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CT4-V Caddy-Issues no longer in business?

Cadillac CT4-V model

nix6speed

Active Member
Joined
Jan 20, 2026
Messages
41
Location
Houston
I tried calling their number and it's disconnected. Submitted an inquiry and no response. Their FAQ states the following.

Do you have a kit for CT4-V Blackwings or XTS's?

Not yet but if you’re near Houston, TX, we’d gladly work with you to develop a fitment for either car (or any other LF4/LF3 vehicle). It usually takes less than a day to revise, implement, test, and validate a new fitment.

I'm in Houston and wanted to offer up my CT4 as a guinea pig for the intercooler upgrade kit. Then again maybe these cars don't have the air bubble issue like ATS-Vs?
 
What's your drug, track driving or drag racing?

I'm starting cooling upgrades with this cooling manifold adapter with hose kit. Supposedly without them one side runs hotter than the other. These split an area of merged coolant flow into separate loops for each side of the engine. These are $329 from WeaponXMotorsports.

Also doing their increased flow volume water pump for $320.

I'm starting cooling upgrades with
Manifold adaptors with fitting and hose kit.webp
 
What's your drug, track driving or drag racing?

I'm starting cooling upgrades with this cooling manifold adapter with hose kit. Supposedly without them one side runs hotter than the other. These split an area of merged coolant flow into separate loops for each side of the engine. These are $329 from WeaponXMotorsports.

Also doing their increased flow volume water pump for $320.

I'm starting cooling upgrades with View attachment 34236

It'll get tracked in the fall since Houston has brutal summers. Plus cooling improvements should be the first focus on forced induction cars before adding power. Speaking from experience.

Is Weapon-X the only vendor making those? They had a terrible reputation years ago when I had my 6th Gen. Always advertised unique parts but none of the reputable shops used them. Also took forever to deliver actual parts or never did.


https://www.**************.com/threads/did-weapon-x-motorsports-go-out-of-business.1159477/

 

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