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Old 04-10-2012, 06:50 PM   #17
Registered User
Join Date: Jan 2011
Location: Oregon
Posts: 92
My Ride: '91 318is/ '03 325xi
update- I've changed the air boots, and dropped the OEM air box back in. The car is idling very good now, sounds great and seems to have no problems. The clamp connecting the deep boot to the throttle body is a pain. I just got the new gas filter in the mail too, so guess it won't hurt to replace that also.

The butterfly in the DISA seemed to rattle a bit when I had it out and shook it, but the spring seemed to be fine. Also there was no noise coming from it when it when the engine was running. I checked by disconnecting/connecting the plug. I don't want to drop $200 dollars for a new one if it doesn't need it yet. Any input?

Thanks for the help, You guys make DIY's easier and also help save quite a bit of shop money!
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