Will aftermarket headers void warranty?

[Mr Hyde]

Headers were my 1st bolt on at maybe 2k miles…

put 1 or 2k miles on it and you’re good to go, I picked up close to 40rwhp according to my track slips fwiw…
Definitely noticeable HP up top and TQ down low.

Its on my mod list, just getting the daily gramps wagon buttoned up and back on the road. Its amazing what headers on the 4th gen does performance wise with the factory tune

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[MAT1955]

@Q6543 ..... respectfully, I question 40 whp due to just headers. The oem Ford exhausts have a very good and decently balanced design. Picking up 40 wheel horse power is a huge feat and I would have to see a dyno test to believe that.

 

[Q6543]

@Q6543 ..... respectfully, I question 40 whp due to just headers. The oem Ford exhausts have a very good and decently balanced design. Picking up 40 wheel horse power is a huge feat and I would have to see a dyno test to believe that.

Totally reasonable, I have never dynoed my car, the 40rwhp is an estimate from picking up over 4mph at the track in worse air…

Not sure how it would look on a dyno, as you’re not actually moving, but at the strip in the real world the gains averaged 40hp plus when you reverse all the math calculations

 

[TcarterGT2024]

12-18RWHP is practical.

 

[robvas]

American speed saw +29hp on an S550

 

[drive_55_not]

12-18RWHP is practical.

I'd hazard a guess it's <20rwhp and 30rwtq. LT's do wake up the low end a tad better than top end on these Coyotes.

I just had the Lethal/Kooks O/R black Friday Special LT's installed and picked it up yesterday afternoon, didn't dyno it and likely never will, time slips tell the real story.

However, the Butt dyno sez low end torque is much improved, And It felt like it got up to 110 quicker on a quick blast up the on ramp ...

Hopefully we'll have some clear 50degee days in January and I'll get some runs in at Darlington and see where it's at.



./

 

[roket]

whether or not you will run into trouble for having aftermarket parts depends on things like which technician gets your vehicle, their attitude towards aftermarket parts, how you treat the service advisor, and more stuff like that. it varies person to person, unless their management has a specific rule in place.

putting on headers will not automatically void your bumper to bumper, powertrain, or emissions warranties. however, any issues caused by the modification will be non-warrantable and you will have to pay for those.

to give some examples, if you have a cold air intake and your engine drops a valve, that will be 100% warranty as long as you are under 5 years or 60,000 miles.
if you modify or delete a blow off valve and your turbo fails due to compressor surge, that is non-warrantable, because your modification very likely led to failure.
somewhere in the middle is a grey area where the choice of warrantable or not is determined by the technician, advisor, and/or manager. Ford does not step in unless the dealer is being too charitable with warranty claims, because Ford has to pay for the technician's time and take a loss on the parts.

if you really, really want to, and you dont mind burning a bridge, if you put up enough of a fit about having to pay for something your fault, its possible but not guaranteed that they may just internal everything, but it may also lead to you being fired from being a customer. also beware that managers talk every now and then, and there have been instances where a customer has been fired from multiple dealers due to their attitude at one.

TL;DR: realistically, headers are minimal risk of warranty coverage being denied unless they directly caused the issue

 

[8915GT]

American speed saw +29hp on an S550

We are talking about the S650, the manifolds have been re-designed and this video does not apply here.

 

[robvas]

We are talking about the S650, the manifolds have been re-designed and this video does not apply here.

What changed? The ford part says it fits the 2024. The driver side might be slightly different as the bolt pattern is 5.2, but does that mean anything performance wise?

 

[SmokeShowJoe]

As stated by
Kitulu The Magnussen Moss Act may Apply here... But my better judgement is that BECAUSE the headers are before the Cats and the up and down stream o2 sensors that this in itself would violate Federal air pollution law based upon a modifications of a federal emission part under the EPA. Technically even if tune is added that is emission compliant the 9th district court ruled that if a manufacturers factory tune has a patent
on it. This action can and will violate factory warranty under a copy right infringement law. Magnussen Moss Act used be the king !! Now every manufacturers uses their legal teams to deny more and more warranty claim.

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