Quote:
Originally Posted by SouthArk370Z
I'd try the following:
1) Clean MAFs (very easy job). If that doesn't improve things...
2) Clean the throttle bodies (not as easy as MAFs, but most weekend mechanics can handle it).
You might want to go back to a stock tune and see if problem still exists. If stock tune doesn't improve things, you need to start looking for bad parts, wiring, &c.
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Thanks SouthArk. Took your advice and cleaned the MAF sensors. Really easy job as you said. They seemed pretty clean, maybe a very thin sheen of oil on them, probably from my old Gruppe-M intakes.
I cleaned them thoroughly with CRC MAF sensor cleaner. Haven't noticed a difference after a very short drive which I logged with Nissan Datascan 3 again. Will go for a longer drive tomorrow
I'll look into the throttle bodies next. I heard they are easy to damage so I might get a professional to do it
Should mention the slow response also existed on the stock tune