Redpit10

I just installed my new revi intake I bought from a fellow forum member. The intake has two 5x7 holes cut into the sides of the intake box. The person I bought it from did this to make it sound more aggressive. I figured I would try out his configuration and I notice that at certain rpm's under full throttle I get some pretty serious dash board rattles. The intake must hit the right frequencies and cause this to happen. Im sure if I cover the holes this will most likely stop. Any ideas on how to qwell the rattles without covering the holes?

I am curious as to how many people with aftermarket intakes have rattle problems. Honestly, the note of the revi with the holes in it is not that aggressive and im figuring that the really aggresive intakes must have similar problems.

lshu

I know this is not answering your question, but I would just cover the holes. The revi airbox is designed to be enclosed so that high pressure air would build up there and be more easily forced into the engine. The holes cut into the box would negate that advantage. If you want an aggressive sounding intake, get an AEM intake. You could also try enlarging the holes or something, but it might just move the resonance frequency somewhere else.

Redpit10

Honestly I dont care about sound. My exhaust will overpower just about any intake on the market. I was hoping that somebody else experianced a similar situation and maybe had a solution so I dont have to uninstall and reinstall the whole unit. I know its a shot in the dark, and also I was just curious if this is a problem that occurs with other intakes.

Mazurfer

Can't hurt to try and cover them up. Not sure how I would do it...will have to think about it. Hell, duct tape may be enough? Was kinda silly that the previous owner did that, but oh well.

Redpit10

Yeah I though about changing the size of the holes to adjust the frequency, but I came to the same conclusion (it will probably cause a rattle elsewhere). Yeah Mazurfer I would have much rather had an un-tampered box, but the price was too good to pass up. I was thinking that maybe that aluminum tape they use in when installing duct work might be my best bet. What you think about the aluminum tape as opposed to duct tape?

Mazurfer

Yeah................I think that would be better. Was wondering if you could cut some foam bigger than the holes, but not too think and then tape that one? YOu might also consider maybe some rigid plastic like the Revi box is made out of and then maybe drill small holes to screw that new plastic piece into the box? Not sure I'd want nuts on the inside of the box unless they had loctite or something on them? I'm sure someone will come up with a better idea........just wait and see.

Good luck!

ChuLooz

^ yea that seems like a real good idea to substitute the duck tape with the aluminum stuff, if ishu's post was correct about the pressure building up in the box than just make sure you put the tape on the inside...good luck

N10S

I don't have the Revi, but I did just install the K&N Typhoon and under WOT I sometimes get that same dash buzz. I haven't had time to try and isolate it yet, but I am sure we are probably experiencing the same sound. It will be interesting to see if plugging the holes cures your issues. I will let you know if I find a way to stop the dash buzz.

Hotsauce

I have the REVI intake with the duct, and I too notice a buzz in the dash at high rpms. I checked the intake for any loose bolts, everything was pretty well tighten down. I'm curious to know the cause.

carbonRX8

iTrader: (1)

um, WOW. Cutting those holes basically destroyed any effects from the plenum. Might as well put a naked cone filter on there. Would have saved you money. Hope you got a good deal.

nycgps

iTrader: (1)

The previous owner is a moron.

and .... how could u buy something like that? I mean a brand new one dont cost that much to being with.

Trekk

I pm'd you

Redpit10

Well I sealed up the holes using hard plastic and double sided 3m body molding tape. I would say it reduced the vibrations by 90% though they are still present. The reason I bought the intake is because I got both the intake (with only a few thousand miles) and the ac and oil cooler screens from racing beat for only $225 shipped. Thats a steal and I was willing to do some tinkering to save a few hundred. I knew that I could always fiberglass the holes if it didnt work out. Thanks for the responses. I decided to go with hard plastic due to the fact that if tape came off it would cover the filter and my engine would end up starved for air.

Rhythmic

I get some dash buzz at high rpm with my Typhoon 2. I've thought it could be the TSB for a rattle under the cowl. Haven't had the dealer do the TSB yet to find out for sure. Colder temps seem to make it much worse. My buzz is very intermitent (my car's buzz i mean), and now that its warm its pretty much gone.

swoope

iTrader: (5)

check and make sure that the bolts inside the intake that go to the firewall are very tight.. then check the bolts that hold the filter in. the bunch of allen ones that are in the blue ring at the back of the intake.

then check both the big clamps that attatch to the filter and the tube that holds the maf. at on time or another i have found some of them loose.

beers

Redpit10

I checked all those and feel they are all tightened sufficently(they shouldnt be torqued on there to heavily, right?). Im thinking the left over rattle could be from that instrument cluster rattle TSB. Seems like the general area of the rattle, and my car is an 04. What you think?

swoope

iTrader: (5)

i had a bit of a noise till i installed the duct.. i did that about a month after i put the revi on.. i snugged up the two bolt on the inside when i put the duct in.. not sure if that did it or the duct changed the whole thing...

mine wasnt really a rattle it was like a vibration..

beers