I just installed a boost gauge, and found out my max boost is at 17lbs. I read the specs for my truck and it says 20.6lbs max. Where are my 3 lbs missing ????

I checked all the hoses, cleaned up IAT but haven'e messed with MAP
What controls pressure, and is it possible to increase it ?

Thanks

 

depends on how your running the truck for that reading. If your towing a good load you might see the 20 or if empty up a grade you can prolly do it but empty on lever ground you will have a hard time puttin enough load on the truck .

 

Valv,
I have a '99 also and I can only muster up 17 psi too. Haven't tried checking while towing since I have towed very much yet.

Mark

 

The wastegate isn't an exact science, things get old and rusty, worn out.

Also, the guage might not be dead on accurate.


phox

 

I'm kinda jealous, mine keeps throwing a code saying I'm boosting 36 psi +

 

Don't know if any thin g on my truck is old rusty and worn out, But that is how I feel somedays.

 

On a stock truck (without a boost fooler), you will set a code if the boost goes above the max (20.6). That's where the max value comes from. If I remember correctly, when my truck was stock (it's been awhile), that was about the boost I was making.

Paul

 

Ok, thanks everybody, I was checking if everything is fine.