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      07-25-2010, 10:32 PM   #3
Ilma
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Canada
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Drives: 2008 135i
Join Date: Nov 2008
Location: Mississauga

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Lol.....you are not the first to do this mod.

I used a coat hanger....ghetto I know!

In regards to air temps.

I have been logging intake temps in 72F weather and find that at constant cruise low throttle around 2-3K rpm my intake temps sit around 89 to 90F.

During WOT my temps drop as low as 86 during a full 3rd gear pull from 3K rpm.

Not bad for a DCI setup.

Even with a cold air intake setup, your ambient air is going to pick up some heat travelling past the turbos.

I had the stock CAI on last week and noted about a 5 degree improvement over the DCI's at times, but the DCI's are less restrictive and have better throttle response.

They also pull a little harder at higher rpms which is where to stock CAI restriction becomes more of an issue.

A CAI might be better at heatsoak recovery though, since you would be pulling in cooler air immediately to help bring the intercooler temp back down.

But I found that I could get my intercooler back down from 106F to 89F just by using half throttle or so for a couple of gears.

The key is to get airflow into the intercooler.





This is with an aftermarket intercooler though.
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