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You might have a leak around the injectors. Maybe the one you replaced. It could also be your IAC valve.

This video can help with replacing it:


https://www.youtube.com/watch?v=taN8tZRt4g0

Check the codes and check compression.
If you are running fuel rich, your cat converter can burn the extra gas and burn up stuff inside.
Just a thought.

I got the same thing for my mustang and yes, especially during long trips the sound is pretty headbanging.
I suggest you go back to stock. I assume you kept the old setup?
I know it was probably...

Forget about the Roush SC. They are very overpriced and not worth the cash. Procharger, Paxton are both good value for the money. I don't know if you can get one installed for your price range, but...

This site here will give you what you need to find out what tranny you got: https://chris66dad.tripod.com/id38.html

Upgrading just the speakers will give only a slight improvement in audio quality.

You need to upgrade the stock amp. And if you have the dough maybe even the head unit. Best bet is one amp...

You might just have old struts that need replacing but if they are still fine, you can buy a kit. Eibach sells a kit:
...

I have a 2020 GT and I have added a couple small upgrades but am considering the ON3 turbo. Anyone have any opinions on this kit? It's not as expensive as some others but seems to look decent for the...

Hi everyone. I have a 2020 GT CS with a couple little upgrades and she's my baby. I am glad to join the forum here and hope to maybe get some answers and possibly help others out if i can. Let's get...