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Originally Posted by Blindedlegacy
btw, you never get answer my question about the ecu, which one can i put in my car?
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Originally Posted by cre
The ECUs are a little different, but for your purposes it should work without modification... I can't recall but I'm pretty sure that at the worst you'll get an error code stored in the ECU for the ECT.
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Unless I'm completely wrong, the alternator is not controlled by the ecu. It has an internal voltage regulator in the alternator. Also, the voltage you reported at idle is too low, it should still be 13.5 volts. As engine speed changes the available current will change as well, however the voltage should remain constant if the wiring and alternator are both working properly.
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1989 7MGTE R154 Targa Top White Package w/Blue Interior
Driftmotion 57trim CT26, Upgraded Intercooler, 2.25" Hard Pipes, 3" Turbo Back Exhaust with Test Pipe, HKS VPC w/GM 3 bar MAP sensor, APEXi S-AFC, Walbro 255lph fuel pump, ProSport EVO Series Boost / Fuel Pressure / AFR gauges, Lotek a Pillar Gauge Pod, HKS Type 0 Turbo Timer, Eibach Lowering Springs, Tokico Illumina II TEMS struts, custom powder coated Motegi Racing TrakLite wheels
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