justinc7100

Have an 09 g37x. Was looking at the rpms today and I noticed that as I am cruising then stomp on the gas, I notice somtimes the rpms drop a little (maybe like 100) before shooting up normally. Is this normal? Could it he downshifting and I am just crazy? Thank you.

llebcire

My 2011 G37x does the same thing - can be annoying, almost like a stutter. I'll do the grounding kit in a few months to see if there's actually a difference, however the car seems to do this when I've been driving gently. On a day where my driving is more "spirited", doesn't seem to be as much of an issue. 7AT in these years have some logic and programming opportunities for normal driving.

-Eric

justinc7100

Thank you for the reply. Yeah this transmission is annoying if you have a habit of overthinking things lol. I honestly do not mind this, I just want to make sure somthing is not going wrong like my torque converter. I will be at the dealer tomorrow and will ask them.

slartibartfast

iTrader: (7)

The 7AT is programmed to hold the highest reasonable gear for as long as it can for fuel economy. You might see a slight rpm drop as torque falls off briefly when you whack the throttle open. It's why I installed a catback and began shifting manually.

Джон

Get an ecutek tune. Sébastien at specialty z is etuning my 7at and engine. The tune isn't complete yet but the way he changes the programming on the 7at makes it shift much better* much faster* Well worth it

Dzionassi

He cant change transmission shift limits, shift points, just shift "firmness"...