Marc911

car is throwing no codes when I vag'd it Any thoughts?
I do not trust the dealer

V8_SPANKER

and depending on your boost guage's precision, you might get smaller/larger values than others.

Mark P

A.) Colder air may have your ECU lower boost as air is denser and can contain the same oxygen/power with less boost.

B.) If your car was trying to achieve 8-9psi, and only making 6-7psi due to a leak (for instance), it would have to be pretty bad since there is still a lot of overhead that the turbo is capable of working harder to meet that demand. If it can't meet that demand, then the issue is quite intense (unlikely). Therefore, if you were to put it in chip'd mode, you would likely still only see 6-7psi (if you had that major issue). If chip'd mode puts you at ~15psi, then all is likely well, and slightly lower boost may be due to temperature conditions.

Marc911

In NJ, was in the 20's yesterday, going to put the APR ecu back in today.

blueS4 (vince)

6-8 psi (depending on temp). I did check block 115 and actual vs. requested appear to be in check.

Marc911

air on my last turocharged car.

DAP@EPL

Colder air is denser so less boost is required to achieve the same airflow.

-Dave Pramanik

NYC_S

I though my boost is running kind of high for stock though.