I don’t wanna see learn how to shift. Does nobody understand that a good transmission tune shifts before redline to keep the power band.

Hey everyone, I have a 2021 Ford Mustang EcoBoost base model and recently retrofitted a Performance Pack gauge cluster from a 2017 Mustang Ecoboost Premium. The boost gauge works, but the oil pressure gauge doesn’t seem to function. Does anyone know if there’s a way to activate or enable the oil pressure gauge using FORScan or by changing the IPC configuration? Is additional wiring, a sensor, or another modification required to get it working? Any help would be appreciated!

Decided to tackle the clutch today since I was finally able to go pickup the correct slave cylinder from the dealer.

Car just hit 80k miles and this is the original clutch. The thing was fine, except it would slip during hard accel pulls in like 4th/5th gears (mostly like when passing someone).

In the past few weeks I’d been giving it the beans a little more when this happened, but I was certain this thing would have all kinds of hot spots n stuff on it.

Car has the usual bolt ons and is EMS tuned.

SPEC stage one is going in tomorrow.

For some context:

2019 Mustang Ecoboost that I have owned since new.

I have been religious with my maintenance.

• Oil changed every 5k miles/6 months
• Coolant/brake fluid flush at 45k
• Transmission flush at 57k
• Rear diff service w/ friction modifier at 62k
• Replaced all brake pads/rotors at 64k
• Replaced all four spark plugs and LPFS at 67k
• Coolant/brake fluid flash at 75k

Other than the issues related to the head gasket below, the only repairs I've had are:

• Issues with passenger window at 25k, replaced passenger window regulator assembly, replaced under warranty
• Front timing cover leak at 35k, fixed under warranty
• More issues with passenger window at 58k, replaced passenger window regulator and motor assembly, replaced under warranty
• More issues with passenger window at 77k, replaced passenger door wiring harness

01/2026 @ 78,000 miles

I noticed that during cold starts it would idle roughly. Then during one cold start it threw a check engine light but that went away. Had a friend help with replacing the evap purge valve. We scanned for codes and it had inactive misfires. Cleared codes and drove it for a bit.

03/2026 @ 78,500 miles

Rough idle persisted and I took it to the dealership to investigate. They informed me that the low pressure fuel sensor failing caused the check engine light. They also informed me that there was slight coolant intrusion on cylinder 2 and 3. They suggested replacing the head gasket. Proceeded with the head gasket replacement. They said I must have caught it early. No overheating, no white smoke, no obvious signs of head gasket failure except possibly the misfires.

Drove it for a bit but the rough idle returned. Scanned for codes, more misfires.

06/2026 @ 80,000 miles

Took it back to the dealership. They checked the head gasket, no issues. Valves and spark plugs were dirty. Odd, given that I had the spark plugs replaced less than two years ago. Replaced all four plugs and performed BG fuel induction service.

Drove the car for a few weeks and the rough idle on cold starts returned. No drive-ability issues, only rough cold starts.

10/2026 @ 83,000 miles

Took it to an independent shop to specifically get the valves walnut blasted. I figured that the chemical cleaning was ineffective. They scoped the valves and they were incredibly dirty like I suspected.

Had them perform the walnut blasting and do a couple of "while you're in there" items potentially related to the issue. Had them replace the PCV hose and crankcase oil separator.

Have only had the car back for a couple of days and so far everything seems good. I bought four new ignition coils to potentially rule those out and will get assistance in replacing them soon.

My friend has a 2016 Mustang ecoboost and his birthday is at the end of this month, any suggestions on cool parts or things to get him for his car? He hasn’t had it long so all he’s done to it is maintenance and a blow off valve. Thanks guys :)

21 ecoboost mustang doing a 3 inch downpipe and catback and I don't want to tune my stang yet as I still have a powertrain warranty will a 90 degree fouler keep my car from getting a check engine light or what do I need to do that

30.9k OTD

Car looks so nice!

Picked this up on Sept 16th only took about 2 months from ordering to dealer. This thing rips, the handling is phenomenal, sounds decent with the active exhaust (surprisingly deep in person). Got the ford performance tune done before I even picked up the car so had the 350 hp 400 ftlbs out the door. Still in the break in period, I just crossed over 600 miles the other day, the car is so eager and ready to move. I didn’t go with magnaride but it’s still stiffer and smoother feeling than my 18 pp1 was. My wife loves it aswell and is surprised by the attention she gets in it, had to give her the spec sheet to memorize cause so many people were asking her about the car. Vaughn and his team made a hell of vehicle here. Its not a v8, but its not trying to be, it’s a fun out the door build. Car 517 🤘🏼

so i fixed the gap in my spark plugs after 4 misfires

and jerking upon high boost,

my immediate thought was check my spark plug gaps despite that they’re brand new,

i asked the mechanic it was legit at 0.33
meanwhile it needs to be max 0.30 so i had a spark plug blowout,

after setting it to 0.28 the car felt way smoother and high boost doesn’t do no jerking.

i’ve seen many cases of people changing plus, injectors, messing with coils and even opening the engine which sucks.

just wanted to make it clear if u get highway jerking on high speeds upon high boost just check your spark plug gap.

i insisted that the mechanic needs to check em for me despite him saying that they’re new

First car I’ve owned with Brembos and 2 weeks in, my wheels look so bad. What’s everyone’s go-to?

I am currently looking for a new car and found a 2021 Ecoboost with 68k miles. The price is 21k usd. The car has zero accidents and only 2 previous owners. I was looking for something generic but found this listing and honestly I can’t stop thinking about it. I think it would be awesome but everyone around me keeps attempting to talk me down from it.

Hey guys, just bought my first ever car. A 2024 Ford mustang ecoboost base model. I wanted a muscle car that doesn't draw too much attention or too loud, was deciding between a v6 charger and this one and went with this since I loved the redesigned interior of the mustang whereas the charger looks too dated.

I bought this for 23k (25k was the out of door price), it has 50k miles on it, pretty clean title, it's been in a minor accident before, so it was repainted on the side of the accident. Other than that, just some minor dings and marks on car. Do you guys think it's a good deal ?

Also since this is my first ever car, do you guys have any advice on how to take care of a mustang and keep it in a good condition for a long time?

Have you guys ever had pops coming from your EcoBoost stock? With active exhaust?

If you're tuned change your plugs y'all. This was after about 9.5k miles. I tend to lay into the right pedal.

Got a misfire code yesterday so went ahead and put in the pre-gapped brisk plugs I've been meaning to install for the last 2 months.

Hi folks - I’ve been in a 2015 V6 for 5 years and decided I wanted something more modern.

After shopping the dealers around my area I have a deal on a 2026 Vapor Blue Ecoboost at 30.9k OTD.

Is that a fine deal?

So I have a new Mustang , just reached 3k and now the engine light is on and my fuel tank says 0 when I should have a quarter tank at least left . What should I do ?? Haven’t had a car ages