What is normal boost psi for a stock turbo? I will get about 3-4 cruising at certain speeds and about 17 or so when i accelerate. When should the boost start RPM wise? currently running the M3 tune on the X2. Wondering i if have low boost but no code. What would help me get a faster spool up?

 

Boost readings are low - are they from the Commander?

Verify with mechanical gauge.

Should max out ~ 32psi stock.

 

I have only been able to hit 22 psi on my 03 so model. Reading is with a commander. Are the commanders known to be off?

 

Problems with electronic gauges are more likely than mechanical analog.

Your HE341 turbo won't boost as high.

 

no tune on mine with just an intake/exhaust im maxing/dumping boost at 28 psi. cruising at 60+ runs around 10 psi.

 

Mine runs about 3-10 psi when cruising depending on terrain and right foot. I have seen 36 psi on the stock turbo with the edge in stock. which surprised the hell outta me..

 

Using the commander to measure. Is the commander off reading too low? i think i hear the turbo start to spool b-4 i get a reading. How can i get a faster spool up?

 

Doesn't the Quad box boost-fool even when extra fueling is not engaged?

I know the Quad on our '05 does, as long as it's plugged in.
Stock fueling then produces 36-38psi boost worth of drive pressure on the HE351.

 

i know the quad xzt i ran on my 05 with stock lp, intake and exhaust would hit 42 psi max. surprised the heck out of me that it would hit that..

 

With a different boost elbow and a boost fooler I can get the turbo on my 03 SO to 33-35psi. I don't beleive they are that efficient when they are that high though.

Before I got my boost fooler if I touched 25psi it would pop a CEL for overboost. The truck sortive went into a "limp" mode until the code was cleared.