well i just got my s4 about a month ago and today on the way to work i was on the high way and stepped on it to get up to 75mph but it didn't feel the power i usually do when i step on the gas. so i got scared pulled over on the next exit and poped the hood open to see what could be the problem be. all the hoses seemed to be connected right , i didnt see no black smoke and i didnt smell any gas .

what do you guys think the problem is my only 2 guesses are boost leak or the after market dv's that came on the car may not be working the way they should.
and how can i check for a boost leak??

i will post video shortly

 

do you have a boost gauge?

 

nope i wish i would of bought one right after i bought the car . right now im buying a boost gauge ,and hose silicone kit,

 

that could help tell you if you are holding boost or not, another good tool to buy is a vag-com cable. This is something that is still on my wish list as well