Feels like its dying between 1K-2K

[sigintel]

You didnt mention doing the crank relearn after flywheel change.
Crank relearn is required.
Lighter flywheel lags in compression, accelerates ahead on power stroke(cause its lighter).
The instantaneous peaks and troughs of torsional acceleration are higher w lughter flywheel and typically lighter flywheel motors are set to idle much higher. Think CBR600.
Lighter flywheel lags in position on compression and your low rpm timing is thus inadvertently advanced timing. You are basically firing early, hence the bucking.
You must do the crank relearn procedure. The ecu can compensate a certain amount, beyond that you have to raise rpm.
You are basically firing early on compression stroke.
Also check you plug gaps are all same and correct.

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[VinnAY]

Hello Everyone!

I have a 2016 mustang GT that is about to drive me insane.

If I am in 4-6th and down between 1K-2K RPM the damn thing SOMETIMES starts to lug and feel like it is missing horribly, it shakes the car forward and backwards.

This is especially bad at 1500 and 1750 RPM

I can't for the life of me figure it out and once it is above 2K the thing runs like a champ!

I do have a lightweight flywheel and dual clutch but this was an issue before then but not as severe.

Anyone have any ideas?

Kinda feels like a troll post

 

[DarkestHour]

Because I like money and reving costs money and increases wear? I dont mind getting on it but sitting at 3K in 5th while driving down the highway at 60 because if I shift to 6th it fucks itself isn't what I call a quality experience...

Shouldn't have bought all that dumb shit in your mod list then.

 

[Legionofone]

[MENTION=21494]wildcatgoal[/MENTION] - Yeah, I agree but you have to have it to use the mantic clutch, I had a similar shudder with the stock clutch but it was a tad lower in the RPM range, the flywheel moved it up and made it worse. If I could go back in time I would never have bought this clutch and would have gone with something more reasonable.

[MENTION=21617]mustang1[/MENTION] - same shit

[MENTION=19978]sigintel[/MENTION] - Did the relearn, helped a bit but not much. plugs and coils all seem good though. I am thinking it is an unmetered air leak or something due to it being only at low RPMs and it having almost no issue revving high.

[MENTION=21493]VinnAY[/MENTION] - Why? What part of that seems like a troll?

[MENTION=22710]DarkestHour[/MENTION] - Great reply, top quality, really helping the situation. How about I don't tell you what to spend money on and you do the same.

 

[sigintel]

Get some new gas from Chevron, shell, exon
The winter fuel blends should be switching over.

Try open your plug gaps 10 percent.
Maybe try 38 to 40.
What plugs?
What gap tool? feeler gauge?
Log your knock and CHT?

 

[mustang1]

[MENTION=21494]wildcatgoal[/MENTION] - Yeah, I agree but you have to have it to use the mantic clutch, I had a similar shudder with the stock clutch but it was a tad lower in the RPM range, the flywheel moved it up and made it worse

did you get Mantic with organic or cerametallic ?

 

[smoke_wagon_6g]

Because I like money and reving costs money and increases wear? I dont mind getting on it but sitting at 3K in 5th while driving down the highway at 60 because if I shift to 6th it fucks itself isn't what I call a quality experience...

Revving costs money? Dude if you were worried about a few pennies why did you go and void your warrany? That said, sounds like something is wrong so hit up the dealer, since you're lost. You're going to have to pay someone to fix it. Forum guesses are all over the place from plug gap to flywheel to driver error. Maybe the shop that put in your clutch can swap out your lightweight flywheel for the stock one and see if that helps. Good luck.

 

[wildcatgoal]

6th gear is a highway gear - it is terrible for any form of acceleration. That is the design.

 

[michail71]

Revving costs a little bit but then why get a Mustang GT? It's like having a beautiful girlfriend and never satisfying her.

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