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AZ18yote

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How desperate are you for your car to be 0.1 seconds faster in the 1/4 mile? That's about what a tune is worth - not very significant gains. IMO not worth it if you're concerned (as you should be on a new car) about the warranty. You can get nearly the same gains by putting in a $50 drop-in K&N air filter that won't void any warranty.

That said, I doubt Ford could deny you a claim on anything that would be unrelated to the tune.
If tuning for e though there would be a much more dramatic difference in performance. Just playing devils advocate.
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3star2nr

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Was thinking of a tune for my 2019 GT. Called American Muscle and was told to be careful because Ford is known to blacklist car for any warranty work if computer has been breached.

I would hate to have my convertible motor go bad and Ford not repair it. That would be big bucks for me.

Anyone have any stories to confirm this.
Then wait for the warranty to expire?
Or buy another PCM...

Warranty is there to protect you from, Ford's fuck ups not to bail you out when you mod your car and break it...
 

Chad11491

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Sounds like bs to me. American muscle is clueless in general and is like going up to a Walmart greeter and asking what the best tune for your car is.
 

Zinc03svt

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I would not bother tuning a manual 18 up unless it’s E85 quite honestly. You can run E30 on stock tune and pick up some timing. I know because I logged it. ;).
 

3star2nr

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Sounds like bs to me. American muscle is clueless in general and is like going up to a Walmart greeter and asking what the best tune for your car is.
They are being safe, because they dont want to be sued by entitled idiots who cant read their owners manuals...

your owners manual literally answers this exact question... It goes into great detail, explaining whats covered etc.

If you mod your Car or run, an aftermarket tune it voids your warranty. Literally written clear as day, and in everyones car. ... Yet people keep asking or trying to weasel around it...

When you mod It's a calculated risk. If you tune and blow your shit up you fix it... If Ned the Ford tech didnt gap your rings right and you installed a whipple without a compression test at 3k miles and now at 12k its smoking its now on you to fix it...

Once you mod you take on all the risks. If you cant handle that wait enjoy the warranty period then do whatever later.

You cant have it both ways. Why is this so hard for people to understand...
 
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Zinc03svt

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Some people get warranty engine work even though they tuned their cars. Yes, it is a reality... Lol.
 

brucelinc

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your owners manual literally answers this exact question... It goes into great detail, explaining whats covered etc.

If you mod your Car or run, an aftermarket tune it voids your warranty. Literally written clear as day, and in everyones car. ... Yet people keep asking or trying to weasel around it....
Please copy and paste the part from the warranty guide that says "an aftermarket tune voids your warranty."
 

MaskedRacerX

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If you mod your Car or run, an aftermarket tune it voids your warranty. Literally written clear as day, and in everyones car. ... Yet people keep asking or trying to weasel around it...

I think part of the problem is incorrect language is being used. A tune does not "void your warranty", because that implies the car is no longer viable for any warranty work, and that's just not the case.

What a tune can do, is prevent warranty work, specifically relating to an issue caused by - or that can be proven as a related failure due to the modification.

Example:

I'm running an E85 tune, my convertible top tears / malfunctions. Whether the tune can be identified or not, the point of failure is, without a legal doubt, not related to the modification I made to the car, hence, it would be fixed under warranty, and the car would continue to have a warranty - even if didn't cover the parts affected by the tune (i.e., the motor, maybe the driveline).
 

3star2nr

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Please copy and paste the part from the warranty guide that says "an aftermarket tune voids your warranty."
Since y'all cant read apparently...

Here's Page 12 -13 of your warranty
Read the first paragraph of page 13
Screenshot_2020-01-02-10-27-56.png
 

3star2nr

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I think part of the problem is incorrect language is being used. A tune does not "void your warranty", because that implies the car is no longer viable for any warranty work, and that's just not the case.

What a tune can do, is prevent warranty work, specifically relating to an issue caused by - or that can be proven as a related failure due to the modification.

Example:

I'm running an E85 tune, my convertible top tears / malfunctions. Whether the tune can be identified or not, the point of failure is, without a legal doubt, not related to the modification I made to the car, hence, it would be fixed under warranty, and the car would continue to have a warranty - even if didn't cover the parts affected by the tune (i.e., the motor, maybe the driveline).
Every subassy of your car has its own warranty.

Modifying the tune can void all or part of your powertrain warranty. Its up to the dealership to decline to,do work,or cover it...

So running a tune will not affect your convertible top being covered because the top is under a separate warranty.

A tune may not affect a maf sensor or radiator being replaced. But if you melt a piston due to detonation or snap a conrod or blow a trans reving to 8000rpms no your warranty isnt going to cover that...

If pauly the tech didnt set the backlash right in your diff. And you now have 800whp and blow up your diff ford may replace it or they can credibly decline to cover it because you now have mods on your car that affect the powertrain...

If you put an aluminum driveshaft in your shelby gt350 and the vibrations grenade your trans or spins ur bearings you get to fix it
 

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AZ18yote

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The fact that the doc listed cellular phones is great. :)
 

3star2nr

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The fact that the doc listed cellular phones is great. :)
I think it's language that carried over and applies to the truck guys who install CB radios etc. Or even cellphone chargers. If your charger shorts out and takes out your radio,that's not Ford's problem
 

brucelinc

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Since y'all cant read apparently...
Apparently YOU are the one who has trouble with reading comprehension. Making a blanket statement that a tune VOIDS your warranty is not accurate and is very misleading. You are correct that the owners manual is clear.....it does NOT say that a tune voids your warranty. The term "CAUSED BY" has meaning. Based on your post #25, it appears that you now agree.
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