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Much appreciated Patrick!

Nice work finding the problem John!

There are two vacuum lines that commonly get missed when people replace their throttle body and/or spark plugs. We have pictures of both at the bottom of the spark plugs page of our website. The one that's toughest to see is the one most people miss...

I doubt it.

Pretty much the same, yes. However, the CT5-V Blackwings will continue making more power all the way to redline. So you may want to pull to 6,500 rpm.

Put the car in Track mode. Disable Traction Control. Pull from 2,500 to 6,200 rpm. Make sure the hood is open and there are as many fans as possible cooling the engine. We recommend 7th gear for A10 cars. 5th or 6th gear can also work if your local dyno shop prefers.

We just posted a new and improved offer here: https://www.cadillacvnet.com/forums/threads/who-wants-ct5-v-downpipes-for-free.5068/

Tapout Tuning is currently seeking a CT5-V volunteer who is interested in aftermarket downpipes. We will need to have your car for three to four weeks at our manufacturer’s facility in Streetsboro, Ohio. They will be using your car to finalize the design and ensure perfect fitment. When you...

Some seem looser than others. It's not a problem unless they are leaking fluid.

Coming soon. Please stay tuned!

Responded!

We’re currently searching for a volunteer to have the first ever CT5-V Blackwing cat-back exhaust system. You will need to have a CT5-V Blackwing (with either A10 or M6 transmission), and still be running the factory catalytic converters. You would need to drop your car off near Cleveland, Ohio...

Yes, those TurboSmart wastegate actuators will work with some minor adaptations. We used them on my 2018 ATS-V a few years ago when we switched over from vacuum to boost controlled actuation. I don't believe these will provide any noticeable or measurable performance improvement over the...

Best fits will be P275/30ZR19s on the front and P305/30ZR19s on the rear.

Tapout Tuning has these in stock for a fraction of the OEM price: https://www.tapouttuning.com/product/tapout-tuning-ct4-v-blackwing-carbon-fiber-rocker-extensions/

Unfortunately, we are still struggling with this. We have the manufacturer ready to go on these, but there are a couple complications. 1. They need the car for four weeks, and most people don't want to give up their cars for this long. 2. We need a RWD car so we can do before and after dyno...

The ATS-V and CT4-V Blackwing LF4 engines are nearly identical. They make the same power from the factory, and they also respond to mods similarly. https://www.tapouttuning.com/ct4-v-blackwing-dyno-rankings/

We have sold hundreds of the Green filters, and this has never been an issue.

I'm bringing this thread back to the top, since we get requests for these downpipes almost daily...

My direct email address is ScottC@TapoutTuning.com.