DSX Lid Whine Results

[iriv23]

Background: Sold my Durango Hellcat and bought a CT5-V Blackwing back in December. My favorite car I’ve ever driven with ONE problem… not enough whine. My favorite cars have always been hellcats purely because of the sound, and I miss the loud whine my Durango had (with a JLT intake).

After tons of research I finally pulled trigger on a DSX lid and did the install today. Attached are before and after videos with the hood open and some revs in neutral while coasting in sport mode. I do have custom magnaflow mufflers as well.

From the outside the whine is about twice as loud, but I still can barely hear anything from the inside. I do hear it slightly at higher RPMs. The exhaust is definitely partly to blame.

Looks like porting the supercharger + pulley is next. Didn’t want to get void my warranty but that’s how much I want the supercharger sound… The search for the louder whine continues!

 

[iriv23]

Oops, forgot the before and after. Here it is: Supercharger Whine Before And After

 

[jbawden]

Don't count on the Kong port adding much, maybe 10-15% more and mostly at high RPM. I'm know I'm getting older when I like the subtle whine and stock stance of the 5BW, its perfect.

 

[hawk02]

I’m not into my car sounding like a bunch of angry bees. I think the Cadillac team did a nice job balancing luxury with performance. The exhaust sound should be the main focus under load and not supercharger whine. But that’s me.

 

[Sully]

I too wanted to hear that SC more then it came stock. My MPI lid gave me more then enough whine, especially under load, very pleased with it. Combined with a green filter and Corsa exhaust, almost negated it as exhaust burble is next-level crazy.

 

[coffee_time]

Voiding a warranty on a six-figure car just for a sound is wild to me.

 

[PrimeTime]

I have to say I agree with you @coffee_time, the powertrain warranty is just too important to me. Rather have it than not.

That said what "bolt ons" mods would be considered "acceptable" under the cars powertrain warranty? If any? Does a new LID void the warranty?

Does a bolt on catch can, which to me performs an important task in the performance and condition of SC, its cooling bricks void the warranty? IDK?

 

[Sully]

Voiding a warranty on a six-figure car just for a sound is wild to me.

Neither lid nor exhaust voided my warranty. When my transmission was replaced (see Thread 'Sidewall Bump.. (morphed into Transmission replacement)' the dealer initially took notice of the lid, initially refused to work on it because they said I installed a “blower”, which was comical.

But after explaining that the BW came with the blower (not sure why I needed to explain but I chalk it up to the service advisor never seeing a BW) and that the lid was primarily cosmetic, they looked it up, confirmed, documented it, and then proceeded forward with the transmission diagnostic and ultimate replacement.

Obviously, once you start messing with the pulley size, etc. the level of burden will greatly increase. But at the end of the day, they still have to prove that the mod was the source/contributing factor of the failure, if one were to occur. Mag/Moss act is pretty clear with that.

 

[hawk02]

I think everyone has this misconception that for any modification GM has to be prove that it caused the failure to deny warranty. The keyword here is “Modification”. You install a Fram oil filter instead of an AC Delco and the oil pump goes out, then yes, GM has to prove that the Fram oil filter did not meet their specifications for oil filters before they can deny warranty coverage. When you install a catch can, however, you are modifying and changing the original design of the PCV system. GM doesn’t have to prove anything because the engine is no longer operating in accordance with how it was originally designed.

 

[PrimeTime]

On the subject of warranty coverage, if I ask for the replaced parts from my car under warranty from the dealer should I get them? Can I get them?

 

[PrimeTime]

Basic parts. Get what I'm asking? engine, no deals...

 

[Exia]

Unfortunately its a Caddy, it has a lot of sound deadening. Which sucks because I think a big reason we buy these cars is the V8 but GM goes and adds a bunch of deadening to mute it.

The LT4 has always had very little whine, with some simple fixes like the lid, but its also a Caddy and has more sound deadening then the Chevys that usually have the LT4.