Well i just changed the front 02 sensor because of the p0134 code and now my car is still running slow and eating gas and now its throwing the p0172 code.I'm told its prolly a boost leak but how do i find out where the boost leak is.Someone please help

 

someone help

 

Heres what you need for a boost leak test
http://www.vfaq.com/mods/ICtester.html

 

mine throwin both codes but im still puttin down all my power and my idle is bad as well but at cruise or WOT its perfect. did the P0134 go away when you changed the sensor?? and did you fix the P0172? please and thankyou

 

Did you check the hoses that connect to the EGR??
Most of the time when you are in WOT those hoses tend to pop off. That happened to me until I uses a zip tight to hold it in place. I never felt it running rough when the hose was disconnected, but its still a vacuum leak. Keep us posted whether you're still with same problem.