4 |
Join Date: May 2007
Location: Chicagoland, IL
Posts: 9,697
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So u modded the MS unit, not the OEM ECM, correct?
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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#5 |
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#6 |
Join Date: May 2007
Location: Chicagoland, IL
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Right. Reading ur post I wasn’t sure.
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[SIGPIC][/SIGPIC]Former Membership Chairman Former ZR-1 Registry - BOD 1972 Corvette 4speed base Coupe SOLD long time ago 1984 Corvette Z-51/4+3 SOLD 1992 Corvette ZR-1 Aqua/Gray #474 SOLD 1992 Corvette ZR-1 Black Rose/Cognac #458 2014 Honda VFR Interceptor DX |
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