Boost change with ambient temp

zigm

Member
Joined
Aug 28, 2004
I'm seeing up to 3psi more boost in the cool mornings than on the warmer drive home in the afternoon.

I know that cooler outside temps can increase boost levels, but mine seems to fluctuate more from morning/afternoon ever since I eliminated the stock wastegate solenoid and went to a inline spring/ball controller.

I don't remember any more than ~1psi variation before. Is a spring/ball controller more sensitive to ambient temp changes? Does the factory ECU and solenoid somehow correct for ambient changes?

thanks,
 
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