youngbeezy

I just got my HKS Hi-Power Exhaust system installed on my 06 GS 300.
As i was driving home, i notice a very good sound until 3000 rpm, then when it goes higher the sound just dies away and i only hear my engine... Also when i hit redline on my revs, the exhaust makes a choppy noise, like CHOP CHOP CHOP CHOP really fast. LAstly, as i parked in my garage tonight i noticed a very foul smell coming from my exhausts. Is this normal, do i just have to let the exhaust settle in or break in with time to it's new environment?

LiCelsior

iTrader: (32)

from what ive heard, with the newer cars the engine drowns out the exhaust past 3-4k rpms. and the smell ur getting is probably like a rotten egg smell? thats from your cats.

youngbeezy

god thats annoying! i paid $800 for this exhaust and i cant even hear it at 3-4K RPM. Whats the point of making exhaust for this car if it drowns out? so what am i supossed to do? take out my cats? take out the resonators? get a new midpipe/ other parts? new intake? The system was correctly installed, it was just a bolt-on i dont see why it's doing this or making the smell..

designo

iTrader: (6)

Buy Invidia Mid Pipes!

Mesca

iTrader: (28)

+1 or Megan's! IMO, the Invidia's are a little bit raspier than I would like it.

designo

iTrader: (6)

Aha, you have a V6 right? If yes, then "rasp" is something you must live with when you un-resonate or un-restrict your downstream exhaust.

I have a V8, no rasp at all even if I wanted to!

blacksedan

iTrader: (4)

I'm trying to achieve the g35's stock system. If I replace the mid pipes (deleting the resonators) will that do it? I don't want anything loud. Just trying to get that little rumble like the g35's.

swtjlsy

iTrader: (6)

lexus are been designed to stay quiet unless you replace everything for the header back. We all on here know it more for looks than and thing else. Most exhaust will not go higher than 92-94db in sound levels.