Steeda Subframe Brace 0-60 Improvement

[mikengail]

Thanks for the input Mike. I’m not drag racing and I’m not experiencing much wheel hop. It just seems like the 275 PS4’s don’t hook up well at all.
Maybe I’ll just get wider tires eventually.
Just never had this issue before the Flex tune.

Yeah, my daily rear wheels are 10" wide with 305/35R19 summer tires and I have an additional 10" wide set with the same size drag radials. No stopping the daily summer tires from spinning even at part throttle, but the drag radials stick like glue on a prepared track, after warming them up in the burnout box with lowered tire pressure.

It doesn't take much for Gen3 Coyote Mustangs to really wake up. Before the supercharger, I had only long tube headers burning E70 (listed as E85, but usually tested around 70 to 75...) and she would get crazy way too easily. I knew I would need to modify and beef up the rear when I went forced induction. Good luck...

P.S.
Not MUCH wheel hop is a bad situation. No wheel hop, none, or look to replace some half shafts...

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[JoeSpeed]

I'd get them, doesn't hurt to have, and it'll cut down on the hop, which should improve 0-60.

 

[ChitownStang]

Yeah, my daily rear wheels are 10" wide with 305/35R19 summer tires and I have an additional 10" wide set with the same size drag radials. No stopping the daily summer tires from spinning even at part throttle, but the drag radials stick like glue on a prepared track, after warming them up in the burnout box with lowered tire pressure.

It doesn't take much for Gen3 Coyote Mustangs to really wake up. Before the supercharger, I had only long tube headers burning E70 (listed as E85, but usually tested around 70 to 75...) and she would get crazy way too easily. I knew I would need to modify and beef up the rear when I went forced induction. Good luck...

P.S.
Not MUCH wheel hop is a bad situation. No wheel hop, none, or look to replace some half shafts...

Yeah, E70 is what I consistently get at my local station. It pulls like a raped ape now when it does hook! lol
I couldn't imagine having a supercharger, I'd be in jail or dead the way I drive!

 

[ChitownStang]

I'd get them, doesn't hurt to have, and it'll cut down on the hop, which should improve 0-60.

I just don't like adding weight if there is no point for the part. If it helps a little then I'm fine buying it. I did the whole Steeda suspension and cradle alignment, all that stuff on my premium 15gt and although it transformed the car, it did increase NVH which is why I went with the Mach 1 this time around so it was all stock now with the magnaride option for stiffer suspension if needed.

 

[SheepDog]

What 0-60 MPH improvement should I expect from the installation of Steeda rear subframe brace?

I searched this forum, but couldn't find the answer. Everyone loves the improved chassis feel, but I'm curious about numbers.

I'm going to buy them soon.

https://www.steeda.com/steeda-s550-mustang-rear-irs-subframe-brace-2015-coupe-555-5754.html

0.0 MPH. 0-60 will always be 0-60 regardless of how long it takes to get there.

 

[JoeSpeed]

I just don't like adding weight if there is no point for the part. If it helps a little then I'm fine buying it. I did the whole Steeda suspension and cradle alignment, all that stuff on my premium 15gt and although it transformed the car, it did increase NVH which is why I went with the Mach 1 this time around so it was all stock now with the magnaride option for stiffer suspension if needed.

How much weight is it though? Its not like your adding sandbags, and it’s beneficial for traction

 

[2021 Mach 1]

Hi there - Tim pinged me in to share some personal experience with the Mach 1 and adding our Steeda IRS Subframe Support Braces. In my opinion, they offer the same benefit as they would on an EcoBoost or GT. They add additional support triangulating the load on the rear subframe with the rest of the chassis. Yes, the Mach 1 does have some unique bushings and other small changes over the standard GT, but the benefits of adding the braces are well worth the upgrade on the Mach 1.

Check out this video of some suspension testing we did on the Mach 1. Hope this helps!

Good video, thanks. Interesting you kept the vertical links stock

 

[WERA49]

0.0 MPH. 0-60 will always be 0-60 regardless of how long it takes to get there.

One of us has misinterpreted something. Maybe you're joking and it's not apparent.

 

[SheepDog]

One of us has misinterpreted something. Maybe you're joking and it's not apparent.

I was joking. The way you wrote your question made it seem like you were asking how to improve your MPH in a 0-60 run.

The question should be - "Will a Steeda Subframe brace improve my 0-60 time"

 

[Cory S]

I was joking. The way you wrote your question made it seem like you were asking how to improve your MPH in a 0-60 run.

The question should be - "Will a Steeda Subframe brace improve my 0-60 time"

No subframe braces or lock outs here. Just proper straight line camber adjustment, Steeda subframe centering dowels and Steedas piggy back differential mounting bushings.
0-60 in 1.9 seconds when fully hooked up. ( 1.31 60’).

 

[SheepDog]

No subframe braces or lock outs here. Just proper straight line camber adjustment, Steeda subframe centering dowels and Steedas piggy back differential mounting bushings.
0-60 in 1.9 seconds when fully hooked up. ( 1.31 60’).

Impressive. Mostly I love seeing cars that can shit on a Tesla. I think I will get the Differential add-on bushings as well.

 

[ChitownStang]

The Steeda IRS Chassis Braces are hands down our most popular & most successful product for the S550. If these weren't as good as advertised ... you would see much more feedback on the forum ... but that's not the case.

Here are some of the benefits of the Steeda braces:

1. Improved Stability: The IRS Chassis Braces help reduce chassis flex and torsion, resulting in improved stability during aggressive cornering and high-speed maneuvers. By minimizing unwanted suspension movement, the braces enhance the overall rigidity of the rear suspension system.
2. Enhanced Handling: The increased chassis rigidity provided by the braces helps to maintain better tire contact with the road surface, resulting in improved traction and more precise handling. This is particularly beneficial when pushing the limits of the vehicle's performance on track days or spirited driving. This will also help in your 0-60 times.
3. Reduced Wheel Hop: Wheel hop is a common issue in high-performance vehicles with independent rear suspension. It occurs when the rear tires momentarily lose traction under hard acceleration, causing a hopping or skipping motion. The IRS Chassis Braces help to mitigate wheel hop by reducing flex in the suspension, resulting in improved traction and a smoother launch.
4. Easy Installation: The Steeda IRS Chassis Braces are designed as bolt-on components, which means they can be installed without major modifications or welding. This makes them a convenient upgrade for enthusiasts who want to enhance their vehicle's performance and handling without extensive modifications - without requiring an alignment.

Check out our site here for a full list of reviews on the subject:

https://www.steeda.com/steeda-s550-mustang-rear-irs-subframe-brace-2015-coupe-555-5754.html

TJ, do you have a discount code I can use for the subframe braces?

 

[ChitownStang]

Did you do everything else first? The braces are icing. Pointless without the rest of the cake. Unless you're the kind that just eats canned icing out of the can with a spoon.

Matt, you really think the Subframe braces are pointless without doing the bushing and alignment kit on the Mach 1?
I don't want to do all of that work on this car as I don't think i need it. Hiring mechanic, then doing alignment.
The braces are something I can easily do in my garage and I know they won't add any NVH as well.

 

[shogun32]

Matt, you really think the Subframe braces are pointless without doing the bushing and alignment kit on the Mach 1?

that's my opinion obviously. The subframe can deflect up/down, back and forth and twist in it's stock state. the Steeda braces are rather spindly and while they no doubt help, they only really control the back/forth direction and not the other 2 axis.

Now if you got the 762 bracing kit from BMR that's some serious hardware but there too bushing lockouts are integral to the solution.

All the mods are additive so if you want to take Steeda up on their Memorial Day discounts and score the braces and just do that, there's no harm in trying and seeing if you like the results enough to just let the rest go.

Me, I tend to be more of a "let's fix the whole damn problem" kind of guy. I would at least partially drop the subframe and put in the alignment dowels and Whiteline isolators and buttress with the brace.

 

[ChitownStang]

that's my opinion obviously. The subframe can deflect up/down, back and forth and twist in it's stock state. the Steeda braces are rather spindly and while they no doubt help, they only really control the back/forth direction and not the other 2 axis.

Now if you got the 762 bracing kit from BMR that's some serious hardware but there too bushing lockouts are integral to the solution.

All the mods are additive so if you want to take Steeda up on their Memorial Day discounts and score the braces and just do that, there's no harm in trying and seeing if you like the results enough to just let the rest go.

Me, I tend to be more of a "let's fix the whole damn problem" kind of guy. I would at least partially drop the subframe and put in the alignment dowels and Whiteline isolators and buttress with the brace.

Ok, thanks for the advice Matt.

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