The throttle is too laggy or the engine isn't as eager to rev, and this makes it difficult to blip the throttle. It was easy with the 350Z. With the 370Z, it's like I have to briefly floor it just to get it to rev a decent amount... overall, too slow.
A couple of things to notice when I had this issue was that the car was slow to up rev when I up shift. Depress the clutch pedal and upshift without releasing it, and you can see the delay before the up rev. The issue I felt was that there were times it was either too late or it didn't up rev at all, which threw me off. Maybe my RPMs were too low, but higher RPMs seem to help a bit.
I just had a new belt put in yesterday, so I've not notice much issues. The last belt started to fray at the threads. So far I haven't noticed it, but I've not tested the A/C either.
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