throttle lift off lag

semtex

It's the heavy flywheel. More mass = more rotational inertia. That's why lightweight flywheels are a somewhat popular mod for Zs. The 350 was the same way. Nissan chose a heavy flywheel out of noise considerations.

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"There are no small accidents on this circuit." -- Ayrton Senna
316.8whp & 248 ft/lbs (Dyno Dynamics) | 319whp & 256 ft/lbs (DynoJet) (04/23/10)
Stillen G3 CAI, CBE, Pulley / F.I. LTH / GTSpec Ladder Brace / Setrab Oil Cooler / UpRev-tuned by Forged Perf.

rufio11

Does Nissan use a DBW or is it a Cable? DBW lag sucks ballz

Pharmacist

wire. i agree it could be dbw lag. also the part about buring off the remaining fuel does seem to make sense. i highly doubt the heavy flywheel is the cause. a heavy flywheel would mean a slow rev down. what i notice is more that the engine rpm stays put without slowing down at all for about half a second or so, before beginning to slow down. the lag also seems to be independent of rpm. it's about the same duration whether at high or low rpm. if it was the flywheel, there would be more lag at high rpm and less at low rpm.

for those who say srm, no, actually the car doesn't even have to be in gear or even moving for this to happen. just try this. leave the car in neutral. push the throttle and hold the engine at a constant rpm, doesn't matter high or low. keep your eye on the tachometer needle, and immediately lift off completely. you should notice a small delay between the moment the throttle pedal is lifted and the moment the needle begins to drop.

also can someone with the automatic also try it just to see if it is indeed the flywheel or the electric throttle

370Zsteve

Wow, Nissan did something to quiet the noisy engine? Pity they didn't do more.....................

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SOLD MY Z MARCH 2018 - another Core OG moves on - new ride 2019 Z Corvette Grand Sport - no mods necessary but already have eyes on HFC and intakes LOL IT NEVER ENDS.

elmz

Yep this was one of the first things I noticed when I first got my 350. I think its by design. The reason I say that is because in all my previous cars, if I was rolling on 1st gear and then dropped the pedal it would jerk back and forth. But in the 350 you could roll in any range of 1st and drop the pedal and experience little o no jerking. I think it was designed to allow for a smoother ride when dropping the gas pedal at high rpms.