Quote:
Originally Posted by Ivesy
Thanks a lot for the input guys. I have seen Si's with dual setups but I guess they are this strange one branch thing with the right hand section. Seems a bit fake to me, like it might only blow out of one section and be totally pointless.. So from what I'm hearing the battery box in the boot will scupper my plan for a true dual setup. I will see if I can find a local exhaust maker to help. Thanks again.
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There’s been some fab work like this:
https://www.zpost.com/forums/showthread.php?t=529926
Or to route this to the other side on one pipe
https://www.zpost.com/forums/showthread.php?t=687247
Scroll to the bottom of this thread and you’ll see another custom route which simply puts a dual tip on one outlet on the muffler and a 90deg bend on the other outlet then running the pipe to the rh side.
https://z4-forum.com/forum/viewtopic...28955&start=45
On the z4-forum uk based boards someone reworked a different battery and went through all the fab work to make a true dual but it was a good bit of work for what performance gained imo.
https://z4-forum.com/forum/viewtopic.php?f=27&t=10723
At the end of the day though from fab/to install and all headaches in between it’s more all show anyway. In a blind taste test you’re just not going to be able to feel the difference without doing more such as least a tune or F/I, full exhaust including headers. Look at the new Supra. There’s a shut off value when not in sport so only one side of the dual is actual spitting out fumes.
But the piping inside the main box on eisenmann and supersprint route to the other side so it’s not going to have a point where exhaust fumes don’t come out.
Here’s under pic of the eisenmann in this thread
https://z4-forum.com/forum/viewtopic...27265&start=15