Ok i bought my 97 dx hatch like 2 minths ago, and it has always made a crazy vibrating noise. i thiought iit was the stock muffler, so i got a magna flow. It has a ebay ceramic cheapo header. The previous owner said that the header made the noises. I dont understand how it could tho. Someone explain, The noise sounds like its coming from the rear of the car. i checked all the bolts on the header they are tight. someone hellllllllllllllpppppppppppp!!!!!!!!!!

 

if u can hear it vibrating than follow your ear... civic have a comon rattle that come from teh exhaust i hear about it all the time... make sure thats not hitting anywhere under the car and check the heat sheilds

 

it would be hard to follow my ear, as it only does it at high rpms, not real high tho, and its from the back of the car. i removed the heat shields,. and i cant find anywhere that the exhaust is hitting. maybe its the cat. its like a zzzzzzzzzzzzzzzzzzzzzzzzzzzz noise, real loud at higher rpms

 

lol @ 5500 vtec zzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzoomm

 

its a non vtech, and i dont have a tach. its not really in that high of rpms, just like right about when youre supposed to shift. its the worst in 2nd

 

how are your motor mounts?

 

im not sure, maybe i should check

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lutz707920 &raquo;</TD></TR><TR><TD CLASS="quote">its a non vtech,</TD></TR></TABLE> we need more info about your phone. Call the support line or something....

 

Check your cat insulation/shield. The one under the driver's seat.

 

thanks man, for supplying a resonable answer. i think that may be the one i took off, but im getting it on a lift tomoro, and i ll find out

 

do you have a cat on your car?

 

yeah dude for sure, I had the same thing with my 99 EK hatch. I put on 4 2 1 DC header on my civic and it made a high pitched rattling sound, almost like a buzzing. I think its because the headers are pushing more exhaust through than your stock muffler can handle (if you have a stock exhaust). I also had a magnaflow muffler put on my hatch after it started makin that shitty buzzing sound. When I was at really high RPMs it still made somewhat of a bussing/crackling sound

 

Yep, w/o a cat you'll get the attack of the killer bees sound at high rpm.

 

yeah for sure, once I had the DC header on and the full Magnaflow exhaust I didn't have a cat converter. does the rattling occur from too much flow that the cat would otherwise restrict?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by $hadyJDM93 &raquo;</TD></TR><TR><TD CLASS="quote">yeah for sure, once I had the DC header on and the full Magnaflow exhaust I didn't have a cat converter. does the rattling occur from too much flow that the cat would otherwise restrict?</TD></TR></TABLE>

sorry, don't know why it does it, but all I know it will buzz like a **** w/o a cat.... quite irritating, really.

 

I have a cat on, its the stock one. the only thing stock on my exhaust is the Cat. Im just going to buy a ebay Cat, and get the local shop to weld it on, hope that fixes it. they said 65 to put it on. Is this Alot??

 

it could be that ur exhaust system hangers are gone or not holding up the piping

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lutz707920 &raquo;</TD></TR><TR><TD CLASS="quote">I have a cat on, its the stock one. the only thing stock on my exhaust is the Cat. Im just going to buy a ebay Cat, and get the local shop to weld it on, hope that fixes it. they said 65 to put it on. Is this Alot??</TD></TR></TABLE>

If you have a DX, the cat went out with the stock header. What do you mean you have the stock cat still on the car?

 

most cars have the bees, btu if its a vibration thats something else, when mine vibrated it was the b pipe right before the axle back rubbing on the brake

 

That is probably just the sound that the cheapo header and exhaust make. You could always try welding in a resonator to rid it of the buzzing but if I wee you I would just buy a more quality part.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM-97CX &raquo;</TD></TR><TR><TD CLASS="quote">That is probably just the sound that the cheapo header and exhaust make. You could always try welding in a resonator to rid it of the buzzing but if I wee you I would just buy a more quality part.</TD></TR></TABLE>

i found out the hard way, cheapo header=the bees

i bought a meagan racing header for like 75 more and it sounded decent

 

I dunno... I was using a DC sports 4-2-1 header w/o a cat and had a bad case of the bees. Is DC a cheapo part?

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tuck’d98 &raquo;</TD></TR><TR><TD CLASS="quote">

i found out the hard way, cheapo header=the bees

i bought a meagan racing header for like 75 more and it sounded decent</TD></TR></TABLE>

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kkim &raquo;</TD></TR><TR><TD CLASS="quote"> Is DC a cheapo part?</TD></TR></TABLE>


DC header = $150 on ebay

My manifold = $1300

And the verdict is............YES.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kkim &raquo;</TD></TR><TR><TD CLASS="quote">I dunno... I was using a DC sports 4-2-1 header w/o a cat and had a bad case of the bees. Is DC a cheapo part?

</TD></TR></TABLE>

i bolded your bees for you

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by tuck’d98 &raquo;</TD></TR><TR><TD CLASS="quote">i bolded your bees for you</TD></TR></TABLE>

I don't have a cat, or a resonator and I don't have the bees.