Here are some photos to liven up the thread.
This is the center resonator that I put in. It’s bigger than it looks. It’s an oval that is about 9" wide and about 4" tall. With it installed, it lowers my ground clearance a little, but I’m very happy with the performance of this part. It’s straight-through with perforations in the pipe, so it flows nicely, but also helps tame the noise shrew!
Next, here are the single-chambered mufflers that I’m planning to use. Either the centered ones, or the ones with the off-set output, depending on which will fit best. These mufflers aren’t straight-through perforated pipes. Instead, they are a single chamber with two barrier-like pieces of metal welded in them so that the exhaust will have to flow around the barriers. They will replace the two louvered glass-packs that I have in now which I suspect interfere with the exhaust pattern, making them more restrictive than I’d like.
More over, with the big resonator at the end of the center pipe, that should get rid of drone, and take off the rough edges on the exhaust tone without restricting flow. Also, if I’m lucky, they may provide a “scavenging effect” at certain RPMs, which would mean that in that RPM range, the negative pulses created by the resonator could actually help increase exhaust flow out of the engine.
Following this resonator and the factory Y pipe, I plan to install two single-chambered mufflers – one per side. These are off-brand stainless steel mufflers that have minimal restriction, but also would tend to be rather loud. I’d expect that they should be somewhat similar to the flowmaster series 10 mufflers, which are LOUD. Following the mufflers, I am keeping the two large factory resonators at the rear of the car that connect to the exhaust tips.
I’m thinking that with the large resonator, followed by true-mufflers and then the factory resonators, that I should have a high-flow system that makes a nice growl without any droning and without being obnoxiously loud. I guess we’ll see!
If I can’t fit two of those (either style) due to space constraints, then instead of the factory “Y” pipe, I’ll use just one of these:
But I’d prefer to have two mufflers, one for each pipe, because I believe they will be less restrictive and provide more noise suppression than a single muffler with one input and two outputs.
Feel free to comment if you have any thoughts. I’m planning to have the two glass packs replaced with two mufflers later this week. More to come… -Phil