Please see the below about tips:
Stromung cat back Group Purchase
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Pricing info:The group buy discount will be just for the E30 325i systems, Stromung can't offer a 318i system right now
Standard vs. quietThe list price for the 325i system is 799.00.
7-10 systems -10% off list (719.10 + shipping)
11-15 systems -15% off list (679.15 + shipping)
exhaust tips:[Scott] recommends the standard muffler for those of you NOT driving a convertible as feedback from customers states they would not want it quieter.
updated list:
325i list:
1. Zzyzx85 - 325i, standard
2. OldDogNewE30 - 325i, “Cabi”/quiet, double wall tips
3. Alberthype - 325i, standard, angled double wall tips
4. siggy - 325i, standard, straight double wall tips
5. 88Sedan - 325i, standard, slant tips
6. KyleHugo - 325i, straight tip, standard
7. TC Baur MD - 325i, standard, angled, double wall tips
8. hank6711 - 325i, standard, angled double walled
9. E30-TourZing - 325i, standard, straight double walled
10. calvino - 325i, angled double walled for MTech 1, standard
11. sjmorris1 - 325i, standard - slanted - perforated tips - dual wall
12. RyansE30 - 325i - standard, Mtech2 fitment, single wall angled/mitered cut tips
13. afterafx - 325i, standard
14. Matt J. from SoCal E30 on FB - 325i, standard
custom:
jrobie79 - muffler only?
318i list (keeping this around):
1. hotbascosauce - 318is
2. AmosCake - 318is
3. Kyle90 - 318is - standard muffler, MTech 2 fitment?Last edited by Zzyzx85; 03-09-2026, 01:20 PM.Leave a comment:
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Pricing info:The group buy discount will be just for the E30 325i systems, Stromung can't offer a 318i system right now
i've tagged people in the list below who need to confirm their participation and select their choices:The list price for the 325i system is 799.00.
7-10 systems -10% off list (719.10 + shipping)
11-15 systems -15% off list (679.15 + shipping)
- 325i or 318i (only 1 pending; again, this group buy will be just for the E30 325i systems)
- standard or quiet muffler design
List updated as of 6PM Pacific:[Scott] recommends the standard muffler for those of you NOT driving a convertible as feedback from customers states they would not want it quieter.
pending:
jrobie79 - pending muffler only - 325i or 318i?, standard or quiet?
325i list:
1. Zzyzx85 - 325i, standard
2. OldDogNewE30 - 325i, “Cabi”/quiet, double wall tips
3. Alberthype - 325i, standard, angled double wall tips
4. siggy - 325i, standard, straight double wall tips
5. 88Sedan - 325i, standard, slant tips
6. KyleHugo - 325i, straight tip, standard or quiet?
7. TC Baur MD - 325i, standard or quiet?
8. hank6711 - 325i, standard, angled double walled
9. E30-TourZing - 325i, standard, straight double walled
10. calvino - 325i, angled double walled for MTech 1, standard or quiet?
11. sjmorris1 - 325i, standard - slanted - perforated tips - dual wall
12. RyansE30 - 325i - standard, Mtech2 fitment, single wall angled/mitered cut tips
13. afterafx - 325i, standard
318i list (keeping this around):
1. hotbascosauce - 318is
2. AmosCake - 318is
3. Kyle90 - 318is - standard muffler, MTech 2 fitment?Leave a comment:
-
Pricing info:The group buy discount will be just for the E30 325i systems, Stromung can't offer a 318i system right now
i've tagged people in the list below who need to confirm their participation and select their choices:The list price for the 325i system is 799.00.
7-10 systems -10% off list (719.10 + shipping)
11-15 systems -15% off list (679.15 + shipping)
- 325i or 318i (only 1 pending; again, this group buy will be just for the E30 325i systems)
- standard or quiet muffler design
[Scott] recommends the standard muffler for those of you NOT driving a convertible as feedback from customers states they would not want it quieter.
pending:
jrobie79 - pending muffler only - 325i or 318i?, standard or quiet?
afterafx - 325i - pending pricing info, standard or quiet?
325i list:
1. Zzyzx85 - 325i, standard
2. OldDogNewE30 - 325i, “Cabi”/quiet, double wall tips
3. Alberthype - 325i angled double wall tips, standard or quiet?
4. siggy - 325i, standard, straight double wall tips
5. 88Sedan - 325i, standard, slant tips
6. KyleHugo - 325i, straight tip, standard or quiet?
7. TC Baur MD - 325i, standard or quiet?
8. hank6711 - 325i, standard, angled double walled
9. E30-TourZing - 325i straight double walled, standard or quiet?
10. calvino - 325i, angled double walled for MTech 1, standard or quiet?
11. sjmorris1 - 325i, standard - slanted - perforated tips - dual wall
12. RyansE30 - 325i - Mtech2 fitment, single wall angled/mitered cut tips, standard or quiet?
318i list (keeping this around):
1. hotbascosauce - 318is
2. AmosCake - 318is
3. Kyle90 - 318is - standard muffler, MTech 2 fitment?
Leave a comment:
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Standard muffler for me please. I'll keep the angled double wall tips if availableLeave a comment:

Leave a comment: