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Originally Posted by Banzai250
Quote:
Originally Posted by TheMidnightNarwhal
Quote:
Originally Posted by gurusan
Yep, I understood that from another thread which is why I went ahead with the 7"  It's now sitting in my garage waiting for some day when I'll have time to install it. |
This will probably be me lol. I will only install when spring is back and I need to look at how dirty my intake valves are. |
For what is worth, I have been running ARM MOTOSPORTS step 5 inch on my fbo 335i , easy to install/ direct bolt on . Very happy with the results 👍 |
I put a 5" Wagner on my 'is. Took bumper cover off, which was simple, and trimmed a plastic tab that served no identifiable purpose. It was about .75" x 1" and I cut it with large wire cutters. You don't need a Dremel. The tiny area that was trimmed is completely invisible after installation. Wagner is working great with Stage 1+, which is as far as I plan to mod. You mentioned coils. If you need them, do that first. Maintenance should always come first.