bad noise after Berk TP install
 

So this past weekend I installed a Takeda long tube intake, Berk Tesp Pipes (non res) and JWT flywheel.

So anytime I get around 2500-3000k RPMS during acceleration and decel, I get a bad Rattle noise, Then it smooths out and and sounds as it should.

So I can tell the difference between the hiss on decel, the normal rasp of non res pipe during accel, and the jitter from the flywheel on low RPM, but this rattle sound I cannot figure out. Any one experience anything similar? I'll try to get a video later.

Also forgot to mention, 2 of the hangers that hold up the my Stillen CBE near the Ypipe seems to be gone (previous owner broke them I'm guessing) so the Y pipe was close to the cross member, So i tightened everything up, added some rubber matting between the pipe and the cross member and it made no difference.

I think you're hearing hiss. Welcome to test pipes

No metal on metal? I had Berk CBE and their resonated TP I thought mine came from metal on metal but never found the problem. I put pressure on the exhaust tips once and the noise went away. But I never did figure it all out. Maybe a bolt needs more torque

It really sounds like metal on metal but nothing I see until I get it up on a lift again tonight. even in 4th and 5th on the high way with the windows up there is a prevalent rattle any time I give it a little gas. I had straight stillen on my 350 as well so I'm definitely used to a raspy exhaust and I don't mind it at all. Everyone keeps saying its just TP rasp. but unless there is some major change on the 370 that I haven't read about yet I can't figure it out. Its a pretty loud rattle, way louder than the actual exhaust tone.

I'd double check that everything is tight again, try and see 8f some pressure on the exhaust tip 2ill quiet the soun. Sounds stupid

yeah i'll give anything a go at this point, its embarrassing to drive.

I too had a rattle sound (metal to metal) inside the cabin after I installed my headers. I made sure everything was tight and I had clearance all the way around. I even put rubber matting on the cross member (after FI install ); the rattle was still there. It was only when I did some work in my engine bay that I discovered I had left a wrench. It had feel between the battery and firewall just right. So make sure you have all your tools accounted for.

It's normal with the stillen cbe. I had this setup, there's a video onmy for sale thread. I just learned to either go slower threw that section of engine rpms or faster so you couldn't hear it as bad. Yes it sounds like $hit

This is 100% for sure due to acoustic resonance no longer canceled out by the OEM cats.

The only solution is to swap out the current TP's installed for a set of resonated TP's (or resonated HFC's).

Alternatively, you can get LTH's which will change the acoustics, but obviously swapping out one set of TP's for another is the easier solution

Well this is a bummer, I watched your videos before ordering a pair and I guess I just couldn't hear it as much. I like the way your videos sound, but in person is just worse I guess. I was super excited for this set up but now it seems like a waste of time. I knew there would be rasp, but RATTLE is a totally different beast. Don't think its something I'll ever get used to. Off they go.

Resonated pipes won't work as I had Berk resonated pipes and I still had that noise. Maybe some wrap would solve it.

Well thats not what I was hopinh to hear. I have a set or resonated ART's coming in. I'l let you know what happens. Ill have to get rid of the stillen CBE if its still there.

I have berk hfc paired with m7 exhaust and I have the same rattle noise exactly between 2500-3000 rpms on decel only. It definitely sounds different than a normal hiss.

I think the issue may be from your berk product since we seem to have the same issue.

I'm going to have an exhaust shop take a look at my whole thing to see if there's any leak in the system.

+1
My test pipes buzz the crap out of my Berk exhaust. I'm going to experiment with putting some dynamat on top of the Berk cans to try and change their resonance but I've not got around to that yet. If it fails I'm probably going to ng to have to pop on some resonated test pipes. (Ug! more weight)

Ehh, it might be a matter of degree. Any resonated TP's will definitely minimize it from what you are hearing now -- which is, frankly, fucking insufferable at low speeds on decel, as I recall.

FWIW, I had a set of CNT resonated TP's I picked up used, and they worked very well.

I can't imagine there's all that much variance in the resonators various companies are selecting, and they're all going to be in the same location (with the exception of the ART pipes), so I think you'll still be happier with any resonated TP's over none.

I say, see if you can find a set of resonated TP's used (i.e., on the cheap) and give it a try. You can always re-flog them on ebay or here if you aren't happy... good luck!

EDIT: Sorry missed that you have a set of ART pipes coming. You should be happier with the tone once they're installed. Let us know how it works out.

THIS!!!!!

Yeah I feel like I did plenty of research on this site before ordering them and no where did I read a line like yours above. It really is just ******* horrible. Everyone keeps using the word RASP which in my opinion is not the right word for that awful sound. Had someone mentioned that anywhere I would of stayed waaaaaaay clear of them and ordered HFCs instead. Atleast I can be a bit optimistic with the ARTS, should be here in 2 days :ughdance:

Trust me it's the stillen cbe it's not worth howmuch they sell it for. Fast intentions does not do this with berk test pipess

It's like rapid fire metallic farts or something; a robot with the shits PBTHTHTHHHHHBBRRRRHHHHHHBBBBBBHHHH :rofl2:

Making my way down narrow side streets punctuated by speed tables was murder because I'm always slowing down and the location created an echo effect. I used to do everything in my power to avoid that RPM range... which is impossible.


I've had it with the OEM and the Nismo (Y-piped) exhaust too. Untested, at least by me, with other CBE's.

It could be that the FI has something different going on to minimize it, tho'. Does the FI have a different Y-pipe or maybe an H- or X-pipe?

Funniest **** ever right here! You pretty much summed my feelings exactly haha. Driving in an out of my apartment complex echoes off all the garages and drives me nuts.

I know exactly what you are talking about.

I had an Akrapovic for a month. Was great.
Got Motordyne ART pipes . And it was the worst thing ever.. 6 days later i sold the whole setup.


Apparently some exhausts dont pair well with test pipes or whatever.
Its not hiss what people claim, Its the disgusting rattle that sounds like you have drilled a hole in your exhaust.

Rattle is completely gone after ART install! Can't explain how stoked I am lol. F you berk TPs! Viva la ART!

I just installed my Berk TP's and Borla dual exhaust which uses an H-pipe to replace the factory Y-pipe and am hearing the same ridiculous noise :mad: