obviously the car is not in gear, or if its in gear the clutch is disengaged and srm is off. yeah it does seem like circuitry lag due to the electric throttle. all my previous cars had mechanical throttle cables, and throttle response was definitely much more immediate both in opening and closing the throttle

My other car does the slow Rpm drop. In researching, it was for emmission purposes.
The unit is called a decel-valve.


Disclaimer: this may not apply to our Zs

I've wondered if this does anything to help:

Sprint Booster USA - MT

Seems like it just increases throttle sensitivity on acceleration. No one online really comments on how it would address the issue in this thread. I may go locally and try one out as a demo (offered on their website)

I doubt its circuitry lag - maybe a delay built into the software but not a hardware delay.... these ECU's are very capable.

:iagree:

I notice it as well. If there is a delay, it is programmed for a reason. Electronics are as fast as a cable.

That's a popular mod over at MB World. The throttle on the V8 Mercedes are tuned for seniors, so you have to push the pedal 50% to get maybe 15% throttle. :icon17:

Wow, Nissan did something to quiet the noisy engine? Pity they didn't do more.....................:icon17:

Agreed. Unless this 'alleged' issue is hard coded into the circuitry. I tried this on my car and could not replicate.

If your car is not in gear when you lift off the throttle, then I stand by my belief that it's related to the high-mass flywheel. The fact that it hangs for a second before it drops is consistent with what I'd expect from a flywheel with a lot of rotational inertia. But hey, who knows for sure, right? Heck, maybe it's not just one factor. Maybe it's a combination of factors (i.e., heavy flywheel combined with DBW).

Still waiting for someone to comment on the Sprint Boost thing...

Huh?

7AT does it too - when I brought my Z home, I nearly launched it through my garage, as I was carefully/slowly pulling in, and got "stuck" on the 1.5" bump where my garage door sill is.

I blipped the throttle, the BOLTED forward, I slammed on the brakes, and managed to not park my Z in my second bathroom.

Ditto... I think it's a feature of some sort as I have noticed this behavior test driving the 7AT. The 350Z didn't do that, so it shouldn't have anything to do with the flywheel holding the revs.

My other car does it too... Especially the one with ULEV. I don't think it has to do with the flywheel. throttle just hangs momentarily to burn off fuel.

Once you get use to it though you'll learn to time urself for the shift and it won't bother you. Since my other car hangs worse (and is a MT) the Z never bothered me at all. :p

If the 7AT does this as well, then I agree that it's most likely an electronic 'feature'.