personally, "I" don't like the sound of the Solo exhaust, but that's just me....Great info-Thanks. Wonder if the Solo exhaust has the drone problem? Will do some research on tips as well. What did you end up doing, or do you still have the magnaflow system and are living with it?
That looks like a 4" round x13" long canister. That is bit too small of a chamber to diffuse your exhaust noise. Resonator placement is important. Generally the primary resonator would be right under or aft of the driver's seat. This ensures the unwanted frequencies are taken cared off earlier. I'd suggest Vibrant UQ series or browse Solo's many spiral chambered resonators.a resonator in the middle did not solve the droning problem from the Magnaflow system on my coupe. i remember once-upon-a-time someone on the forum said they put resonator tips on the exhaust (don't know what brand of exhaust or resonators) but supposedly it solved the drone problem.
Bill View attachment 111966 View attachment 111967
I too thought it might be some form of resonator too. But the size is too small for an effective one if it is. While I didn't cut my GXP exhaust up, I did run a borescope in to check out that 'lump' recently. It's just a boring connector chamber. There's no perforations found typically in a resonator. Maybe a pipe strengthening device or something to slow down the exhaust velocity? No idea. Was a bit anti-climactic.we had a big discussion as to whether the GXP exhaust would have a drone on a 2.4 coupe (the turbo on the GXP would surely modify the exhaust frequency) and we noticed a 'lump' in-line in the GXP exhaust which resembles a resonator but no one cut one open so we don't know if or what was inside
the 'canister' is a Moroso spiral wound resonator supposedly to be used in racing applications where too much 'noise' is not allowed, and is placed midways in the car.That looks like a 4" round x13" long canister. That is bit too small of a chamber to diffuse your exhaust noise. Resonator placement is important. Generally the primary resonator would be right under or aft of the driver's seat. This ensures the unwanted frequencies are taken cared off earlier. I'd suggest Vibrant UQ series or browse Solo's many spiral chambered resonators.
I think 3" pipe is sub-optimal for a 2.4NA. Your exhaust gas will be travelling at a lower velocity due to the large pipe.
Note that a stock GXP is equipped with 2.5" exhaust which is considered not a power robbing unit. I think the stock muffler is restrictive however.
the first picture is the projection of the OEM single exhaust tip for a 2.4 NA, no drone... the second picture is the projection of the Magnaflow dual exhaust tip, drone... projection seems to be a bit more for the Magnaflow but not as much as car above.to get rid of droning cut the tops off and add some pipe and then weld the tips back on. get the tips out past the rear fascia. This is a Magnaflow exhaust, you see how far the tips stick past the rear fascia.. that's what you need to do.
View attachment 112000
The drone sound is caused by the sound getting underneath your car and it ends up echoing into the passenger cabin. By making sure the tips extend past the rear fascia far enough the drone will go away. Cars you see that have performance exhausts and the tips are even with the back fascia is because the tip is 100% surrounded by the fascia. You can do that with that style of fascia and end up with minimal drone.