Is there anything I can do to improve throttle response without tuning?

 

Clean your throttle bodies, helps ALOT

https://www.myg37.com/forums/d-i-y-i...le-bodies.html

 

try an ECU reset. might help. search for the DIY on here, easy to do.

 

MT or AT?

 

Auto trans....

 

Get standard light weight pulley from stillen. I have 6MT and I notice big difference but I'm also tuned. It should help on AT a little bit. Also get grounding kits that should help a bit.

 

I cleaned the throttle bodies and added a grounding kit and it changed things dramatically

 

https://www.myg37.com/forums/engine-...on-suit-5.html

Lol

 

+1 on the grounding kit. made a very noticeable differance in shifting.

I also got a hypertech tuner from a member on here after the grounding kit which helped with throttle response also. I only have cataback exhaust and drop in afe filters.

 

OP, have you had the ITB12-027 7AT fix yet? Scope out the forum TSB section.

Before I had the upgrade, my ride was a dog off of the line – severe throttle lag and it had slow response when I punched it.

Since, it is like driving another car.

 

I just got my car back from routine maintenance and they did a ECM update and reset my TCM. It drives like a new car.... much better than the Q50 they gave for me to drive.

 

Did the ground wire and throttle body cleaning. No improvement what so ever. Got an appointment with the stealer in a few days. Lets see how bad I get @ss raped!!!