Ah ha - this is exactly the feed back I was looking for. Looking at some of these videos they either say they’re using high flow cats or decats. I think this is the missing element here, And you’re not getting that higher pitched shrill with out reducing the cat restriction. Thanks.
Agreed. I wish I had taken videos of WOT with the OEM cats vs the hi flow cats, but unfortunately, I didn’t. Trust me when I say that the OEM cats with the Kline produced a lackluster pitch and tone. Very similar to the Capristo, which was nice, but lacking that X-pipe “zing” I was searching for. Hi flow cats opened it RIGHT up
For completeness, and reference for others (and before I change anything else). This is a euro spec 360, completely standard. And that’s my wife revving the thing, not me
I did Supersprint 4-1 manifolds, high-flow cats, and a Stradale/F430 exhaust with stock valving setup. Car is reasonable driving around and properly screams when you get on it.
Agreed, also running Sline with stock headers and cats, already sounds awsome AF, but i still want to do headers and a cat delete (or 200cells not sure yet) in the future for that extra bit
I have put headers on several cars from old camaros, to corvettes to my f430. I can say that the headers make more of a difference for sound pitch and frequency than any cat back system does. With the ferrari, especially.
That’s an interesting perspective. I never had the 360 with the stock headers. But I have had the same Tubi headers between 4 different catbacks now, each with different combos of OEM cats, test pipes and hi flow cats, and and I can say without a doubt that each cat back had its own characteristic. Straight pipes and hi flow cats each increased the volume respectively, and allowed the true intent of the cat back to show through, but for me, the different catbacks are what made the biggest differences in volume, pitch, tone, etc. They’re the real defining personality of the exhaust, imo. But again, I never experienced the stock headers. I’m not sure what all my combos would be sounded like with them in place.
As mentioned earlier in this thread, it's the headers. I have a 2001 euro spec with the factory headers (as opposed to pre-cats) and even with the stock suitcase muffler, it screams. Even at idle, my neighbors have complained from the cold start. My friend has the same car in a US model and it's a totally different sound. I would like to add the CS exhaust but, honestly, I'm afraid to. The HOA simply will not tolerate it.
You are 100% correct. It's all about the speed of sound - the time it takes from sound of detonation to go from the block to the exhaust tip. That's where the tube length comes in and how those lengths are arranged between the cylinders (tuning). I learned this with my DB9. A cross-plane engine whose sound pitch remained unaffected by a few exhaust setups I had. I refused to pay the $12K plus install and subframe removal for the Velocity SS headers. That was until I heard them! It transformed the car into an F1 race car. That smooth, trumpeting sound coming from a Ford-derived V12 was unmatched. With headers, you can create any sound you want using the right tube lengths, but it takes expertise. The cat-back setup will affect how much the pitch is maintained vs the volume level. The harder the metal, the more natural the pitch. Aluminized metal (typical cheap pipe bender's material) will give a cabin drone along with a deep sound. It's easy because the metal is softer so it's easy to bend and few welds are needed. Stainless steel is harder, requires more welds due to it's stiffness, so it will crack if it's bent to sharply, but it does a great job maintaining sound. Titanium is even harder and will really make the car scream but it required at least double the welds as stainless steel.
Yes, I think I have one at idle. I need a drive by vid, which I will try to get shortly. I only know what that sounds like from the echoing on the city streets and the birds taking flight from the trees lol.
The supersprint headers I think give the best of both worlds, true 4-1 collector, car has somewhat of a torquey muscle car grunt from 3-4.5k rpm and wails like a banshee above 6k rpm.
Headers make a Difference for sure, but the cat back makes a huge difference. Personal taste, but here was my experience. Tubi headers with the CS muffler was nice Tubi headers with the Sline exhaust was high pitched, but loud, and sounded blah and not clean below 2,500 rpms. Drones too. Tubi headers with Sline exhaust with their valved muffler system was no longer as high pitched when open, and was not really much quieter with the valves closed. Drones too when open or closed. Sounded ok at low rpms. Tubi headers with OBX exhaust sounded like the CS exhaust Tubi headers with the Kline Inconel exhaust is incredible. Highest pitched and even sounds high pitched at just 2,000 rpms with a metallic ping starting at around 2,500 rpms. Sounds nice and clean at below 2,000 rpms.
This was my experience. The caveat for me is that I tried it with OEM cats and was underwhelmed and a little disappointed. I switched to the hi flow cats the next day and was blown away! But again, aural observations are subjective, and not every person will like every combo and end result.
I have a CS exhaust on my car, and my opinion is the best sounding exhaust on a 360, absolutely love the sound, especially when your on it hard
Have you heard an inconel x pipe system on the car in person? The difference and how much better it sounds is shocking. In person.
All I want is a stainless steel X-pipe. No mufflers. I met a custom fabricator who claims he can do it. We'll see.
I ran Tubi high flow cats with both Sline versions and then switched to factory cats as well with the Sline. I noticed it just was a little quieter. Everything else was still the same including the drone. Main thing was I got rid of the high flow cat smell though that I simply can't handle.
