hi everyone im new to the website, i was hoping you guys can help me i have a 97 audi a4 1.8t completly stock just a small intake. i just installed the boost guage and im only seeing 5 to 6 lbs, is that normal? sometimes whenever the car feels like it would overboost to 15 sometimes more and i will go into like a limp mode my car will start to jerk. also i feel like it takes to long to boost sometimes it feels likes its only motor theres no smoke no chenk engine PLEASE HELP!!!!

 

If you're seeing 5psi you're most likely in limp mode.

Can you scan for codes? There can be codes that don't trigger a CEL.

 

thanks for the reply and yes i can scan for them but, no codes what so ever.

 

Im gonna be watching this thread.

How hard is the pull on 8psi??? Like is there a way i can tell the boost without the gauge? I am just curious. Ive seen home made doo-hickeys, but im short on time haha

 

Could be a vacuum issue or N75 issue. If you haven't replaced all your vac lines yet, this would be the cheapest and best thing to start off doing.

 

Buy a gauge. They're $50.

 

i replace almost all of them still have a couple to go and how can i tell if my n75 valve is shot

 

someone please help 84 views and like 3 people answered me please help

 

The vac lines going from the turbo to the N75 and the N75 to the WG are often neglected (I was guilty of that). I would get erratic boosting and one of those lines had a crack in it. If those are good then it's probably your N75. Boost leaks can be another issue and most likely come from a bad DV (also needed to replace that).