Stromung cat back Group Purchase

[Stan]

A new list:
@shoppingshzhang
Aufbau Principle
Sherms
bc419
tk-421
cEm30

@dfraid

[Aufbau Principle]

My muffler has rattled apart inside and the autox people were asking me if I could quiet it down a bit, another round would be very nice.

[mach schnell]

Can you guys share what your bent tabs look like, so we can compare?

Looking at other photos here, mine are definitely bent as well. I received mine a few months ago, just installed it. I will need to bend the tabs back to get the muffler aligned. Nice muffler but shame about the brackets.

[projectJTv4]

Can you guys share what your bent tabs look like, so we can compare?

https://www.r3vlimited.com/board/forum/e30-classified-forums/group-buys/9861971-stromung-cat-back-group-purchase?p=10019571#post10019571

In case you missed my post, I think it shows a clear comparison.

[mach schnell]

Also is there a difference in the exhaust hangers on early 325’s versus late ones?

I have an ‘88 Touring.

[mach schnell]

Can you guys share what your bent tabs look like, so we can compare?

[Stan]

Is there interest in another group buy? 10 buyers minimum.
Read page one of this thread

[pj29]

I got my exhaust a few weeks ago and had it installed recently.

Pros: Looks great. Well-made. Sounds rad as hell when starting the car and above 2800RPM (3-5k seems to be the sweet spot for sound).
Cons: A little bit louder than I'd like at in-town speeds and a little droney. I plan to get a silencer or see what I can do with resonators.

Given that my OEM was a rattling can of rust, this is an upgrade but it's a little loud for dailying. Still, with that caveat in mind I'm happy with it.

Finally installed mine from LAST years group buy.

I agree with you and have the same comments. A little louder than I expected for daily driving and definitely a little bit of drone even around town and on the highway. It is actually a little more quiet at full throttle than I expected as well.

That being said, I could put my hand in the rust holes of the old exhaust, so this is a serious improvement over that.

I am happy with it overall.

[Maybe Magpie]

I got my exhaust a few weeks ago and had it installed recently.

Pros: Looks great. Well-made. Sounds rad as hell when starting the car and above 2800RPM (3-5k seems to be the sweet spot for sound).
Cons: A little bit louder than I'd like at in-town speeds and a little droney. I plan to get a silencer or see what I can do with resonators.

Given that my OEM was a rattling can of rust, this is an upgrade but it's a little loud for dailying. Still, with that caveat in mind I'm happy with it.

[pj29]

Today or tomorrow, my mechanic is installing the one that ordered the end of last year.

I will report if there are any fitment issues.

[Toowav]

projectJTv4 I have not fixed it. I did struggle a lot because of how bent the tabs were.

[TKuhl]

I have a single tip m42, and all brackets and welds looked great when I opened the box. I think quality was great on what came to me. I also used new hangers. After install, my tip was definitely all the way to the driver side and not centered, and the muffler itself does not sit level. I attribute this to 30 yr old cars and variance of hangers etc and not to the craftsmanship of Stromung. It all bolted right in very easy but the exact fit and center may need a little more finesse

I loosened it all up, found if you try to rotate the mid pipe between muffler and cat it will change the muffler/tailpipe a little although I did my best to keep this as tight to car as possible for ground clearance. What worked best for me, I put a block/wedge between the corner of the rear hanger and the spare tire well (you can sort of see this in the last picture above) then with my feet on driver side of muffler I pushed in, sort of bending that bracket a little bit, then holding it more to the passenger side I re tightened all the clamps. It fixed the centering of the tailpipe however the muffler still isn’t “level” but it doesn’t bother me enough to re bend stuff.

[Stan]

I didn’t end up following through with my exhaust for my m42 as I am doing an s50 swap now by end of year . Is there any options for e30 with a swap?

Send an email to Scott.

[prisonerofdoom83]

I didn’t end up following through with my exhaust for my m42 as I am doing an s50 swap now by end of year . Is there any options for e30 with a swap?

[m3clutch]

I am having the same fitment issues. My exhaust arrived with a severely bent tab, just as bad if not worse than the one showed on here. My exhaust is having the same drivers side sagging issues, to the point where the passenger tip is touching the valence. After massive work I managed to get it to not touch the valence, but it nowhere near straight and my front hanger is severely stretched. All hangers, rubber, straps, bolts, are all new OEM. I’ve had this thing on my lift since Tuesday and I’m pretty over it at this point honestly.

my photos are too big to post apparently.

are we discovering quality control issues in this thread now? I'm interested in investing in a new system when i weld in new cats...maybe I'll stick to my rusted out catback LOL good sound still! haha