As my car is way to loud even for the road, has any one found a good DB killer, they feel is cost effective, and works,
without sapping power

if so, please share with me

All the effective DB killers sap power, they are simply a huge restriction in the exhaust.

Not that I know of.

I will be doing some testing this winter with an idea I got from the bike boys and this new stupidy short and loud GP exhaust fad thats seems to be going around.

To prevent spoiling the grammaphone look of them they put air spiolers (DB killer) INFRONT of the silencer. This is ment to really spoil the air and reduce noise by bouncing it off of the walls of the silencer. I have brought one to mod and will be giving it a go.

The bottom line is anything will reduce power. Its by how much.

If your car is THAT loud then try repacking with Accustafil or investing in a bigger silencer. At least your then starting on the right foot.

Ive re packed using Accustafil at least 3 times over the last 13 years, and im not impressed, as the stuff is shite, and just a hype

a bigger silencer is the last resort

steve

My experience of a DB killer was that it didn't really make it much quieter just raspy and boy did it kill the power.

Bigger exhaust or back off when passing the sound meters

Hi Steve
I have one you can borrow, its the one we used for the iva test
also have a db meter to check noise level.
Let me know.
René