VVTuner with hotside mp62
07-31-2011, 11:05 AM
#23
But changing the ECU on the 01+ means fiddling with the keys/immo IIRC (or this might just be FUD).
But you can still get into the problem of the ECU freaking out since it doesn't anticipate that the signal from the Cam sensor should move in relation to the Crank (does a nonVVT NB start/run with the intake cam advanced two teeth?).
If you could move the cam sensor to read a nub on the exhaust cam wheel (as on the MSM and 99-00, but they use the intake cam wheel) you might be in a better shape. But where and how to make sure you place it at the correct degrees in relation to the crank is another matter.
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07-31-2011, 11:24 AM
#24
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Did you have and did you use A/C? My idle was "almost" rock solid too...until I applied loads. A/C, high beams, rear defroster. It was absolutely fine as long as I was using it in a fuel-only mode. As soon as I took control of the ignition, boooo.
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07-31-2011, 12:28 PM
#25
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It looks like the harness is near identical. The yellow on 4D is part of the OCV (together with the Violet/Yellow at 4R) with VVT and the signal to the Wastegate control on the MSM.
But changing the ECU on the 01+ means fiddling with the keys/immo IIRC (or this might just be FUD).
But you can still get into the problem of the ECU freaking out since it doesn't anticipate that the signal from the Cam sensor should move in relation to the Crank (does a nonVVT NB start/run with the intake cam advanced two teeth?).
If you could move the cam sensor to read a nub on the exhaust cam wheel (as on the MSM and 99-00, but they use the intake cam wheel) you might be in a better shape. But where and how to make sure you place it at the correct degrees in relation to the crank is another matter.
But changing the ECU on the 01+ means fiddling with the keys/immo IIRC (or this might just be FUD).
But you can still get into the problem of the ECU freaking out since it doesn't anticipate that the signal from the Cam sensor should move in relation to the Crank (does a nonVVT NB start/run with the intake cam advanced two teeth?).
If you could move the cam sensor to read a nub on the exhaust cam wheel (as on the MSM and 99-00, but they use the intake cam wheel) you might be in a better shape. But where and how to make sure you place it at the correct degrees in relation to the crank is another matter.
How about this one....the cam rotates two times per crank revolution. Could a device be made to take the crank signal and output a signal twice for every input crank signal? This device would have to be timed to deliver output signals at full retard. In full retard (ocv disconnected), the oem ecu does not freak out. DIY, are you reading this?
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07-31-2011, 12:31 PM
#26
But you can still get into the problem of the ECU freaking out since it doesn't anticipate that the signal from the Cam sensor should move in relation to the Crank (does a nonVVT NB start/run with the intake cam advanced two teeth?).
If you could move the cam sensor to read a nub on the exhaust cam wheel (as on the MSM and 99-00, but they use the intake cam wheel) you might be in a better shape. But where and how to make sure you place it at the correct degrees in relation to the crank is another matter.
If you could move the cam sensor to read a nub on the exhaust cam wheel (as on the MSM and 99-00, but they use the intake cam wheel) you might be in a better shape. But where and how to make sure you place it at the correct degrees in relation to the crank is another matter.
I came to think that it would be much smarter if the signals coming from the VVTuner was phased to look like cam advanced zero degrees, otherwise the simulated NA CAS signals would look strange too (e.g. at 40 degrees advance).
Disregard as much of the above as you want
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07-31-2011, 05:30 PM
#28
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I don't think that would work either or if it did the engine would run rough. I did some reading on cam sensors. I assume the oem ecu needs the correct cam angle so it can match it with the correct injection angle?
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08-02-2011, 08:37 AM
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Those that running full standalones (brand doesn't matter as long as it controls vvt)...... are you able to change the injector angle? Just curious if the vvt range is enough that could cause fuel pooling in the IM by not changing the injector angle to match cam angle.
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