Quote:
Originally Posted by hongounan
I'm also considering to have mine changed to HMS, the sound clip on YT is sooo breath taking.
Can I ask any other modification to the power train that you have done to your M? I don't want to touch the ECU at the moment and is choosing between the Cat-back vs. mids+muffler.
any advice?
Cheers
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My engine is stock (for now). The vid clip is of the cat-back only. The official HMS 1M video is mid + rear. My mids are to be installed soon. The mids give a slight power increase and make the system louder by about 10-15%, but might drone as there is no resonator like on n55 mids. Depends what you're after