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most of the gains will come from replacing the factory Y-pipe. This exhaust is very loud. It is also quite loud inside the cabin without the silencers in most of the sound coming from droning. The raspy rattle only comes on from about 3000-4000 rpms under WOT. Other then that, the exhaust has a very deep aggresive sound.
its very loud at first in the cabin but ive had it on for 2 weeks now and its tamed down quite a bit...def my fav exhaust out there for the z though...the rattles can get a lil bit old but if i get really tired of it ill dynomat my trunk or sumthin....but i do feel a couple extra whp from this exhaust...i know koji dynoed the rsr exhaust and it said it gained like 15whp...and the topspeed is the same exact design as rsr so i would say a good 10whp to me...if this tells you anything all i have is this exhaust with jwt popcharger and i ran a 14.1 at the track and that was shitty launch with tire slip in 2nd and horrible driving.
Mine is very loud from 2000 to 2500 rpm inside the cabin. I do have question for those who have it, my exhaust is hitting the boomerang support . Is there anyway to make it not touch it?
i got it and I absolutely love it. it does rattle a little bit between 3000-4000k but I still absolutely love it. it is great. i would definately recommend it. if you have any questions just pm me.
check ebay....i know they have it for like 300$ pretty cheap exhaust i was even thinking about going with it because its very loud and brings out a good note in the 350z...or if u wanna spend alittle bit more money go with the invidia....also very loud almost same design...