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Went through 5 cats on my 19 Roush Stage 3 in only 14,000 miles and I had enough. Roush 2650 is a poorly designed blower for Gen 3 running too much boost. Never again.

VMP Performance Wengerd Tuning Palm Beach Dyno

Get the PMAS 120 Intake, 79mm pulley and if you can find a used VMP Twin 67 Throttle Body you’re good to go. You’ll probably lay down 670-680whp on good 93.

Once your 3/36 from Roush is done there is no other coverage available. If you buy a Ford ESP it will not cover anything powertrain related. Your cats are covered regardless for 8 years.

May 2020 till February 2022 when I traded it in.

3 on the driver side and 2 on the passenger side

When I was going through the cat saga with Roush they told me a lot of times the P0420/P0430 codes are tune related and not necessarily a cat failure that they were working on a fix. Roush would opt to replace the cats knowing there is a good chance the cats were fine. Never had issues with the...

I went through 5 cats on my 19 Roush Stage 3 in 16,000 miles before I got rid of it. I strongly believe it’s more Roush tune related. If I kept the car I was ditching the Roush tune.

Ahh the beauty of the quirky shifting of the 10R80 and the Roush tune lol.

That’s what I did. My 19 RS3 was a beautiful car and I got fed up and bought a 21 GT500 and there is no comparison. If you get a chance to drive one you’ll see what I mean. My wife even noticed the difference. From the powertrain to the suspension to the insane brakes and the overall ride it’s...

Besides the cat issues and cooling inefficiency, trying to find a dealer and how slow things move to get warranty repairs done I would strongly advise against anyone throwing this set up on. Just not worth it. Any other kit with a tune not ragged out from a reputable company you will have a nice...

If I kept my car after going through 5 cats on the Roush calibration I was 100% blowing the warranty and going to get a VMP tune and a upgraded intercooler brick from Jokerz Performance. Roush should be using the Jokerz brick to address the cooling deficiencies. There is no way they don’t know...

I had a 19 RS3 like you and have great experience with this issue. I never experienced any drivability issues it just threw a P0420 or P0430 Cat Inefficiency Code and took it to the dealer. After they spoke with Roush they replaced the cats. I had the drivers side and passenger side cats...

VMP Performance These were the upgrades I had done to the 17 Roush Phase 2… FIC1000 injectors 79mm pulley Pmas 120 intake Reische 170 Thermostat VMP Triple Pass Heat Exchanger NGK 6510 plugs Upgraded VMP Intercooler Pump 679 on 93 720 on 100 octane My 17 was a manual transmission so it dynos...

The 2300 is a badass blower and loved it on my 17. It outperformed the 2650 and took to upgrades quite easy. I was running at 679whp on my 17 Roush 2300 ion 93 and right around 720whp on 100 octane and was a great set up. Not a single issue or code for the 15,000 miles I had it.

Boy oh boy I do not miss the issues with the 2650 Roush blower having constant cat codes. I really thought they would’ve redesigned the 2650 to an inverted blower like everyone else and be more competitive with potential to turn it up. I was a big Roush fan but going through 5 cats on my 19 RS3...

My favorite Mustang color ever.

Do you tune 2020+ GT500’s?

My 19 Roush had the 2 original cats and the 3 replacement cats. That’s 5 total which is problematic.