Hey guys,
Me again with the GTHaus Exhaust.
Just got the berk HFC added on to the full GTHaus system on my 2015 Nismo Z.
I went through 3 phases of my vehicle's exhaust upgrade: GThaus Muffler add-on only, then Ypipe + Midpipe add-on, then the berk HFC add-on. Here is my impression summarized in each phase (berk HFC add-on is new).
GTHaus Muffler only: Sound changed, volume increased by a lot. Some burble and sounded really nice. No drone.
Muffler + Ypipe and Midpipe: Sound doubled. Sounded even better. Still comfortable driving noise. Perfect as is. No drone.
Link to video of this stage of my vehicle:
https://www.facebook.com/GTHaus/vide...?hc_ref=SEARCH
Berk HFC Add-On: Sound doubled again.... to the point of stupid loud.... No drone if throttle isnt pressed. A lot of rasp above 3k rpm. TBH... the vehicle is now difficult to drive without being abnoxious. Check engine light is now on, and the shop that installed it damaged the clutch line in the process of removing the demon bolts. Had to get the clutch line replaced.
My honest take may sound displeasing however, I am actually currently satisfied with the Berk add-on.... I do like that it is stupid loud but I am slightly concerned that I may get rid of it (ex: if I run into too much trouble with the police). The CEL hopefully will be removed with some modifications to the O2 sensors and an ECU reset.
Hope this helps anyone thinking about these upgrades!