I just had this installed today and there is so much more noise coming from under the car now. In a few words, it sucks! Is there anything that might have been done wrong or a fix that I am not aware of. I know there is a lot of talk out there about this system but I could not find much about extra noise after the install. I had them put extra spacers on so it did not hit the exhaust ( Alta 2.5) but now I don't know what to do. Thank you all for your help. Jeff

 

Try contacting Randy at M7.

Nothing is loose after your install? Double check for anything that was not fastened down completely or if anything worked itself off/loose.

 

Agreed. Check all the bolts - including the ones that hold the USS together. These should be nice and tight. Visibly inspect for things that could be rattling (is is a rattle? Or what is the noise you're hearing?). I only know of two reasons a USS would be noisy: (1) something is loose, (2) something is rattling against it (most likely culprit: exhaust).

Randy at M7 has solved most (all?) of these issues on a case by case basis.

I personally have NO issues with mine. But I have the stock exhaust.

 

...mine is still hanging in the garage...

 

...why?

mb

 

I'm not fond of using nutserts to plug up drainage holes. Long term these two areas will promote rust and eventually failure in my opinion.

 

I hadn't really thought about that... If I was worried about that, I'd probably drill a couple of small drainage holes nearby...

 

I hadnt thought about that either... I will probably drill some more holes while im at it

 

I am going to re-check everything to make sure it is tight. It is more of a grinding type noise not really a rattle against something noise, I don't know. Does anyone out there know if Randy is in the shop or at AMVIV? Thank you all again. Jeff

 

...I live in the North East. Southern cars may never have a problem...and this is speculation on my part...but pretty good speculation

 

So it isn't wind-related?

 

No it happens in turns and when I let off the clutch, pretty much all the time.

 

...exhaust...perhaps you've a broken engine mount and things are moving around a little more than they should. Broken engine mounts are fairly common.

 

Is there anyone in the western Washington area that could lend a hand? I'll buy lunch, dinner, beer?

 

Well it is now fixed, nothing that 1 inch of washers couldn't fix. This might be a stupid question but does that compromise how the system works in any way?

 

Probably some, but maybe not. Glad you got it sorted as I know several have given up on trying to make the USS work with the Alta exhaust. I know I gave up trying to make it work with my Miltek. Curious that even though M7 is aware of the fitment issues with these two exhaust there is still no mention of it anywhere on their website.

 

Great news that it's now working OK.

If the USS was designed with washers (locking washers??) in mind then it's probably a compromise for fitment and clearance sake but the spacing of a washer could be kept in mind for any future refinement in design. No need for washers would be best- less flexing, less things to get loose, less complicated.

1 inch of washers? What do you mean 1 inch? Got a picture of that?

If you use the USS on the street then just loctite the nuts and check them often to make sure they are not shaking loose. If you use the USS on the track then check them before during and after every run and expect some flexing and wear and possibly some additional stress on the points where the washers are being used. Look for tiny cracks over time. Alot depends how hard you corner and your setup.

 

I'm interested to see how this is done!!

 

Ooooooops. "During" won't be easy unless you have some sort of sensor on your washers to indicate they are getting loose.


Before and after is good. And anytime you hear really loud rattling from underneath.

I once was at the track and noticed my exhaust was extra loud. Looked underneath and found I had lost one of my two bolts between the header and cat back exhaust. The join was open a crack.

Nice throaty exhaust and maybe helped HP a little but maybe 2 or 3 times louder (miltek) than usual.

 

I just used thick washers and after stacking them it = about an inch high. Next time it is on the lift I will snap a shot.

 

That is what I thought.

If you have a long bolt and alot of washers then you can use it to make enough clearance between the bottom of the car and the ??USS??

Like this but only washers?


But doesn't it mean then a longer bolt which means more torque on the length of the bolt- might not want to overtighten it.

What about nuts to use a spacers at least they don't move once tightened down and maybe some locking washers instead of flat washers.

Just some ideas.

 

Guys... I am about fitting an USS from M7 but I have a Cooper cabrio with an Milterk Cooper S exhaust... will this be a problem!?

Coen

 

Some people had a problem with their Milltek exhaust rattling against the USS. Spacers may help but there was a case where the issue could be not be resolved.

 

My miltek will be only catback... which part of the uss will the exhaust rattle against then!?

thanks for helping me out!

Coen

 

You won't know until you actually try to install it. You might be fine. If you see something close to rubbing, then you will need to shim it. I would use thick shims instead of many washers, as some have done here. It still looks like the USS sits closer to the frame than the TSW X-brace. But haven't personally seen a X-brace yet, just pics.