Well I've had my 2010 G37S for almost and year now and just found this forum. I've modded many cars in the past but really don't think this one needs much. Having said that is there anything we can do to get rid of the annoying throttle lag? My car is still under warranty and I've been to the dealer to address this. They said it's how the 7 speed auto trans shifts. They said they did a computer upgrade for the trans but I can't feel a difference. If anything it's a little worse. Rough shifts up and down and lag through out. Also has anyone just added lowering springs to the front end to get rid of the 4x4 look? The back is pretty low but the front is way up there. I was wondering if just adding eibachs to the front would give a horrible ride. Thanks for any tips or suggestions.

 

Welcome to the site Jack.
Not much else can be done regarding the 7AT, it will shift more aggressively if you keep the rpms up on average but that won't help your mpgs. If your dealer verified that the latest reflash/TSB has been applied about all you can try is a grounding kit, the reviews aren't consistent but many have reported improved shifting performance, might be worth a look.
As far as just lowering the front, here's a thread on that~
Enjoy your G!
Brad
https://www.myg37.com/forums/g37-cou...the-front.html