I did remove the midpipes to rebuild them , going to add 2 resonators and a xpipe.
I didnīt realise that I was going to lose so much power on top my guess app 40 hp.
+ a lot of throttle respons
Did gain some torque in low and mid rpms .
So if you want some more power on top and better throttle response, go catless
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M3 E92 ESS VT-625
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