Ugh, no IAT and someone is coming to help tune..
#1
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Ugh, no IAT and someone is coming to help tune..
Ok, I've had this "NeoBrainSquirt" piggyback ecu waiting to go in since January. I have so little time right now and my first attempt (I am dumb) ended in a burnt ignitor, so I waited until after my big track weekend (didn't want to take any chances, car was still awesome with fmu) to try again.
I loaded it with the mspnp basemap, changed the injectors to 460cc, and fired it up. Cold start cranking was not impressive but after it fired, it ran well. But I am not getting any readings for Manifold intake temperature!? I checked all of the connections and my IAT has resistance, but nothing. It worked the last time I hooked MS up, so I am not sure what is different.
Any ideas?
I loaded it with the mspnp basemap, changed the injectors to 460cc, and fired it up. Cold start cranking was not impressive but after it fired, it ran well. But I am not getting any readings for Manifold intake temperature!? I checked all of the connections and my IAT has resistance, but nothing. It worked the last time I hooked MS up, so I am not sure what is different.
Any ideas?
#10
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I also plugged in my old bipes (except CAS wires, of course), set it to air temp, and while it gave a reading, it didn't change when I unplugged the IAT from the AFM harness. I know, not helpful.
#14
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The guy that was coming over has to drive two states away tonight to work on some car. Gives me another day.
#16
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The AFM plug shows 5V across them. If the harness connection was bad, wouldn't I have gotten a CEL before MS? Which plug on the AFM corresponds to the orange wire on the MS?
Also, is there Accel enrichment numbers for 460cc 1.6 anywhere I can start with?
Sorry but I really want to understand how this is setup so I can do it right. Being stupid just makes it take so dang long.
Also, is there Accel enrichment numbers for 460cc 1.6 anywhere I can start with?
Sorry but I really want to understand how this is setup so I can do it right. Being stupid just makes it take so dang long.
#17
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you're worried about accel enrichments when you have not IAT reading? that will affect your fueling more.
Just run new wiring from the MS to the IAT sensor. It's one wire. The other pin on the sensor goes to ground. Might as well rule out factory wiring. That will require you to reflash your easytherm values to a standalone resistor bias value or 2490 on the IAT.
Just run new wiring from the MS to the IAT sensor. It's one wire. The other pin on the sensor goes to ground. Might as well rule out factory wiring. That will require you to reflash your easytherm values to a standalone resistor bias value or 2490 on the IAT.
#20
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Accel not related, don't worry. I could scale them for my 460s, but I don't want to screw that up too.
So the factory ECU outputs the 5V and gets its reading based on the current draw?
So the factory ECU outputs the 5V and gets its reading based on the current draw?