I ordered Fast Intentions Resonated Test Pipes, ThaiThanium Resonated Y pipe and the rest of the exhaust was from SOHO Motorsports.

This is what I ordered, with burnt tips: https://sohomotorsports.com/products...atback-exhaust

Right from the start the install was a mess. The left tip stuck out further than the right tip. V-band was adjusted multiple times but it wouldn't fit properly. The left side was also extremely close to the sway bar and there was concern it would rattle. I called SOHO and they weren't able to provide anything at all over the phone while it was on the lift. They told me I have to email them and they don't have an ETA for when they may reply. So I went home and sent the email immediately.

There was a noticable rattle issue, which I figured WAS due to the fitment being so close to the OEM swaybar. I emailed them about fitment and rattle and one of them (Alejandro) got back to me from a different email asking for specific pictures, which I sent that day. Six days later I still hadn't received a response and I called them and they said they didn't see my email, so I forwarded it to them and they now said they see it. Nik joined the conversation by email and got back to me an hour later. They asked for more pictures so I took more of the same pictures at different angles to see if it satisfied what they wanted in the images. We went back and fourth a few times that day.

Then there was no response from them for another 6 days so I emailed them again asking for an update. STILL NO RESPONSE! So I called them 7 days later (that means a total of 13 days without an answer). Nik asked me for measurements and I sent them.

Another 7 days goes by without a response so once again I need to remind them to do their job and reply to their customer. He replied to quantify the issue as a non-issue, regardless of the blatantly obvious difference in person. He said "With the provided measurements I do not see an issue".

Regardless of his opinion of if the measurements are an issue, it's clearly visible in person and this doesn't resolve the rattling issue. I thought for a moment the issue was gone because I was able to put shims in a certain spot but it turned out the issue was not gone. I have since paid for multiple shop visits to try to fix this (it seems like it's fixed because it can't really be intentionally reproduced, only to later find out the issue still exists) as well as paying for actual shims and grip tape since I didn't have anything good that would stay. Those eventually fell out too. Then I purchased new OEM bushings and had those installed.

I've spent so much extra on top of the $1,495.93 for the exhaust just to get the rattling to go away and I have no solution for the uneven tips.

They don't seem to have much interest in helping so I didn't bother to continue trying to get answers out of them. It isn't the responsibility of the customer to remind the company to respond to them. Either hire enough staff to handle the support or do something else.. but figure it out.

Based on this experience I never want to purchase anything from SOHO again and I always let people know about the lack of customer support and the issues I've had. I have posted about the rattle here before, and another user actually contacted me describing the same issue and wondering if I've fixed it.



So to this day the rattles have gotten worse and it's ridiculous to go through this after paying this much for something specifically crafted for the vehicle. At the very least since they are unwilling to assist with their products and stand behind them I would want a partial refund. They're lucky I didn't charge it back.

 

Care to post some of these detailed pictures and measurements?

I like to believe that these types of systems are built on a jig that was made from a stock car. In this case it means any rubber components or damaged parts that now sit crooked will play a major effect into how it all looks.
Many of these cars have been in accidents before, many times undocumented. Having a tip not align with the other could be an appearance issue from the car and not the part itself.

The system overall should be equal length, by measuring the exhaust you can quickly deduct if your alignment issue lies in the part or the car. Another common rattling point is the exhaust metal bracket that holds the exhaust in place if it ever fell.
Plenty of documentation that many exhaust companies products touch this bracket and are the main cause of vibration. (I'd personally would take it off, you will NEVER run into a situation where you will need it to perform and many times it will touch with the exhaust)

All drivetrain mounts in these cars are fluid filled and though many appear to to be "ok" a mount can collapse lowering the engine towards the collapsed mount which means it will push the middle of the exhaust down will it raises the mufflers towards the roof of the bottom of the car.

Pictures will help us guide you in the right direction, if you can find at the end that the issue was from a manufacturer error you can present this info as evidence. Where you get crickets in is with other people's feedback. You compare parts sold vs customer complaint, as long as the quality control is there, with these products there's not much that can go wrong however the ultimate guess will be the customer's vehicles condition.

 

Thanks. I don't know how soon I'd be able to measure the overall exhaust measurements but yes I can post the measurements I do have later as well as pics. However, it would fall under the same issue where it comes down to the opinion of the reader of if the numbers are an issue or not. Interesting points, though. Instead of brushing off things they could have stated something like this. However, the previous Stillen exhaust fit flawlessly and the single exit fit just right too.

Are you referring to this part which I just bought new ones of and replaced? Or some other part? Thanks.

 

This right here. Having switched from other aftermaket exhausts without any issues is a concern however it boils down to how specific and different the soho one is compared to others.
At the very end I believe it will take the removal and inspection of the exhaust to look for areas that show metal to metal contact.

 

Thanks. I'm really sure that it's in the back of the car but I know that it could be deceiving with sounds bouncing around and make it sound like it's in the back. But also depressing the suspension in the rear of the car making the noise go away seems like another indication it's in the rear. In the video that I posted of the sound it sounds clearly like it's coming from the back and when I stand outside the car no matter where around the car I stand it sounds like it's coming from the back. I would be very shocked if it was coming from this section of the car which you circled.

Actually, I don't have that part. Here's a picture from after the exhaust was installed:



It's also technically possible that it's a coincidence that it just started once the exhaust was put on and it's actually something else.

 

Resonated test-pipes, and four resonators in the catback? That's pretty interesting.

Aside from the rattle, the exhaust probably purrs like a happy lion.

 

yes lol but 8, not 4. There are 2 in the mufflers, 2 in the mid pipe, 2 in the y pipe and 2 in the test pipes.

 

I just watched the video.

I hear:
Rasp coming from the exhaust, sounds like about 3k rpm
I also hear suspension squeak as you go over road bumps
The thump is a bit hard to distinguish, unsure where it's coming from however sounds like a metal tool box bouncing in the trunk.

 

There's 0 rasp. The sound is a squeal but may not be coming through accurately in the video because it's recorded with a phone (and compressed because the filesize was too large for streamable). The identical noise occurs while car is idling and is intermittent, and the other day it stopped when I depressed the suspension in the rear. I have sat on the bumper trying to bounce on it and see if I can get the noise to start happening again, but I haven't been able to. Also keep in mind I have the passthrough opened in the rear seat and I'm holding the phone behind the passenger seat.

Here's how it sounds when revving: https://i.imgur.com/6d3hjSd.mp4

The suspension squeak -- yes.. can definitely hear that in the video a bit. It's either that or this piece of wood the amp is mounted on coming in contact with the car body in the trunk. I think I resolved that by squeezing in a piece of neoprone padding but maybe the wood cut through it. Either way that sound isn't the one I'm referring to.

If by thumps you mean the consistent thump that kept playing over and over, that is just the part of the road not being very smooth.

So it's just that noise right in the beginning that is the issue, which occurs later on too.

 

@BULL The sound was happening when I was already about to stop somewhere so I got out and got a video.

https://streamable.com/jixuoe

 

You're absolutely right about the whole fitment issue since I have the same exhaust. I ended up flipping the rear part to give me more clearance. The driver's side touches my CF diffuser but the passenger side is fine so you could tell that it's slightly uneven from one another. The quality is great as well as the sound but fitment was pretty horrible and worst than my previous Top Speed exhaust.

 

Yeah I tried a bunch of things to fix it, and don't want to do that. I decided to order a new exhaust. I ordered 9/1/22 with a stated 8-16 week lead time (it's now 21 weeks) and from what I've been told a couple days ago my order will probably be made and shipped this week.