Yesterday I was driving to pick up my friend tato. On my way there my exhaust had its normal chainsawish sound to it. Now, my rear section is poorly bent and hits the axle on bumps and corners, when my 200 lb friend got in the car the axle hit on the exhaust. This happens alot and I have notices that the exhaust sound 10 times better with this load put on it...

How would I go about putting a constant load on the system, so as to get this good sound all the time, I think I could rig up some sort of brace or bar to torque the pipe slightly.

what do think?

 

Pour 100lb of lead in each compartment.

 

You may have an exhaust gasket leaking that is only in alignment with the pipes when your friend is in the passenger seat and the spring contract enough to lower the lead-in pipe into alignment with the muffler, or cats, or presilencers, if you have these.

The solution would be to take it to your local Midas Muffler shop and have them take a look at the pipe alignment. If they find that the gaskets are loose (there are ceramic rings that go between muffler pipes and muffler leads), then they can cut and reweld the correct mounts to get these to line-up.

This could also account for your 'chainsaw-ish' exhaust note, since, unless you've done some serious internal modes and are running straight pipes, most rotary exhaust has a slightly 'tinny' sound, but also has a low growl component at the rear muffler.

The only time I had a 'chainsaw' sound from my car was when the cheap header pipes that I bought through JC Whitney burned through at the exhaust outlet and was venting raw exhaust from under the hood. You can also replicate this sound by removing the air lead pipe from an 80 thermal reactor... HTH,