ive had my car (06 vq35de 350z 6mt base model no mods) for about 3 weeks and do not know the normal sounds of these cars. its under warranty so no need to rush it anywhere, here are my issues;

when i start my car up after leaving it parked all night it has very high rpms and oil pressure when at idle in neutral or in gear. is it normal to have a high idle for the first 5-7 minutes when cold?

also when it first starts up for those first 5 mins the car has an airy sputtering noise at all rpms then goes away when the car is warmed up. sounds like a "sip sip sip sip" slightly over the normal engine sound.

last issue is when the car is warm the oil pressure is very low like barely above 0, i have full oil and its faily new. what scares me is when i am in neutral and i rev to 1500 and then let it go back to idle the idle is very rough for a second and is very rough sounding when shutting the engine off like it just dies and goes vrah vraaah kluhg.

is this normal for the z or should i take it in for a tune and fluid change? any comments on whats going on would be greatly appreciated.

 

everything you mentioned sounds perfectly normal except the rev then sputter and rough idle part.. use the search function here or on google for technsquare 350z ecu reset and do that.. if theres still rough idle, you ahve a vacuumleak somewhere, probably jsut a hose, but it is easy for a nissan mechanic to spot it.. find your local shop and og make friends w someone there.. you should do that anyways.

 

Cold and warm idle speeds and in the factory manual.

Proper oil pressure is also listed. Very information. Get one online for free.