MisterMR

iTrader: (1)

The other day while driving I noticed that whenever my car is at the ~2K RPM range, I can hear a weird clunking or rattling noise. I think it's coming from under the car right below my seat. My first impressions is that it's the aftermarket downpipe I installed hitting against the tie bars in the front, but I can't be too sure. The noise happens seemingly all the time at 2K whether I'm accelerating, decelerating in gear, or coasting.

I'm wondering if this could be anything serious that I should stop driving immediately because of. Sometime tomorrow I'm hoping to look under my car and see if the downpipe is hitting against something. It's just weird that it only happens at 2K. Any ideas?

nlped

iTrader: (17)

Any other mods? If not that is probably the case, most aftermarket downpipes don't like the factory lower control arm braces.

snowmants

iTrader: (2)

Hey !!!! The same thing is happening on my 2006 MR BR330....It has a replacement full exhaust from Buschur. It feels like it is right under my seat as you said. when I look under the car and rev it with my hand in neutral i dont hear it...it seems like i only can hear it from inside the car too. But that sounds like exactly the same thing Im hearing! It sounds to me like the exhaust rattling against something, but i cant be sure. I was worried the exhaust was loose...let me know if you get this figured out!

dcvolki

iTrader: (9)

if your dp is touching the bar it will make that noise or if the bar is not tighten up enough..

snowmants

iTrader: (2)

looks like it is touching it...hmmm do you think thats bad? seems like when I make sharp left turns at low speed, as in when im maneuvering around a parking lot at like 5-10mph it rattles too.

dcvolki

iTrader: (9)

u might wanna put some spacer to the bar than tighten it up..

snowmants

iTrader: (2)

hmmm ok...well i will have to wait till I get the chance to get under it...wish i had ramps or something

dcvolki

iTrader: (9)

what kind of dp is it anyway some dp's comes with the spacers and bolts evrything u need to install it..

hotrod2448

When I put my hiflow cat in, the heatshield in the driveshaft tunnel would rattle and vibrate like crazy. The triangular shape of the factory keeps it pushed up against a little bump stop but, when I put HFC in that was different shape it would rattle and vibrate the whole floor at low rpms. I ended up just taking the heatshield out.

snowmants

iTrader: (2)

it is the standard cat....but it is the buschur racing turbo-back. Im suprised they wouldnt put spacers in if they were needed...maybe they did and it is still hitting...Ill shoot david a PM and ask him about it.

MisterMR

iTrader: (1)

What's the best thing to use for spacers? Will a couple of stacket washers work?

IMR-TIM

iTrader: (2)

...that's what fixed my noise when I installed all my exh components

David Buschur

iTrader: (53)

The 2.5" downpipe we install on the BR packages do not require spacers. I'll answer your other questions in your PM.

David Buschur
www.buschurracing.com

snowmants

iTrader: (2)

Oh and for the record...The car is fantastic...and the Buschur Guys were quick to answer my questions. I would recommend them 100%.