[Bender]

Hi Psycho. Wow!!!! 130db is loud for a unloaded engine. I would check the meter or area it is being tested. It should be in an open area with car on a flat surface. In my rally years. My 2l escort with all the fruit, 2 1/2" exhaust and about 10" long large straight through muffler would be under 96 at 4000 rpm. Supercars are under 96db under load with meter in the middle of the track. So 130db is loud. I checked your photos. Nice build mate. In one of the photos you have a tube with aunger plates welded to it and some steel wool wrapped around it. Is that your muffler mate? I may be totally off the mark but if you are trying to copy the Gonzo mufflers. They were a bit different to that. On the gonzos the aunger was a full spiral with the tube welded in the middle. That was then mounted in the muffler with no steel wool. Theory being the exhaust travelling around the spiral would have a different speed to the exhaust coming through the centre tube. Canceling out the noise vibration. Unfortuately the noise always sounded flat and the centre would rattle. SBR and Triple 8 ran that style for a while. The cars always sounded terrible but under the limit. I have built steel wool filled mufflers before and recently chatted to an exhaust guy in Qld. He was saying use rock wall or dry wall. One of the 2. Lol. He said it is not as tinny as the steel wool muffler. If you are interested I can check again to see what he is using. Hope this info helps with your build. Sounds like you are close to rego. Bender