Check your plenum bolts if you have a spacer
Originally Posted by GixxerSteve
For the ones that were loose, how long ago did you install your spacer? And how about the ones that were still tight, how long ago for you? I wonder if this is an issue that arises after the spacer has been installed for a longer period of time. 
Originally Posted by jclayc
mine were loose... even the 6 middle ones I used LocTite on. Maybe I'll go get some of the "permanent" LocTite ("Blue"?) instead of just the regular stuff
With all of these issues after 6-8 months, I think I might need to check the bolts on my FX...
ugh, you're right Mmagic... I'm going to have to check those inside the plenum too..
My kit from Motordyne shipped with LocTite... I used what they shipped. But the bolts I used them on were still loose...
My kit from Motordyne shipped with LocTite... I used what they shipped. But the bolts I used them on were still loose...
Joined: Apr 2004
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From: Burbs of Philly
Originally Posted by Mmagic76
Forgot to mention that I checked my throttle body bolts as well and they were loose.
Originally Posted by RXM
I'm starting to think that the instruction manual needs to mention in their instructions to make sure bolts are tightened every 3 months or so. I was losing power in my car, so you can guess how loose my bolts were
Joined: Apr 2004
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From: Burbs of Philly
Originally Posted by Mmagic76
Did you check the bolts inside the plenum? I only tightened the ones on the outside... I was going to check the inner ones but it's such a PITA just to get to them!
Last edited by RXM; Oct 3, 2007 at 10:53 AM.
Originally Posted by RXM
Are you referring to the six bolts that hold down the lower plenum? I didn't retorque those yet...now I'm starting to think I should check.
Joined: Apr 2004
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From: Burbs of Philly
Originally Posted by jimmyc13
I didn't use any lock-tight and just checked mine...they're all snug & no issues, and I've put about 30K miles on my car since the install.
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From: Burbs of Philly
Originally Posted by Mmagic76
Yup, those ones... if you do check them, let me know if they were loose!
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Joined: Sep 2003
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From: Ithaca, NY
Same here. I didn't use locktite. I checked my plenum some several months after install and they were all still tight. I don't get annoying whistling or anything, I just notice that on the highway I've got more speed or the car feels like it has longer legs as it will really keep climbing 