Gage Posted August 4, 2007 Report Share Posted August 4, 2007 i seen this on matthewsvolvosite and it kinda makes sense so im gonna give it a try N/A Air Box T-stat Fix Link to comment Share on other sites More sharing options...
Dmsee Posted August 4, 2007 Report Share Posted August 4, 2007 Look at the thermostat when car is cold your flap should be closed. Drive the car for 10 minutes or so and if it opens everything is working. Link to comment Share on other sites More sharing options...
maiku Posted August 4, 2007 Report Share Posted August 4, 2007 i modified my NA so it was open all the timeyou can also remove the pipe going from the exhaust manifold to the airbox and cap the airbox for a few hp gainsjust let the car warm up a bit longer before gunning it Link to comment Share on other sites More sharing options...
info2x Posted August 4, 2007 Report Share Posted August 4, 2007 It's true. I did this over the summer, HUGE improvement. I was going to just remove it but at school we get pretty cold and I don't want to wait too long for my heat to kick in. Link to comment Share on other sites More sharing options...
erikv11 Posted August 5, 2007 Report Share Posted August 5, 2007 This mod makes sense, and I did this to my car, but I could notice zero difference. But I also tested the airbox thermostat at the time and it opens and closes with temperature. So maybe it was working just fine and that is why blocking the recirc closed didn't seem to make a difference. Link to comment Share on other sites More sharing options...
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