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I really want to get a ECU tune for my 570S, but the car still has warranty till 2021. Is there any chance to get a tune, without avoiding the warranty? I thought of buying a second ECU and swapping it out, should there be any issues in the future... Anybody done this before or can get me any advice?
 

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I believe the ECU stores mileage so a discrepancy between ecu mileage and odometer mileage would be a red flag. Not 100% sure though.
 

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I really want to get a ECU tune for my 570S, but the car still has warranty till 2021. Is there any chance to get a tune, without avoiding the warranty? I thought of buying a second ECU and swapping it out, should there be any issues in the future... Anybody done this before or can get me any advice?
It'd be fraud. I wouldn't do it.

If you must, you should do so accepting that it invalidates part of the warranty. We ask that McLaren plays fair with us - it cuts both ways.
 

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It'd be fraud. I wouldn't do it.

If you must, you should do so accepting that it invalidates part of the warranty. We ask that McLaren plays fair with us - it cuts both ways.
While I totally agree with the spirit of what you said, the MC warranty does skirt the boundaries of the magnuson moss act with their random exclusions etc Not that this warrants having them pay for warranty work they shouldnt be paying for.
 

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A clone ECU is something that can be done. There are some coding changes that need to be made but we have made clones for both the 1793 (4.0L) and 1797 (3.8L) processors. Typically in modern cars the mileage is stored in the dash and pulled by the ECU. A small side of our business is ECU repair to bring to life dead ECUs that others may have bricked as well as providing clones to those who request them. The factory ECU is never modified and the clone ECU has a fully functional immobilizer.

Shoot us an email if you have any questions,

[email protected]
 

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It'd be fraud. I wouldn't do it.

If you must, you should do so accepting that it invalidates part of the warranty. We ask that McLaren plays fair with us - it cuts both ways.
I agree 100%. I don't care if its a McLaren or a Toyota. If you mess with the tune of an engine you should kiss your powertrain warranty goodbye and accept that willingly.
 

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I agree 100%.
I don't care if its a McLaren or a Toyota. If you mess with the tune of an engine you should kiss your powertrain warranty goodbye and accept that willingly.
And I disagree 99.99%. ZLYKOT reminds us of a very important Act in place to protect us from having any auto warranty automatically voided from any/all modifications. Or not following the manufacturers "rules".
There are plenty of examples out there that support an owners right to deviate from what we are made to believe be written in stone. A modification does not always void warranty, nor do aftermarket parts. Both of which can actually improve on OEM performance and longevity. Have an honest conversation with an intelligent automotive engineer sometime, it's eye opening. And nobody will ever convince me that any mechanic can change my air filters, oil, clutch, and transaxle fluids, or flush my brake lines with more luv and time than I give my vehicles.
If a modification, non-OEM part, service performed independently of the dealer, etc. can not be proven to the reason for failure, the warranty must be honored. Of course our legal system stopped "innocent until proven guilty" long ago, so collect and keep the paperwork....and CYA !
 

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And I disagree 99.99%.
Youre entitled to your opinion. I am and engineer who employees people, produces a product, and warrantees that product. If one of my customers monkeyed with my product and then asked me to warranty it... know what I would tell them? You can guess.

Do notice that I also said 'power train warranty'. I don't think they should refuse to work on your window actuator because you tuned your car. However a tune does have many downstream affects on other components due to the increased HP/TQ.
 

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And I disagree 99.99%. ZLYKOT reminds us of a very important Act in place to protect us from having any auto warranty automatically voided from any/all modifications. Or not following the manufacturers "rules".
There are plenty of examples out there that support an owners right to deviate from what we are made to believe be written in stone. A modification does not always void warranty, nor do aftermarket parts. Both of which can actually improve on OEM performance and longevity. Have an honest conversation with an intelligent automotive engineer sometime, it's eye opening. And nobody will ever convince me that any mechanic can change my air filters, oil, clutch, and transaxle fluids, or flush my brake lines with more luv and time than I give my vehicles.
If a warranty issue can not be proven to be the reason for failure, the warranty must be honored. Of course our legal system stopped "innocent until proven guilty" long ago, so collect and keep the paperwork....and CYA !
Ah the Magnuson Moss act. It wasn't designed with the modified car scene in mind, it was put in place so you can use non OEM parts such as oil filters, spark plugs, starter motors without the manufacturer voiding your warranty. The key is the part should perform the same way as the OEM part. Yet car modifiers believe it is a get out of jail free card where they can install components that are designed to perform differently to OEM (usually increase performance) and have the manufacturer pick up the pieces when it all goes wrong. Not ok in my book and not what the act had in mind.

The OP of this post is asking on an open Internet forum if he can install a second ECU to fool the manufacturer in case the modifications cause issues and he needs to make a warranty claim. Again, not ok in my book. Disagree all you want.
 

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ZLYKOT reminds us of a very important Act in place to protect us from having any auto warranty automatically voided from any/all modifications.
Are you both an Automotive Engineer and a lawyer? I do have degrees in Engineering Science, but am not a lawyer. However, my reading is that of @Blswan. As an Engineer, it is unreasonable to expect a system to be warranted if you replace components with ones that cause it to operate outside of its specified parameters. If you use aftermarket performance parts, then you either lose the warranty for that system, or the parts manufacturer would have to cover you.

You simply cannot expect any system to be designed to be reliable with unspecified, future modifications. Engineering is about making parts good enough for a given set of parameters, otherwise our cars would be a lot more expensive and heavier. Then there's the whole pollution issue, which is also (potentially) a legal one.
 

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Youre entitled to your opinion. I am and engineer who employees people, produces a product, and warrantees that product. If one of my customers monkeyed with my product and then asked me to warranty it... know what I would tell them? You can guess.

Do notice that I also said 'power train warranty'. I don't think they should refuse to work on your window actuator because you tuned your car. However a tune does have many downstream affects on other components due to the increased HP/TQ.
"Youre entitled to your opinion."
What a great phrase.
 
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