It's not what you think!

How much and how long should a PSD make exhaust steam on cold weather start up? Had mine plugged in for 2.5 hours. Temp was about 30 deg. Started it and let it idle while I scraped the windshield. Lots of steam (billowing) for about 5 blocks. Increased on acceleration and exponentially increased when turbo started to kick in. None present on deceleration or idle. Not using any coolant.

It was puffy and white and dissapated quickly but there was lots.

 

are you sure it was steam? it sounds like it might either unburnt fuel or oil burning or a mix of both. i get a little white cloud starting up on cold days because the engine isn't warm enough, but it goes away after a few blocks. i've never heard of a psd steaming but i could be wrong. others should chime in