Quote:
Originally Posted by E92TiAg335i
Quote:
Originally Posted by F82KPowers
Quote:
Originally Posted by E92TiAg335i
Quote:
Originally Posted by F82KPowers
The exact setup was:
1) Two Magnaflow 14156 test pipes to replace the two secondary cats.
2) A Magnaflow X-Pipe 10791 to replace the resonator.
3) Used BimmerLink to keep the valves open all the time (it definitely droned between 3400-3900rpm with the valves open but never when closed). So I eventually ended up leaving it in the default setting because the drone at highway speeds got old. Then, as a substitute, I dropped the rear seats so the sound came through easier which was perfect for me (I still do this as it's the most underrated exhaust mod ever).
Not mine but here is the car with just the secondaries deleted:
Also, not mine but here it is with the resonator replaced with the X-pipe: |
Thanks for posting that. I can't seem to find that setup with downpipes though.
Was the drone really bad? I find that there is a tick (10-15% increase in down with my catless downpipes in sport plus, but it doesn't bother me yet. I also drive in efficient, comfort, comfort on the highway - so as long as the drone is non-existent in those settings, i will be fine.
Which setup drones more? Do you have downpipes? |
I had high-flow downpipes with that setup. There was no droning in efficient mode at all. But admittedly, it was pretty bad in Sport/Sport+ (in that relatively small 500rpm range) |
But no drone at all with the AA single? |
Nope. I haven't noticed any droning with the Single mid (keep in mind that I don't have catless downpipes so I'm not sure how droning changes with that setup)
It'll sound something like with the downpipe: