Stromung cat back Group Purchase
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What model do you need?
Pretty good progress so far.
List so far:
1. Zzyzx85 - 325i
2. OldDogNewE30 - 325i “Cabi” dual wall tips
3. hotbascosauce - 318is
4. jrobie79 - pending muffler only
5. KyleHugo -325i
6. TC Baur MD - 325i
7. Alberthype
8. BadDays
9. RyansE30
10. AmosCake - 318is
11. 88Sedan - pending pricing info?
I've also posted a link to this thread on a few FB groups.Last edited by Zzyzx85; 02-09-2026, 10:06 PM.👍 2Leave a comment:
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1. Zzyzx85 - 325i
2. OldDogNewE30 - 325i “Cabi” dual wall tips
3. hotbascosauce - 318is
4. jrobie79
5. KyleHugo -325i
6. TC Baur MD
7. Alberthype
8. BadDays
9. RyansE30
10.
I'm inLeave a comment:
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I'm interested in the muffler only, with a 3" inlet. I'll reach out to strommung and see if that configuration can be part of the group buyLeave a comment:
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I would be interested in the quieter one as well, and what is the group sale price we are expecting?Leave a comment:
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meant to quote you hahhaa I’m IN!!Things are in motion!
1. Zzyzx85 - 325i
2. OldDogNewE30
3. hotbascosauce - 318is
4. jrobie79
5. KyleHugo
6. TC Baur MD
7. Alberthype
8. BadDays
9. RyansE30
10. Amoscake - 318is
318isLast edited by AmosCake; 02-07-2026, 11:40 PM.Leave a comment:
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Take my money!
1. Zzyzx85 - 325i
2. OldDogNewE30 - 325i “Cabi” dual wall tips
3. hotbascosauce - 318is
4. jrobie79
5. KyleHugo
6. TC Baur MD
7. Alberthype
8. BadDays
9. RyansE30
10.Leave a comment:
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Things are in motion!
1. Zzyzx85 - 325i
2. OldDogNewE30
3. hotbascosauce - 318is
4. jrobie79
5. KyleHugo
6. TC Baur MD
7. Alberthype
8. BadDays
9. RyansE30
10.Leave a comment:
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Stan: On it.
below is a preliminary list of those interested. This thread goes back a while so please confirm if you are or are not interested and mention if 325 or 318.
If you want on (or off) the list, copy, paste, and edit the list in a new post.
1. Zzyzx85 - 325i
2. OldDogNewE30
3. hotbascosauce
4. jrobie79
5. KyleHugo
6. TC Baur MD
7. Alberthype
8. BadDays
9. RyansE30
10.
pavelgram,Kwon0569, sjmorris1: not sure if you guys are still interested. It was back in late 2024 when you posted in this thread lol.Leave a comment:
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Should we proactively get a list started so we can get to 10 buyers confirmed once Scott at Stromung is ready to produce?Leave a comment:
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MAybewonder if they would sell just the muffler with the pieces welded on so it fits the stock e30 hangers. I'm going 24v turbo, and the plan was to just hack up my OG group buy exhaust to work with the new engine, but I would rather just a brand new muffler instead of doing that
Leave a comment:
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wonder if they would sell just the muffler with the pieces welded on so it fits the stock e30 hangers. I'm going 24v turbo, and the plan was to just hack up my OG group buy exhaust to work with the new engine, but I would rather just a brand new muffler instead of doing thatLeave a comment:

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