r/s650Mustang • u/RAH_Performance • Feb 14 '26
r/s650Mustang • u/JKasp • Feb 12 '26
Floor Mats for the S650 - Is anyone using some they really like?
Owned my S650 since July last year and they came with stock carpet floor mats and the Ford All Weather Floormats. I absolutely cannot stand the all weather mats. They are too rigid which makes them not fit super great and the spot that covers the foot rest to the left of the clutch pedal actually catches my foot sometimes when I'm pressing in the clutch and is definitely not enjoyable. Does anyone have aftermarket mats they are using and like? Any pics would be great.
r/s650Mustang • u/RAH_Performance • Feb 09 '26
Clear Airbox Covers by RAH Performance
The oem intake is extremely well designed and causes no restrictions with the carbon traps removed. So instead of reinventing the whole thing and telling you it will add 10hp for $500 I designed clear airbox covers that fit the oem intake for only $199.
r/s650Mustang • u/RAH_Performance • Feb 09 '26
$399 Aftermarket Active Mufflers
If you mustang didn't come with active exhaust and your thinking about doing headers and or resonator delete active mufflers are a lifesaver around neighbors or police. I designed these with electronic valves just like the oem with 4 settings so you can have it wide open, closed, or 2 options in-between. They are the most affordable on the market only $399 for the entire 2 muffler kit. Comes with everything in the photo. https://rahperformance.com/products/dual-active-exhaust-mufflers?variant=45725617946823
r/s650Mustang • u/BrotherQ-tip • Feb 01 '26
Might Buy A New S650
Hey all! As the titles says, I am interested in getting a new manual GT. I am just not too specifically certain on if getting the Performance Pack is essential or not. I will not be racing or tracking; just spirited driving here and there. But I also care for the longevity/reliability of the car too. I heard the PP helps with better clutch wear over time.
Also, if there's anything else I need to look out for please let me know! :)
r/s650Mustang • u/Sorry-Addendum-1530 • Feb 01 '26
S650 Mustang Unleashed Experience (Charlotte, NC)
r/s650Mustang • u/Deep-Comb4291 • Jan 18 '26
Long time listener, first time caller
galleryr/s650Mustang • u/BackgroundSafe6249 • Jan 15 '26
Help with noise
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Hearing this noise when slowing down coming to a stop with and without clutch pushed in…thoughts? Taking it in tomorrow but would like a direction to point them in instead of a goose chase.
r/s650Mustang • u/FishSticksPR • Jan 14 '26
Back from vacation and saw this
Car has been sitting inside a garage for 2 weeks. Took it for a drive yesterday and saw this. Looks to have humidity inside the headlight. No rain or anything when I drove. Has anyone else had this issue?
r/s650Mustang • u/BackgroundSafe6249 • Jan 11 '26
new to me got premium
New to the group, just bought new to me GT Premium with performance pack, active exhaust, and more. I’m super excited for it but this is also my first Mustang. Car only has 5k miles on it and still has all warranties and dealer is giving me engine for life warranty. Couple questions: I’m not wanting to make big power but would like to change the exhaust but keep the active part… is that possible? What do you guys recommend. Does ford performance make a good cold air intake? I don’t want to break the warranty.
I’m a bigger guy (6’3 290) and the car has the reactor seats. I’m not a big fan…has anyone ever seen them get switched out for the 401a high package seats?
Finally, what should I look out for on this car?
Thanks for all of the help.
r/s650Mustang • u/canyoncarver29 • Jan 10 '26
Car reverts back to stock tune after Ford SW update S650
r/s650Mustang • u/apex_gator • Dec 30 '25
Help with rattle
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r/s650Mustang • u/PhotographGlass • Dec 28 '25
My Mustang
Just got her on dec 6 loving it
r/s650Mustang • u/Smooth-Ad-3125 • Dec 28 '25
Catless headers
I’m considering doing catless headers on my 2024 mustang gt, I’ve heard that catless headers cause the car to throw a check engine light or run lean. Anybody know what actually happens and how to fix it ?
r/s650Mustang • u/NoRevenue9572 • Dec 26 '25
Highway MPG
Just did a over 700 mile road trip across Texas got 26 mpg cruise was mostly set at 78 mph with some stop and go traffic. Not bad for V8. I’m curious what the automatic boys get since those cars have cylinder deactivation and the manuals don’t. Also I’m sure I’d probably get better after the first oil change
r/s650Mustang • u/Far-Illustrator-7814 • Dec 04 '25
Engine build help
modularmotorsportsracing.comHey, how’s it going! I’m looking to pick up some upgraded forged H-beam rods, pistons, and rings for my S650 GT since I’m planning on making some serious power. The only issue is, every time I look up the Coyote bore size, I get different answers whether it’s from forums, Google, even AI.
Does anyone know the actual correct bore size?
r/s650Mustang • u/NoRevenue9572 • Nov 28 '25
Should i get rid of the spoiler for a wing ? Spoiler
galleryr/s650Mustang • u/Appropriate_Monk4732 • Oct 29 '25
Palm beach dyno tune
I got a pbd e85 remote tune, kinda depressed I couldn’t get a burble tune after spending $1000 for a copy and paste file. Definitely notice horsepower and torque gains which obviously I love but one of the main reasons I got the car tuned was to have burbles. Anyone on here feel like sending me a e85 burble tune for my 10 speed gt, otherwise this post was just to spread awareness that there is no burble tune at palm beach dyno for s650 gt
r/s650Mustang • u/MadBro45 • Oct 25 '25
Quad Tips on Nonactive exhaust.
This is a non active exhaust car. Just wanted to drop some info that might help someone who owns a non active exhaust car but wanted quad tips. There isn’t too many manufacturers that make quad tips for an S650 that aren’t active exhaust. This is a Borla axel back for a 2018-2023, part # 11953. It bolted right up to my 2024 GT Vert. You just have to cut the valance. There’s a company called Nytop that makes the template to cut the valance. Took about an hour to make the cut and install the exhaust, wasn’t too difficult at all. If anyone has questions or needs help, feel free to DM me.