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Discussion Starter #1
Hello everone


Recently, I bought a used E12 Note with the Digi-s ( supercharged 1.2) engine.


I have noticed when driving with the super charger OFF at approximately 3000 rpm ( foot steady on the pedal) the car seems to "hold back" and then accelerates continuously ( the speed cycles 3100 - 2800 rpm).


When the supercharger is ON and accelerating on higher speeds (>100KM) the car feels restrictive as mentioned earlier ("hold back" and then accelerates continuously).


I Installed New Air filter, cleaned the MAF sensor and did a diagnostic scan and NO error codes were found.


Can anyone advise as to what may be causing this?
 

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Hello everone


Recently, I bought a used E12 Note with the Digi-s ( supercharged 1.2) engine.


I have noticed when driving with the super charger OFF at approximately 3000 rpm ( foot steady on the pedal) the car seems to "hold back" and then accelerates continuously ( the speed cycles 3100 - 2800 rpm).


When the supercharger is ON and accelerating on higher speeds (>100KM) the car feels restrictive as mentioned earlier ("hold back" and then accelerates continuously).


I Installed New Air filter, cleaned the MAF sensor and did a diagnostic scan and NO error codes were found.


Can anyone advise as to what may be causing this?
As you will probably guess our Note had the DIG-S engine and it did not have any of the issues you are finding. As far as I am aware the supercharger is ON all the time, its belt driven after all and does not depend on exhaust gas speed like a turbo.

Suggest you get it to a Nissan dealer and get the codes read ASAP.
 

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Hello everone


Recently, I bought a used E12 Note with the Digi-s ( supercharged 1.2) engine.


I have noticed when driving with the super charger OFF at approximately 3000 rpm ( foot steady on the pedal) the car seems to "hold back" and then accelerates continuously ( the speed cycles 3100 - 2800 rpm).


When the supercharger is ON and accelerating on higher speeds (>100KM) the car feels restrictive as mentioned earlier ("hold back" and then accelerates continuously).


I Installed New Air filter, cleaned the MAF sensor and did a diagnostic scan and NO error codes were found.


Can anyone advise as to what may be causing this?
I assume you either no longer have this issue or moved on with life, but the issue you think you may have seems to be a natural phenomenon with drive by wire cars.
 

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2014 E12 DIG-S Manual
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I am curious about how you disable the supercharger. Is it done by enabling ECO mode?

@DIG-S Nissan did mention supercharger is auto enabled/disabled by ECU, and more aggressively in ECO mode.
HR12DDR Engine
 

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I am curious about how you disable the supercharger. Is it done by enabling ECO mode?

@DIG-S Nissan did mention supercharger is auto enabled/disabled by ECU, and more aggressively in ECO mode.
HR12DDR Engine
The supercharger is always on but disengaged by a magnetic clutch. Also the bypass valve routes the air differently while in ECO mode.
 

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Discussion Starter #6
As you will probably guess our Note had the DIG-S engine and it did not have any of the issues you are finding. As far as I am aware the supercharger is ON all the time, its belt driven after all and does not depend on exhaust gas speed like a turbo.

Suggest you get it to a Nissan dealer and get the codes read ASAP.

Sorry for the late reply.
I got the issue resolved.
Seems that it was carbon deposits on either the injectors or the intake manifold.
Solution: SEAFOAM ( tried lucas and BG44K but SEAFOAM worked the best)
poured 1 bottle + into the tank after I sprayed some into the intake manifold and PROBLEM SOLVED.
To verify, after a month, I took off the intake manifold and did an inspection, it was clean.
The car runs SWEEEET.

Thanks for the advice Guys.
 

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2014 E12 DIG-S Manual
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DIG in DIG-S is shorted for direct injection gasoline system - which is infamous for causing carbon build-up on intake valves.
I wonder if any one have looked through the intake holes to see if there is excessive carbon build-up on intake valves?
 

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Hello everone


Recently, I bought a used E12 Note with the Digi-s ( supercharged 1.2) engine.


I have noticed when driving with the super charger OFF at approximately 3000 rpm ( foot steady on the pedal) the car seems to "hold back" and then accelerates continuously ( the speed cycles 3100 - 2800 rpm).


When the supercharger is ON and accelerating on higher speeds (>100KM) the car feels restrictive as mentioned earlier ("hold back" and then accelerates continuously).


I Installed New Air filter, cleaned the MAF sensor and did a diagnostic scan and NO error codes were found.


Can anyone advise as to what may be causing this?
Hello, once the car in in eco mode you will get that restrictive feeling. Simply press the eco button and you can feel the difference in power.
 
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