Help me get below 90db.
Thread Starter
Registered User
Joined: Jul 2001
Posts: 367
From: Kusel, Germany
Help me get below 90db.
Crazy question isn't it? Our rules are changing to require a 90db test every year. The catch is that you cannot be over that at half of redline (2900 RPM)! Right now I am running Edelbrock shorties, no cat, and a 3" flowmaster catback. It is pretty obvious to me that this will not pass. I plan on putting v-band clamps on the section of pipe that previously housed a cat. This will allow me to quickly remove and install another section of pipe with some sort of silencer built into it. What pipe restriction would you suggest to temporarily install that will get me below 90 db at 2900 RPM? A cat...another muffler...a sock....
Thread Starter
Registered User
Joined: Jul 2001
Posts: 367
From: Kusel, Germany
A Corsa catback. It'll flow better than your Flowmaster setup, and it's pretty quiet.
From my research 90 db is about the volume of a lawnmower if that helps.
Super Moderator
Joined: Jul 2005
Posts: 9,507
From: Okemos, MI
Corsa, Magnaflow, and Borla all sound great, and flow great. Dynomax flows great too. I haven't heard it, so I can't tell you how it sounds.
If you're really stuck on your Flowmasters, you could get silencers to put in the exhaust tips. I'm not sure exactly how they work or where to get them, but I've seen them before. A friend of mine autocrosses a WRX, and when he's racing on a track with noise regulations, he puts in his silencer and the car drops like 20db.
How loud would you say your car is now?
Thread Starter
Registered User
Joined: Jul 2001
Posts: 367
From: Kusel, Germany
If you're really stuck on your Flowmasters, you could get silencers to put in the exhaust tips.
thats ****in retarded