Quote:
Boost is supposed to be lower in colder weather, since it takes less boost to achieve the same airflow. 19 psi in warm weather might equate to 14 psi in freezing weather. To determine if your boost is actually too low, you need to look at mass airflow, not boost.
The COBB OTS tunes and most conservative tuners will target airflow in the 220-240 g/s range at 6k+ rpm, since this is the safe limit of the stock turbo. If your engine is flowing a lot less than this, or less than it normally does in warmer weather, then either the IAT boost or IAT WGDC compensation tables (or both) need to be tweaked.
If you upload a log to datazap and link it here, I can take a look at it.
The weather had been the same the whole week like in the mid 40s in Denver and that day it was in the mid 50s. I do understand the less boost in cold weather point but I was making 22psi all week before it went down to 15psi on a hotter day unfortunately. Originally Posted by X49
Chances are his IAT compensation for boost and WGDC were just too conservative. Boost is supposed to be lower in colder weather, since it takes less boost to achieve the same airflow. 19 psi in warm weather might equate to 14 psi in freezing weather. To determine if your boost is actually too low, you need to look at mass airflow, not boost.
The COBB OTS tunes and most conservative tuners will target airflow in the 220-240 g/s range at 6k+ rpm, since this is the safe limit of the stock turbo. If your engine is flowing a lot less than this, or less than it normally does in warmer weather, then either the IAT boost or IAT WGDC compensation tables (or both) need to be tweaked.
If you upload a log to datazap and link it here, I can take a look at it.
I didn't have an ots tune I got protuned by a shop in aurora. I would upload a log but the car is still at the shop and they say it has an oil leak somewhere now.
sadness, smh