I've notice over the past couple of month that my G is losing it's UMPHH. It feels as though it has loss some power. Most noticeable is the loss of sound in the exhaust note. It doesn't roar like it use to. What could be the culprit of this issue? My car is an '06 with 37k miles on it. What would you guys suggest? Fuel service? Tune up? Any suggestions?

 

A TT would give it a little more umphh as you put it

 

Air leaks in the exhaust? Maybe a blown gasket

 

I'm not sure what the problem is. It might be my conservative driving habits that the ECU picked up. I'm going the try to reset the ECU and see what happens. After that, oil change, new air filter, and hope for the best.

 

I dont think that year had the algorithms ECU... id get it check for air leaks as Tian mentioned.. or it could be your airflow sensor.. had that before after a service and it wasn't put back properly..

 

Airflow sensor could affect the performance? I will get the car checked for air leaks as well.