I have put about 800 miles or so on my G35 Sedan (premium/aero/sport) and the car does not feel like it has as much pick up as the one I test drove initially. At first I thought it was a function of me breaking in the car. I have kept it under 4000 RPM with the occasional spike to 5000 when merging. Tonight for a test I gave it some gas for real and took it up around 6500 RPM. The acceleration is just not where I expected it to be. The one I test drove pinned me in my seat under similar circumstances. I am going to call the service department here in Orlando. How should I describe my problem so that it doesn't sound like I am being picky. Without any hard numbers I can imagine a case where they tell me it is all in my head after the mechanic does a cursory inspection and deems it to be fine.

Thanks in advance.

Get it past the 1200 marker for breakin, then drive it aggressively for a few days or do the ECU Reset thing you see posted in a few threads here. The ECU is adaptive, and tends to get a little sluggish if you drive like a granny for too long. If it's still sluggish, then definately check with your service department.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

Just wait until you hit 3k, it is like night and day. After your first oil change you will notice a huge difference.

Now that I think about it, I do recall thinking it felt a little sluggish about halfway through breakin up past the first oil change.

It runs like a bat out of hell now, though (7200 miles now, though it's been running strong for months).. and I've never reset the ECU.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter

sideburns,
what kind of gas are u using...i notice if I use cheap gas..you loose alot of your power...only user 76 or chevron premium..they are the best..

Mine felt sluggish too, until I tried the Easy ECU Reset procedure. Very responsive now, no more sluggishness. After doing the reset, the change in performance was immediately noticed.

macman246
2003.5 G35 Sedan / Brilliant Silver / Graphite / Premium Pkg

this probably isnt entirely the problem...but assuming that u live in florida, the weather is pretty hot and humid. If you testdrove the car at the dealership on a cool morning or at night, that g would feel quicker then the one you have now. It probably is more related to break-in though.