I have HKS Hi Power exhaust 3", which is a bit loud (not for me though)..
so, what's the best way to lower down the noise inside the cabin? I dont want to change the exhaust yet because I like the sound and...
I have a pair of HKS GTRS Turbos to suit Skyline GTR for sale. These turbos are rated by HKS to support up to 400 PS each. These turbos have brand new catridge, so they are as good as new. They also come...