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I have a 21 GT with pp1 factory wheels. I'm a fan of the Pirelli P Zero tires as they are providing great traction (when there's tread lol). 275/40/19 101Y 220treadwear. I usually run them at 32psi when warm which is lower than factory specs recommend. Factory says 32psi cold. The centers of the...

So far I've tried the Ford performance tuner and the Lund LRX. They both fail to have a decent trans tune. Who actually makes a good trans tune that's performance oriented?

I'm so upset right now. I was tightening the bolt after replacing the dead battery and it snapped right off. What is the best method for this one? Got a link to a thread? Sorry, im just so frustrated.

Hey all, It's like 100 degrees lately and I'm wondering if there are any radiator additives that work i could add. I used to use water wetter, but that was like 20 years ago. Got any helpful tech on this subject?

My 21 GT has had a stumble/misfire since I've owned it at 3500 miles. Basically brand new. Car is flawless. Automatic 10 speed. Can feel it studder bad at 80mph in 10th gear. Its done this since i bought it. I put a tuner on it hoping it would fix the problem. Lately its been getting worse and...

I don't know how to load a stock tune on this thing. I did everything correctly a few months ago. Now the car is at the dealership troubleshooting a coil issue and they want to return it to stock before troubleshooting it. They had it all day and then call me at 4:55 pm to say the mechanic needs...

I've been having this problem since I bought this car with 4k miles. Now it has 17k. It was happening around 2000 RPM on the highway. It feels like it was down a cylinder and then comes right back. Lately it feels like it loses an entire Bank of cylinders. I finally got codes off of it. No check...

I am putting spark plugs in my 21 GT and am Ohm testing the coils just for reference. Between the pos and neg, I got .3 Ohm. Nothing between pos and plug contact (output) and nothing between neg and plug contact.

I was looking today and the number that I saw people listing as a colder plug is actually the same ngk #7 heat range, just a different gap. Looking for a colder plug in ngk iridium please.

I was having some intermittent issues with my 2021 10r80 shifting into 3rd and 4th and sometimes slamming into 5th. I decided to order a trans filter, gasket and some valvoline ULF. Got the car jacked up and onto jack stands high enough so I can fit under it and still move (which was a PITA even...

I'm wanting to change the factory trans fluid in my 10 speed trans. What is the best oil and how much does it take? Any tips on changing it?

Hello all, I'm wanting to know if anybody has looked up the specs for a larger oil filter than the fl500s. I usually like to put a longer oil filter on just so it has more capacity flows better more media resistance Etc. Does anybody have a part number of a bigger oil filter with the same...

Hello all, I just installed a gt350/gt500 air box and have the paper element currently. What is a good aftermarket upgrade that flows better and is washable? What is everyone using or what do you recommend?

2021 mustang gt premium Is there any way to make the wheel extend further back? I would like another 1" but 2 would be perfect. Is this possible?

Hello all, When I floor my car for 8 to 10 seconds down the road, my cabin gets a strong exhaust smell that lasts for a few minutes. Windows up is worse. What is going on? How is this happening and what can I do?

I was hearing a vibration at highway speeds and when I felt under the rear fender the liner bolts were almost falling out. I put them back in hand tight but what's up with that? Both sides were loose. Do I use red lock locktite on them or what?

2021 GT Premium w/ GT PP. Do the GT performance packs have different alignment settings than standard GTs? Mine seems way more twitchy and wants to dart left/right with the slightest movement of the wheel. What are the alignment specs supposed to be for my car?

Question: I have a premium 2021 and the rear speakers are barely making any sound compared to the fronts. Can someone please check theirs? I put the fader all the way to the rear and all the volume goes away. Can hear the music still but it's about 10% as loud and seriously muffled. Please let...

My front USB doesn't charge well at all. I drive for an hour and my phone goes up 1%. The USB in the center console charges way better. Anything I should look at? Or tell the dealer what?

At highway speeds and cruising normal, when I roll onto the throttle there is a noticeable hesitation and vibration like the engine is misfiring. It clears out once it downshifts. Happens around 2k rpm. No codes but it does this every time I drive it. Took it to the dealership and they say it's...